mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
1157 lines
38 KiB
Ruby
1157 lines
38 KiB
Ruby
require_relative '../spec_helper'
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require_relative 'fixtures/defined'
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describe "The defined? keyword for literals" do
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it "returns 'self' for self" do
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ret = defined?(self)
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ret.should == "self"
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ret.frozen?.should == true
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end
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it "returns 'nil' for nil" do
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ret = defined?(nil)
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ret.should == "nil"
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ret.frozen?.should == true
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end
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it "returns 'true' for true" do
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ret = defined?(true)
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ret.should == "true"
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ret.frozen?.should == true
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end
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it "returns 'false' for false" do
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ret = defined?(false)
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ret.should == "false"
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ret.frozen?.should == true
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end
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describe "for a literal Array" do
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it "returns 'expression' if each element is defined" do
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ret = defined?([Object, Array])
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ret.should == "expression"
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ret.frozen?.should == true
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end
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it "returns nil if one element is not defined" do
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ret = defined?([NonExistentConstant, Array])
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ret.should == nil
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end
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it "returns nil if all elements are not defined" do
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ret = defined?([NonExistentConstant, AnotherNonExistentConstant])
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ret.should == nil
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end
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end
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end
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describe "The defined? keyword when called with a method name" do
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describe "without a receiver" do
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it "returns 'method' if the method is defined" do
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ret = defined?(puts)
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ret.should == "method"
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ret.frozen?.should == true
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end
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it "returns nil if the method is not defined" do
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defined?(defined_specs_undefined_method).should be_nil
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end
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it "returns 'method' if the method is defined and private" do
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obj = DefinedSpecs::Basic.new
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obj.private_method_defined.should == "method"
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end
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it "returns 'method' if the predicate method is defined and private" do
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obj = DefinedSpecs::Basic.new
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obj.private_predicate_defined.should == "method"
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end
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end
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describe "having a module as receiver" do
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it "returns 'method' if the method is defined" do
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defined?(Kernel.puts).should == "method"
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end
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it "returns nil if the method is private" do
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defined?(Object.print).should be_nil
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end
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it "returns nil if the method is protected" do
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defined?(DefinedSpecs::Basic.new.protected_method).should be_nil
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end
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it "returns nil if the method is not defined" do
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defined?(Kernel.defined_specs_undefined_method).should be_nil
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end
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it "returns nil if the class is not defined" do
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defined?(DefinedSpecsUndefined.puts).should be_nil
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end
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it "returns nil if the subclass is not defined" do
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defined?(DefinedSpecs::Undefined.puts).should be_nil
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end
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end
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describe "having a local variable as receiver" do
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it "returns 'method' if the method is defined" do
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obj = DefinedSpecs::Basic.new
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defined?(obj.a_defined_method).should == "method"
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end
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it "returns nil if the method is not defined" do
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obj = DefinedSpecs::Basic.new
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defined?(obj.an_undefined_method).should be_nil
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end
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it "returns nil if the variable does not exist" do
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defined?(nonexistent_local_variable.some_method).should be_nil
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end
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it "calls #respond_to_missing?" do
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obj = mock("respond_to_missing object")
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obj.should_receive(:respond_to_missing?).and_return(true)
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defined?(obj.something_undefined).should == "method"
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end
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end
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describe "having an instance variable as receiver" do
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it "returns 'method' if the method is defined" do
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@defined_specs_obj = DefinedSpecs::Basic.new
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defined?(@defined_specs_obj.a_defined_method).should == "method"
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end
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it "returns nil if the method is not defined" do
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@defined_specs_obj = DefinedSpecs::Basic.new
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defined?(@defined_specs_obj.an_undefined_method).should be_nil
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end
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it "returns nil if the variable does not exist" do
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defined?(@nonexistent_instance_variable.some_method).should be_nil
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end
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end
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describe "having a global variable as receiver" do
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it "returns 'method' if the method is defined" do
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$defined_specs_obj = DefinedSpecs::Basic.new
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defined?($defined_specs_obj.a_defined_method).should == "method"
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end
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it "returns nil if the method is not defined" do
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$defined_specs_obj = DefinedSpecs::Basic.new
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defined?($defined_specs_obj.an_undefined_method).should be_nil
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end
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it "returns nil if the variable does not exist" do
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defined?($nonexistent_global_variable.some_method).should be_nil
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end
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end
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describe "having a method call as a receiver" do
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it "returns nil if evaluating the receiver raises an exception" do
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defined?(DefinedSpecs.exception_method / 2).should be_nil
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ScratchPad.recorded.should == :defined_specs_exception
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end
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it "returns nil if the method is not defined on the object the receiver returns" do
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defined?(DefinedSpecs.side_effects / 2).should be_nil
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ScratchPad.recorded.should == :defined_specs_side_effects
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end
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it "returns 'method' if the method is defined on the object the receiver returns" do
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defined?(DefinedSpecs.fixnum_method / 2).should == "method"
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ScratchPad.recorded.should == :defined_specs_fixnum_method
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end
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end
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end
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describe "The defined? keyword for an expression" do
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before :each do
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ScratchPad.clear
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end
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it "returns 'assignment' for assigning a local variable" do
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ret = defined?(x = 2)
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ret.should == "assignment"
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ret.frozen?.should == true
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end
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it "returns 'assignment' for assigning an instance variable" do
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defined?(@defined_specs_x = 2).should == "assignment"
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end
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it "returns 'assignment' for assigning a global variable" do
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defined?($defined_specs_x = 2).should == "assignment"
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end
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it "returns 'assignment' for assigning a class variable" do
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defined?(@@defined_specs_x = 2).should == "assignment"
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end
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it "returns 'assignment' for assigning multiple variables" do
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defined?((a, b = 1, 2)).should == "assignment"
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end
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it "returns 'assignment' for an expression with '%='" do
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defined?(x %= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '/='" do
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defined?(x /= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '-='" do
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defined?(x -= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '+='" do
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defined?(x += 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '*='" do
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defined?(x *= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '|='" do
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defined?(x |= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '&='" do
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defined?(x &= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '^='" do
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defined?(x ^= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '~='" do
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defined?(x = 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '<<='" do
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defined?(x <<= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '>>='" do
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defined?(x >>= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '||='" do
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defined?(x ||= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '&&='" do
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defined?(x &&= 2).should == "assignment"
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end
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it "returns 'assignment' for an expression with '**='" do
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defined?(x **= 2).should == "assignment"
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end
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it "returns nil for an expression with == and an undefined method" do
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defined?(defined_specs_undefined_method == 2).should be_nil
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end
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it "returns nil for an expression with != and an undefined method" do
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defined?(defined_specs_undefined_method != 2).should be_nil
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end
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it "returns nil for an expression with !~ and an undefined method" do
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defined?(defined_specs_undefined_method !~ 2).should be_nil
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end
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it "returns 'method' for an expression with '=='" do
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x = 42
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defined?(x == 2).should == "method"
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end
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it "returns 'method' for an expression with '!='" do
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x = 42
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defined?(x != 2).should == "method"
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end
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it "returns 'method' for an expression with '!~'" do
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x = 42
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defined?(x !~ 2).should == "method"
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end
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describe "with logical connectives" do
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it "returns nil for an expression with '!' and an undefined method" do
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defined?(!defined_specs_undefined_method).should be_nil
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end
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it "returns nil for an expression with '!' and an unset class variable" do
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@result = eval("class singleton_class::A; defined?(!@@doesnt_exist) end", binding, __FILE__, __LINE__)
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@result.should be_nil
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end
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it "returns nil for an expression with 'not' and an undefined method" do
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defined?(not defined_specs_undefined_method).should be_nil
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end
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it "returns nil for an expression with 'not' and an unset class variable" do
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@result = eval("class singleton_class::A; defined?(not @@doesnt_exist) end", binding, __FILE__, __LINE__)
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@result.should be_nil
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end
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it "does not propagate an exception raised by a method in a 'not' expression" do
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defined?(not DefinedSpecs.exception_method).should be_nil
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ScratchPad.recorded.should == :defined_specs_exception
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end
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it "returns 'expression' for an expression with '&&/and' and an unset global variable" do
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defined?($defined_specs_undefined_global_variable && true).should == "expression"
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defined?(true && $defined_specs_undefined_global_variable).should == "expression"
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defined?($defined_specs_undefined_global_variable and true).should == "expression"
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end
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it "returns 'expression' for an expression with '&&/and' and an unset instance variable" do
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defined?(@defined_specs_undefined_instance_variable && true).should == "expression"
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defined?(true && @defined_specs_undefined_instance_variable).should == "expression"
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defined?(@defined_specs_undefined_instance_variable and true).should == "expression"
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end
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it "returns 'expression' for an expression '&&/and' regardless of its truth value" do
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defined?(true && false).should == "expression"
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defined?(true and false).should == "expression"
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end
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it "returns 'expression' for an expression with '||/or' and an unset global variable" do
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defined?($defined_specs_undefined_global_variable || true).should == "expression"
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defined?(true || $defined_specs_undefined_global_variable).should == "expression"
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defined?($defined_specs_undefined_global_variable or true).should == "expression"
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end
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it "returns 'expression' for an expression with '||/or' and an unset instance variable" do
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defined?(@defined_specs_undefined_instance_variable || true).should == "expression"
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defined?(true || @defined_specs_undefined_instance_variable).should == "expression"
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defined?(@defined_specs_undefined_instance_variable or true).should == "expression"
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end
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it "returns 'expression' for an expression '||/or' regardless of its truth value" do
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defined?(true || false).should == "expression"
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defined?(true or false).should == "expression"
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end
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it "returns nil for an expression with '!' and an unset global variable" do
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defined?(!$defined_specs_undefined_global_variable).should be_nil
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end
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it "returns nil for an expression with '!' and an unset instance variable" do
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defined?(!@defined_specs_undefined_instance_variable).should be_nil
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end
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it "returns 'method' for a 'not' expression with a method" do
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defined?(not DefinedSpecs.side_effects).should == "method"
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end
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it "calls a method in a 'not' expression and returns 'method'" do
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defined?(not DefinedSpecs.side_effects).should == "method"
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ScratchPad.recorded.should == :defined_specs_side_effects
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end
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it "returns nil for an expression with 'not' and an unset global variable" do
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defined?(not $defined_specs_undefined_global_variable).should be_nil
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end
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it "returns nil for an expression with 'not' and an unset instance variable" do
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defined?(not @defined_specs_undefined_instance_variable).should be_nil
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end
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it "returns 'expression' for an expression with '&&/and' and an undefined method" do
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defined?(defined_specs_undefined_method && true).should == "expression"
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defined?(defined_specs_undefined_method and true).should == "expression"
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end
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it "returns 'expression' for an expression with '&&/and' and an unset class variable" do
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defined?(@@defined_specs_undefined_class_variable && true).should == "expression"
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defined?(@@defined_specs_undefined_class_variable and true).should == "expression"
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end
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it "does not call a method in an '&&' expression and returns 'expression'" do
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defined?(DefinedSpecs.side_effects && true).should == "expression"
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ScratchPad.recorded.should be_nil
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end
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it "does not call a method in an 'and' expression and returns 'expression'" do
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defined?(DefinedSpecs.side_effects and true).should == "expression"
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ScratchPad.recorded.should be_nil
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end
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it "returns 'expression' for an expression with '||/or' and an undefined method" do
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defined?(defined_specs_undefined_method || true).should == "expression"
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defined?(defined_specs_undefined_method or true).should == "expression"
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end
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it "returns 'expression' for an expression with '||/or' and an unset class variable" do
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defined?(@@defined_specs_undefined_class_variable || true).should == "expression"
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defined?(@@defined_specs_undefined_class_variable or true).should == "expression"
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end
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it "does not call a method in an '||' expression and returns 'expression'" do
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defined?(DefinedSpecs.side_effects || true).should == "expression"
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ScratchPad.recorded.should be_nil
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end
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it "does not call a method in an 'or' expression and returns 'expression'" do
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defined?(DefinedSpecs.side_effects or true).should == "expression"
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ScratchPad.recorded.should be_nil
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end
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end
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it "returns 'expression' when passed a String" do
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defined?("garble gooble gable").should == "expression"
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end
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describe "with a dynamic String" do
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it "returns 'expression' when the String contains a literal" do
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defined?("garble #{42}").should == "expression"
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end
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it "returns 'expression' when the String contains a call to a defined method" do
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defined?("garble #{DefinedSpecs.side_effects}").should == "expression"
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end
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it "returns 'expression' when the String contains a call to an undefined method" do
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defined?("garble #{DefinedSpecs.undefined_method}").should == "expression"
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end
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it "does not call the method in the String" do
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defined?("garble #{DefinedSpecs.dynamic_string}").should == "expression"
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ScratchPad.recorded.should be_nil
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end
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end
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describe "with a dynamic Regexp" do
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it "returns 'expression' when the Regexp contains a literal" do
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defined?(/garble #{42}/).should == "expression"
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end
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it "returns 'expression' when the Regexp contains a call to a defined method" do
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defined?(/garble #{DefinedSpecs.side_effects}/).should == "expression"
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end
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it "returns 'expression' when the Regexp contains a call to an undefined method" do
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defined?(/garble #{DefinedSpecs.undefined_method}/).should == "expression"
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end
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it "does not call the method in the Regexp" do
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defined?(/garble #{DefinedSpecs.dynamic_string}/).should == "expression"
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ScratchPad.recorded.should be_nil
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end
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end
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it "returns 'expression' when passed a Fixnum literal" do
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defined?(42).should == "expression"
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end
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it "returns 'expression' when passed a Bignum literal" do
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defined?(0xdead_beef_deed_feed).should == "expression"
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end
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it "returns 'expression' when passed a Float literal" do
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defined?(1.5).should == "expression"
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end
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it "returns 'expression' when passed a Range literal" do
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defined?(0..2).should == "expression"
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end
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it "returns 'expression' when passed a Regexp literal" do
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defined?(/undefined/).should == "expression"
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end
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it "returns 'expression' when passed an Array literal" do
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defined?([1, 2]).should == "expression"
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end
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it "returns 'expression' when passed a Hash literal" do
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defined?({a: :b}).should == "expression"
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end
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it "returns 'expression' when passed a Symbol literal" do
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defined?(:defined_specs).should == "expression"
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end
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end
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describe "The defined? keyword for variables" do
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it "returns 'local-variable' when called with the name of a local variable" do
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ret = DefinedSpecs::Basic.new.local_variable_defined
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ret.should == "local-variable"
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ret.frozen?.should == true
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end
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it "returns 'local-variable' when called with the name of a local variable assigned to nil" do
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DefinedSpecs::Basic.new.local_variable_defined_nil.should == "local-variable"
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end
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it "returns nil for an instance variable that has not been read" do
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DefinedSpecs::Basic.new.instance_variable_undefined.should be_nil
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end
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it "returns nil for an instance variable that has been read but not assigned to" do
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DefinedSpecs::Basic.new.instance_variable_read.should be_nil
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end
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it "returns 'instance-variable' for an instance variable that has been assigned" do
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ret = DefinedSpecs::Basic.new.instance_variable_defined
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ret.should == "instance-variable"
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ret.frozen?.should == true
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end
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|
|
it "returns 'instance-variable' for an instance variable that has been assigned to nil" do
|
|
DefinedSpecs::Basic.new.instance_variable_defined_nil.should == "instance-variable"
|
|
end
|
|
|
|
it "returns nil for a global variable that has not been read" do
|
|
DefinedSpecs::Basic.new.global_variable_undefined.should be_nil
|
|
end
|
|
|
|
it "returns nil for a global variable that has been read but not assigned to" do
|
|
DefinedSpecs::Basic.new.global_variable_read.should be_nil
|
|
end
|
|
|
|
it "returns 'global-variable' for a global variable that has been assigned nil" do
|
|
ret = DefinedSpecs::Basic.new.global_variable_defined_as_nil
|
|
ret.should == "global-variable"
|
|
ret.frozen?.should == true
|
|
end
|
|
|
|
# MRI appears to special case defined? for $! and $~ in that it returns
|
|
# 'global-variable' even when they are not set (or they are always "set"
|
|
# but the value may be nil). In other words, 'defined?($~)' will return
|
|
# 'global-variable' even if no match has been done.
|
|
|
|
it "returns 'global-variable' for $!" do
|
|
defined?($!).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable for $~" do
|
|
defined?($~).should == "global-variable"
|
|
end
|
|
|
|
describe "when a String does not match a Regexp" do
|
|
before :each do
|
|
"mis-matched" =~ /z(z)z/
|
|
end
|
|
|
|
it "returns 'global-variable' for $~" do
|
|
defined?($~).should == "global-variable"
|
|
end
|
|
|
|
it "returns nil for $&" do
|
|
defined?($&).should be_nil
|
|
end
|
|
|
|
it "returns nil for $`" do
|
|
defined?($`).should be_nil
|
|
end
|
|
|
|
it "returns nil for $'" do
|
|
defined?($').should be_nil
|
|
end
|
|
|
|
it "returns nil for $+" do
|
|
defined?($+).should be_nil
|
|
end
|
|
|
|
it "returns nil for any last match global" do
|
|
defined?($1).should be_nil
|
|
defined?($4).should be_nil
|
|
defined?($7).should be_nil
|
|
defined?($10).should be_nil
|
|
defined?($200).should be_nil
|
|
end
|
|
end
|
|
|
|
describe "when a String matches a Regexp" do
|
|
before :each do
|
|
"mis-matched" =~ /s(-)m(.)/
|
|
end
|
|
|
|
it "returns 'global-variable' for $~" do
|
|
defined?($~).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $&" do
|
|
defined?($&).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $`" do
|
|
defined?($`).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $'" do
|
|
defined?($').should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $+" do
|
|
defined?($+).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for the capture references" do
|
|
defined?($1).should == "global-variable"
|
|
defined?($2).should == "global-variable"
|
|
end
|
|
|
|
it "returns nil for non-captures" do
|
|
defined?($4).should be_nil
|
|
defined?($7).should be_nil
|
|
defined?($10).should be_nil
|
|
defined?($200).should be_nil
|
|
end
|
|
end
|
|
|
|
describe "when a Regexp does not match a String" do
|
|
before :each do
|
|
/z(z)z/ =~ "mis-matched"
|
|
end
|
|
|
|
it "returns 'global-variable' for $~" do
|
|
defined?($~).should == "global-variable"
|
|
end
|
|
|
|
it "returns nil for $&" do
|
|
defined?($&).should be_nil
|
|
end
|
|
|
|
it "returns nil for $`" do
|
|
defined?($`).should be_nil
|
|
end
|
|
|
|
it "returns nil for $'" do
|
|
defined?($').should be_nil
|
|
end
|
|
|
|
it "returns nil for $+" do
|
|
defined?($+).should be_nil
|
|
end
|
|
|
|
it "returns nil for any last match global" do
|
|
defined?($1).should be_nil
|
|
defined?($4).should be_nil
|
|
defined?($7).should be_nil
|
|
defined?($10).should be_nil
|
|
defined?($200).should be_nil
|
|
end
|
|
end
|
|
|
|
describe "when a Regexp matches a String" do
|
|
before :each do
|
|
/s(-)m(.)/ =~ "mis-matched"
|
|
end
|
|
|
|
it "returns 'global-variable' for $~" do
|
|
defined?($~).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $&" do
|
|
defined?($&).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $`" do
|
|
defined?($`).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $'" do
|
|
defined?($').should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for $+" do
|
|
defined?($+).should == "global-variable"
|
|
end
|
|
|
|
it "returns 'global-variable' for the capture references" do
|
|
defined?($1).should == "global-variable"
|
|
defined?($2).should == "global-variable"
|
|
end
|
|
|
|
it "returns nil for non-captures" do
|
|
defined?($4).should be_nil
|
|
defined?($7).should be_nil
|
|
defined?($10).should be_nil
|
|
defined?($200).should be_nil
|
|
end
|
|
end
|
|
it "returns 'global-variable' for a global variable that has been assigned" do
|
|
DefinedSpecs::Basic.new.global_variable_defined.should == "global-variable"
|
|
end
|
|
|
|
it "returns nil for a class variable that has not been read" do
|
|
DefinedSpecs::Basic.new.class_variable_undefined.should be_nil
|
|
end
|
|
|
|
# There is no spec for a class variable that is read before being assigned
|
|
# to because setting up the code for this raises a NameError before you
|
|
# get to the defined? call so it really has nothing to do with 'defined?'.
|
|
|
|
it "returns 'class variable' when called with the name of a class variable" do
|
|
ret = DefinedSpecs::Basic.new.class_variable_defined
|
|
ret.should == "class variable"
|
|
ret.frozen?.should == true
|
|
end
|
|
|
|
it "returns 'local-variable' when called with the name of a block local" do
|
|
block = Proc.new { |xxx| defined?(xxx) }
|
|
block.call(1).should == "local-variable"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a simple constant" do
|
|
it "returns 'constant' when the constant is defined" do
|
|
ret = defined?(DefinedSpecs)
|
|
ret.should == "constant"
|
|
ret.frozen?.should == true
|
|
end
|
|
|
|
it "returns nil when the constant is not defined" do
|
|
defined?(DefinedSpecsUndefined).should be_nil
|
|
end
|
|
|
|
it "does not call Object.const_missing if the constant is not defined" do
|
|
Object.should_not_receive(:const_missing)
|
|
defined?(DefinedSpecsUndefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' for an included module" do
|
|
DefinedSpecs::Child.module_defined.should == "constant"
|
|
end
|
|
|
|
it "returns 'constant' for a constant defined in an included module" do
|
|
DefinedSpecs::Child.module_constant_defined.should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a top-level constant" do
|
|
it "returns 'constant' when passed the name of a top-level constant" do
|
|
defined?(::DefinedSpecs).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the constant is not defined" do
|
|
defined?(::DefinedSpecsUndefined).should be_nil
|
|
end
|
|
|
|
it "does not call Object.const_missing if the constant is not defined" do
|
|
Object.should_not_receive(:const_missing)
|
|
defined?(::DefinedSpecsUndefined).should be_nil
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a scoped constant" do
|
|
it "returns 'constant' when the scoped constant is defined" do
|
|
defined?(DefinedSpecs::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns nil when the scoped constant is not defined" do
|
|
defined?(DefinedSpecs::Undefined).should be_nil
|
|
end
|
|
|
|
it "does not call .const_missing if the constant is not defined" do
|
|
DefinedSpecs.should_not_receive(:const_missing)
|
|
defined?(DefinedSpecs::UnknownChild).should be_nil
|
|
end
|
|
|
|
it "returns nil when an undefined constant is scoped to a defined constant" do
|
|
defined?(DefinedSpecs::Child::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil when a constant is scoped to an undefined constant" do
|
|
Object.should_not_receive(:const_missing)
|
|
defined?(Undefined::Object).should be_nil
|
|
end
|
|
|
|
it "returns nil when the undefined constant is scoped to an undefined constant" do
|
|
defined?(DefinedSpecs::Undefined::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil when a constant is defined on top-level but not on the module" do
|
|
defined?(DefinedSpecs::String).should be_nil
|
|
end
|
|
|
|
it "returns nil when a constant is defined on top-level but not on the class" do
|
|
defined?(DefinedSpecs::Basic::String).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the scoped-scoped constant is defined" do
|
|
defined?(DefinedSpecs::Child::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a top-level scoped constant" do
|
|
it "returns 'constant' when the scoped constant is defined" do
|
|
defined?(::DefinedSpecs::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns nil when the scoped constant is not defined" do
|
|
defined?(::DefinedSpecs::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil when an undefined constant is scoped to a defined constant" do
|
|
defined?(::DefinedSpecs::Child::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil when the undefined constant is scoped to an undefined constant" do
|
|
defined?(::DefinedSpecs::Undefined::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the scoped-scoped constant is defined" do
|
|
defined?(::DefinedSpecs::Child::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a self-send method call scoped constant" do
|
|
it "returns nil if the constant is not defined in the scope of the method's value" do
|
|
defined?(defined_specs_method::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the method's value" do
|
|
defined?(defined_specs_method::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the last constant is not defined in the scope chain" do
|
|
defined?(defined_specs_method::Basic::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil if the middle constant is not defined in the scope chain" do
|
|
defined?(defined_specs_method::Undefined::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if all the constants in the scope chain are defined" do
|
|
defined?(defined_specs_method::Basic::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a receiver method call scoped constant" do
|
|
it "returns nil if the constant is not defined in the scope of the method's value" do
|
|
defined?(defined_specs_receiver.defined_method::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the method's value" do
|
|
defined?(defined_specs_receiver.defined_method::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the last constant is not defined in the scope chain" do
|
|
defined?(defined_specs_receiver.defined_method::Basic::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil if the middle constant is not defined in the scope chain" do
|
|
defined?(defined_specs_receiver.defined_method::Undefined::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if all the constants in the scope chain are defined" do
|
|
defined?(defined_specs_receiver.defined_method::Basic::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a module method call scoped constant" do
|
|
it "returns nil if the constant is not defined in the scope of the method's value" do
|
|
defined?(DefinedSpecs.defined_method::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant scoped by the method's value is defined" do
|
|
defined?(DefinedSpecs.defined_method::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the last constant in the scope chain is not defined" do
|
|
defined?(DefinedSpecs.defined_method::Basic::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns nil if the middle constant in the scope chain is not defined" do
|
|
defined?(DefinedSpecs.defined_method::Undefined::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if all the constants in the scope chain are defined" do
|
|
defined?(DefinedSpecs.defined_method::Basic::A).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the outer scope constant in the receiver is not defined" do
|
|
defined?(Undefined::DefinedSpecs.defined_method::Basic).should be_nil
|
|
end
|
|
|
|
it "returns nil if the scoped constant in the receiver is not defined" do
|
|
defined?(DefinedSpecs::Undefined.defined_method::Basic).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if all the constants in the receiver are defined" do
|
|
defined?(Object::DefinedSpecs.defined_method::Basic).should == "constant"
|
|
end
|
|
|
|
it "returns 'constant' if all the constants in the receiver and scope chain are defined" do
|
|
defined?(Object::DefinedSpecs.defined_method::Basic::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a variable scoped constant" do
|
|
after :all do
|
|
if Object.class_variable_defined? :@@defined_specs_obj
|
|
Object.__send__(:remove_class_variable, :@@defined_specs_obj)
|
|
end
|
|
end
|
|
|
|
it "returns nil if the instance scoped constant is not defined" do
|
|
@defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(@defined_specs_obj::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the instance variable" do
|
|
@defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(@defined_specs_obj::A).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the global scoped constant is not defined" do
|
|
$defined_specs_obj = DefinedSpecs::Basic
|
|
defined?($defined_specs_obj::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the global variable" do
|
|
$defined_specs_obj = DefinedSpecs::Basic
|
|
defined?($defined_specs_obj::A).should == "constant"
|
|
end
|
|
|
|
it "returns nil if the class scoped constant is not defined" do
|
|
eval(<<-END, binding, __FILE__, __LINE__)
|
|
class singleton_class::A
|
|
@@defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(@@defined_specs_obj::Undefined).should be_nil
|
|
end
|
|
END
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the class variable" do
|
|
eval(<<-END, binding, __FILE__, __LINE__)
|
|
class singleton_class::A
|
|
@@defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(@@defined_specs_obj::A).should == "constant"
|
|
end
|
|
END
|
|
end
|
|
|
|
it "returns nil if the local scoped constant is not defined" do
|
|
defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(defined_specs_obj::Undefined).should be_nil
|
|
end
|
|
|
|
it "returns 'constant' if the constant is defined in the scope of the local variable" do
|
|
defined_specs_obj = DefinedSpecs::Basic
|
|
defined?(defined_specs_obj::A).should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for a self:: scoped constant" do
|
|
it "returns 'constant' for a constant explicitly scoped to self:: when set" do
|
|
defined?(DefinedSpecs::SelfScoped).should == "constant"
|
|
end
|
|
|
|
it "returns 'constant' for a constant explicitly scoped to self:: in subclass's metaclass" do
|
|
DefinedSpecs::Child.parent_constant_defined.should == "constant"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for yield" do
|
|
it "returns nil if no block is passed to a method not taking a block parameter" do
|
|
DefinedSpecs::Basic.new.no_yield_block.should be_nil
|
|
end
|
|
|
|
it "returns nil if no block is passed to a method taking a block parameter" do
|
|
DefinedSpecs::Basic.new.no_yield_block_parameter.should be_nil
|
|
end
|
|
|
|
it "returns 'yield' if a block is passed to a method not taking a block parameter" do
|
|
ret = DefinedSpecs::Basic.new.yield_block
|
|
ret.should == "yield"
|
|
ret.frozen?.should == true
|
|
end
|
|
|
|
it "returns 'yield' if a block is passed to a method taking a block parameter" do
|
|
DefinedSpecs::Basic.new.yield_block_parameter.should == "yield"
|
|
end
|
|
|
|
it "returns 'yield' when called within a block" do
|
|
def yielder
|
|
yield
|
|
end
|
|
|
|
def call_defined
|
|
yielder { defined?(yield) }
|
|
end
|
|
|
|
call_defined() { }.should == "yield"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for super" do
|
|
it "returns nil when a superclass undef's the method" do
|
|
DefinedSpecs::ClassWithoutMethod.new.test.should be_nil
|
|
end
|
|
|
|
describe "for a method taking no arguments" do
|
|
it "returns nil when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_method_no_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a block when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_method_block_no_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a #define_method when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_define_method_no_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a block in a #define_method when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_define_method_block_no_args.should be_nil
|
|
end
|
|
|
|
it "returns 'super' when a superclass method exists" do
|
|
ret = DefinedSpecs::Super.new.method_no_args
|
|
ret.should == "super"
|
|
ret.frozen?.should == true
|
|
end
|
|
|
|
it "returns 'super' from a block when a superclass method exists" do
|
|
DefinedSpecs::Super.new.method_block_no_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' from a #define_method when a superclass method exists" do
|
|
DefinedSpecs::Super.new.define_method_no_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' from a block in a #define_method when a superclass method exists" do
|
|
DefinedSpecs::Super.new.define_method_block_no_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' when the method exists in a supermodule" do
|
|
DefinedSpecs::SuperWithIntermediateModules.new.method_no_args.should == "super"
|
|
end
|
|
end
|
|
|
|
describe "for a method taking arguments" do
|
|
it "returns nil when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_method_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a block when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_method_block_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a #define_method when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_define_method_args.should be_nil
|
|
end
|
|
|
|
it "returns nil from a block in a #define_method when no superclass method exists" do
|
|
DefinedSpecs::Super.new.no_super_define_method_block_args.should be_nil
|
|
end
|
|
|
|
it "returns 'super' when a superclass method exists" do
|
|
DefinedSpecs::Super.new.method_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' from a block when a superclass method exists" do
|
|
DefinedSpecs::Super.new.method_block_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' from a #define_method when a superclass method exists" do
|
|
DefinedSpecs::Super.new.define_method_args.should == "super"
|
|
end
|
|
|
|
it "returns 'super' from a block in a #define_method when a superclass method exists" do
|
|
DefinedSpecs::Super.new.define_method_block_args.should == "super"
|
|
end
|
|
end
|
|
|
|
describe "within an included module's method" do
|
|
it "returns 'super' when a superclass method exists in the including hierarchy" do
|
|
DefinedSpecs::Child.new.defined_super.should == "super"
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
describe "The defined? keyword for instance variables" do
|
|
it "returns 'instance-variable' if assigned" do
|
|
@assigned_ivar = "some value"
|
|
defined?(@assigned_ivar).should == "instance-variable"
|
|
end
|
|
|
|
it "returns nil if not assigned" do
|
|
defined?(@unassigned_ivar).should be_nil
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for pseudo-variables" do
|
|
it "returns 'expression' for __FILE__" do
|
|
defined?(__FILE__).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for __LINE__" do
|
|
defined?(__LINE__).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for __ENCODING__" do
|
|
defined?(__ENCODING__).should == "expression"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for conditional expressions" do
|
|
it "returns 'expression' for an 'if' conditional" do
|
|
defined?(if x then 'x' else '' end).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for an 'unless' conditional" do
|
|
defined?(unless x then '' else 'x' end).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for ternary expressions" do
|
|
defined?(x ? 'x' : '').should == "expression"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for case expressions" do
|
|
it "returns 'expression'" do
|
|
defined?(case x; when 'x'; 'y' end).should == "expression"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for loop expressions" do
|
|
it "returns 'expression' for a 'for' expression" do
|
|
defined?(for n in 1..3 do true end).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for a 'while' expression" do
|
|
defined?(while x do y end).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for an 'until' expression" do
|
|
defined?(until x do y end).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for a 'break' expression" do
|
|
defined?(break).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for a 'next' expression" do
|
|
defined?(next).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for a 'redo' expression" do
|
|
defined?(redo).should == "expression"
|
|
end
|
|
|
|
it "returns 'expression' for a 'retry' expression" do
|
|
defined?(retry).should == "expression"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for return expressions" do
|
|
it "returns 'expression'" do
|
|
defined?(return).should == "expression"
|
|
end
|
|
end
|
|
|
|
describe "The defined? keyword for exception expressions" do
|
|
it "returns 'expression'" do
|
|
defined?(begin 1 end).should == "expression"
|
|
end
|
|
end
|