require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "Kernel" do it "has private instance method Array()" do Kernel.should have_private_instance_method(:Array) end end describe :kernel_Array, shared: true do before :each do @array = [1, 2, 3] end it "does not call #to_ary on an Array" do @array.should_not_receive(:to_ary) @object.send(@method, @array).should == @array end it "calls #to_ary to convert the argument to an Array" do obj = mock("Array([1,2,3])") obj.should_receive(:to_ary).and_return(@array) obj.should_not_receive(:to_a) @object.send(@method, obj).should == @array end it "does not call #to_a on an Array" do @array.should_not_receive(:to_a) @object.send(@method, @array).should == @array end it "calls #to_a if the argument does not respond to #to_ary" do obj = mock("Array([1,2,3])") obj.should_receive(:to_a).and_return(@array) @object.send(@method, obj).should == @array end it "calls #to_a if #to_ary returns nil" do obj = mock("Array([1,2,3])") obj.should_receive(:to_ary).and_return(nil) obj.should_receive(:to_a).and_return(@array) @object.send(@method, obj).should == @array end it "returns an Array containing the argument if #to_a returns nil" do obj = mock("Array([1,2,3])") obj.should_receive(:to_a).and_return(nil) @object.send(@method, obj).should == [obj] end it "calls #to_ary first, even if it's private" do obj = KernelSpecs::PrivateToAry.new @object.send(@method, obj).should == [1, 2] end it "calls #to_a if #to_ary is not defined, even if it's private" do obj = KernelSpecs::PrivateToA.new @object.send(@method, obj).should == [3, 4] end it "returns an Array containing the argument if it responds to neither #to_ary nor #to_a" do obj = mock("Array(x)") @object.send(@method, obj).should == [obj] end it "returns an empty Array when passed nil" do @object.send(@method, nil).should == [] end it "raises a TypeError if #to_ary does not return an Array" do obj = mock("Array() string") obj.should_receive(:to_ary).and_return("string") lambda { @object.send(@method, obj) }.should raise_error(TypeError) end it "raises a TypeError if #to_a does not return an Array" do obj = mock("Array() string") obj.should_receive(:to_a).and_return("string") lambda { @object.send(@method, obj) }.should raise_error(TypeError) end end describe "Kernel.Array" do it_behaves_like :kernel_Array, :Array_method, KernelSpecs end describe "Kernel#Array" do it_behaves_like :kernel_Array, :Array_function, KernelSpecs end