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9d0866c7d7
* Always the same frozen String for a given Module or Class.
* Avoids extra allocations whenever calling Module#name.
* See [Feature #16150]
128 lines
3.6 KiB
Ruby
128 lines
3.6 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/module'
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describe "Module#name" do
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it "is nil for an anonymous module" do
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Module.new.name.should be_nil
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end
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it "is nil when assigned to a constant in an anonymous module" do
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m = Module.new
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m::N = Module.new
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m::N.name.should be_nil
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end
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it "is not nil for a nested module created with the module keyword" do
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m = Module.new
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module m::N; end
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m::N.name.should =~ /\A#<Module:0x[0-9a-f]+>::N\z/
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end
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it "changes when the module is reachable through a constant path" do
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m = Module.new
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module m::N; end
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m::N.name.should =~ /\A#<Module:0x\h+>::N\z/
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ModuleSpecs::Anonymous::WasAnnon = m::N
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m::N.name.should == "ModuleSpecs::Anonymous::WasAnnon"
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end
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it "is set after it is removed from a constant" do
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module ModuleSpecs
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module ModuleToRemove
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end
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mod = ModuleToRemove
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remove_const(:ModuleToRemove)
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mod.name.should == "ModuleSpecs::ModuleToRemove"
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end
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end
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it "is set after it is removed from a constant under an anonymous module" do
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m = Module.new
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module m::Child; end
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child = m::Child
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m.send(:remove_const, :Child)
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child.name.should =~ /\A#<Module:0x\h+>::Child\z/
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end
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it "is set when opened with the module keyword" do
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ModuleSpecs.name.should == "ModuleSpecs"
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end
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it "is set when a nested module is opened with the module keyword" do
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ModuleSpecs::Anonymous.name.should == "ModuleSpecs::Anonymous"
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end
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it "is set when assigning to a constant" do
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m = Module.new
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ModuleSpecs::Anonymous::A = m
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m.name.should == "ModuleSpecs::Anonymous::A"
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end
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it "is not modified when assigning to a new constant after it has been accessed" do
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m = Module.new
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ModuleSpecs::Anonymous::B = m
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m.name.should == "ModuleSpecs::Anonymous::B"
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ModuleSpecs::Anonymous::C = m
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m.name.should == "ModuleSpecs::Anonymous::B"
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end
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it "is not modified when assigned to a different anonymous module" do
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m = Module.new
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module m::M; end
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first_name = m::M.name.dup
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module m::N; end
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m::N::F = m::M
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m::M.name.should == first_name
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end
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# http://bugs.ruby-lang.org/issues/6067
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it "is set with a conditional assignment to a nested constant" do
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eval("ModuleSpecs::Anonymous::F ||= Module.new")
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ModuleSpecs::Anonymous::F.name.should == "ModuleSpecs::Anonymous::F"
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end
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it "is set with a conditional assignment to a constant" do
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module ModuleSpecs::Anonymous
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D ||= Module.new
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end
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ModuleSpecs::Anonymous::D.name.should == "ModuleSpecs::Anonymous::D"
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end
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# http://redmine.ruby-lang.org/issues/show/1833
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it "preserves the encoding in which the class was defined" do
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require fixture(__FILE__, "name")
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ModuleSpecs::NameEncoding.new.name.encoding.should == Encoding::UTF_8
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end
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it "is set when the anonymous outer module name is set" do
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m = Module.new
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m::N = Module.new
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ModuleSpecs::Anonymous::E = m
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m::N.name.should == "ModuleSpecs::Anonymous::E::N"
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end
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ruby_version_is ""..."2.7" do
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it "returns a mutable string" do
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ModuleSpecs.name.frozen?.should be_false
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end
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it "returns a mutable string that when mutated does not modify the original module name" do
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ModuleSpecs.name << "foo"
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ModuleSpecs.name.should == "ModuleSpecs"
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end
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end
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ruby_version_is "2.7" do
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it "returns a frozen String" do
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ModuleSpecs.name.frozen?.should == true
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end
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it "always returns the same String for a given Module" do
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s1 = ModuleSpecs.name
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s2 = ModuleSpecs.name
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s1.should equal(s2)
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end
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end
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end
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