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Diffstat (limited to 'spec/ruby/core/module/const_source_location_spec.rb')
-rw-r--r-- | spec/ruby/core/module/const_source_location_spec.rb | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/spec/ruby/core/module/const_source_location_spec.rb b/spec/ruby/core/module/const_source_location_spec.rb new file mode 100644 index 0000000000..9e1f2c1c49 --- /dev/null +++ b/spec/ruby/core/module/const_source_location_spec.rb @@ -0,0 +1,220 @@ +require_relative '../../spec_helper' +require_relative '../../fixtures/constants' + +describe "Module#const_source_location" do + before do + @constants_fixture_path = File.expand_path('../../fixtures/constants.rb', __dir__) + end + + ruby_version_is "2.7" do + describe "with dynamically assigned constants" do + it "searches a path in the immediate class or module first" do + ConstantSpecs::ClassA::CSL_CONST301 = :const301_1 + ConstantSpecs::ClassA.const_source_location(:CSL_CONST301).should == [__FILE__, __LINE__ - 1] + + ConstantSpecs::ModuleA::CSL_CONST301 = :const301_2 + ConstantSpecs::ModuleA.const_source_location(:CSL_CONST301).should == [__FILE__, __LINE__ - 1] + + ConstantSpecs::ParentA::CSL_CONST301 = :const301_3 + ConstantSpecs::ParentA.const_source_location(:CSL_CONST301).should == [__FILE__, __LINE__ - 1] + + ConstantSpecs::ContainerA::ChildA::CSL_CONST301 = :const301_5 + ConstantSpecs::ContainerA::ChildA.const_source_location(:CSL_CONST301).should == [__FILE__, __LINE__ - 1] + end + + it "searches a path in a module included in the immediate class before the superclass" do + ConstantSpecs::ParentB::CSL_CONST302 = :const302_1 + ConstantSpecs::ModuleF::CSL_CONST302 = :const302_2 + ConstantSpecs::ContainerB::ChildB.const_source_location(:CSL_CONST302).should == [__FILE__, __LINE__ - 1] + end + + it "searches a path in the superclass before a module included in the superclass" do + ConstantSpecs::ModuleE::CSL_CONST303 = :const303_1 + ConstantSpecs::ParentB::CSL_CONST303 = :const303_2 + ConstantSpecs::ContainerB::ChildB.const_source_location(:CSL_CONST303).should == [__FILE__, __LINE__ - 1] + end + + it "searches a path in a module included in the superclass" do + ConstantSpecs::ModuleA::CSL_CONST304 = :const304_1 + ConstantSpecs::ModuleE::CSL_CONST304 = :const304_2 + ConstantSpecs::ContainerB::ChildB.const_source_location(:CSL_CONST304).should == [__FILE__, __LINE__ - 1] + end + + it "searches a path in the superclass chain" do + ConstantSpecs::ModuleA::CSL_CONST305 = :const305 + ConstantSpecs::ContainerB::ChildB.const_source_location(:CSL_CONST305).should == [__FILE__, __LINE__ - 1] + end + + it "returns path to a toplevel constant when the receiver is a Class" do + Object::CSL_CONST306 = :const306 + ConstantSpecs::ContainerB::ChildB.const_source_location(:CSL_CONST306).should == [__FILE__, __LINE__ - 1] + end + + it "returns path to a toplevel constant when the receiver is a Module" do + Object::CSL_CONST308 = :const308 + ConstantSpecs.const_source_location(:CSL_CONST308).should == [__FILE__, __LINE__ - 1] + ConstantSpecs::ModuleA.const_source_location(:CSL_CONST308).should == [__FILE__, __LINE__ - 2] + end + + it "returns path to the updated value of a constant" do + ConstantSpecs::ClassB::CSL_CONST309 = :const309_1 + ConstantSpecs::ClassB.const_source_location(:CSL_CONST309).should == [__FILE__, __LINE__ - 1] + + -> { + ConstantSpecs::ClassB::CSL_CONST309 = :const309_2 + }.should complain(/already initialized constant/) + ConstantSpecs::ClassB.const_source_location(:CSL_CONST309).should == [__FILE__, __LINE__ - 2] + end + end + + describe "with statically assigned constants" do + it "searches location path the immediate class or module first" do + ConstantSpecs::ClassA.const_source_location(:CS_CONST10).should == [@constants_fixture_path, ConstantSpecs::ClassA::CS_CONST10_LINE] + ConstantSpecs::ModuleA.const_source_location(:CS_CONST10).should == [@constants_fixture_path, ConstantSpecs::ModuleA::CS_CONST10_LINE] + ConstantSpecs::ParentA.const_source_location(:CS_CONST10).should == [@constants_fixture_path, ConstantSpecs::ParentA::CS_CONST10_LINE] + ConstantSpecs::ContainerA.const_source_location(:CS_CONST10).should == [@constants_fixture_path, ConstantSpecs::ContainerA::CS_CONST10_LINE] + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST10).should == [@constants_fixture_path, ConstantSpecs::ContainerA::ChildA::CS_CONST10_LINE] + end + + it "searches location path a module included in the immediate class before the superclass" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST15).should == [@constants_fixture_path, ConstantSpecs::ModuleC::CS_CONST15_LINE] + end + + it "searches location path the superclass before a module included in the superclass" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST11).should == [@constants_fixture_path, ConstantSpecs::ParentA::CS_CONST11_LINE] + end + + it "searches location path a module included in the superclass" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST12).should == [@constants_fixture_path, ConstantSpecs::ModuleB::CS_CONST12_LINE] + end + + it "searches location path the superclass chain" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST13).should == [@constants_fixture_path, ConstantSpecs::ModuleA::CS_CONST13_LINE] + end + + it "returns location path a toplevel constant when the receiver is a Class" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST1).should == [@constants_fixture_path, CS_CONST1_LINE] + end + + it "returns location path a toplevel constant when the receiver is a Module" do + ConstantSpecs.const_source_location(:CS_CONST1).should == [@constants_fixture_path, CS_CONST1_LINE] + ConstantSpecs::ModuleA.const_source_location(:CS_CONST1).should == [@constants_fixture_path, CS_CONST1_LINE] + end + end + + it "return empty path if constant defined in C code" do + Object.const_source_location(:String).should == [] + end + + it "accepts a String or Symbol name" do + Object.const_source_location(:CS_CONST1).should == [@constants_fixture_path, CS_CONST1_LINE] + Object.const_source_location("CS_CONST1").should == [@constants_fixture_path, CS_CONST1_LINE] + end + + it "returns nil if no constant is defined in the search path" do + ConstantSpecs.const_source_location(:CS_CONSTX).should == nil + end + + it "raises a NameError if the name does not start with a capital letter" do + -> { ConstantSpecs.const_source_location "name" }.should raise_error(NameError) + end + + it "raises a NameError if the name starts with a non-alphabetic character" do + -> { ConstantSpecs.const_source_location "__CONSTX__" }.should raise_error(NameError) + -> { ConstantSpecs.const_source_location "@CS_CONST1" }.should raise_error(NameError) + -> { ConstantSpecs.const_source_location "!CS_CONST1" }.should raise_error(NameError) + end + + it "raises a NameError if the name contains non-alphabetic characters except '_'" do + Object.const_source_location("CS_CONST1").should == [@constants_fixture_path, CS_CONST1_LINE] + -> { ConstantSpecs.const_source_location "CS_CONST1=" }.should raise_error(NameError) + -> { ConstantSpecs.const_source_location "CS_CONST1?" }.should raise_error(NameError) + end + + it "calls #to_str to convert the given name to a String" do + name = mock("ClassA") + name.should_receive(:to_str).and_return("ClassA") + ConstantSpecs.const_source_location(name).should == [@constants_fixture_path, ConstantSpecs::ClassA::CS_CLASS_A_LINE] + end + + it "raises a TypeError if conversion to a String by calling #to_str fails" do + name = mock('123') + -> { ConstantSpecs.const_source_location(name) }.should raise_error(TypeError) + + name.should_receive(:to_str).and_return(123) + -> { ConstantSpecs.const_source_location(name) }.should raise_error(TypeError) + end + + it "does not search the singleton class of a Class or Module" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST14).should == nil + ConstantSpecs.const_source_location(:CS_CONST14).should == nil + end + + it "does not search the containing scope" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST20).should == [@constants_fixture_path, ConstantSpecs::ParentA::CS_CONST20_LINE] + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST5) == nil + end + + it "returns nil if the constant is defined in the receiver's superclass and the inherit flag is false" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST4, false).should == nil + end + + it "searches into the receiver superclasses if the inherit flag is true" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST4, true).should == [@constants_fixture_path, ConstantSpecs::ParentA::CS_CONST4_LINE] + end + + it "returns nil when the receiver is a Module, the constant is defined at toplevel and the inherit flag is false" do + ConstantSpecs::ModuleA.const_source_location(:CS_CONST1, false).should == nil + end + + it "returns nil when the receiver is a Class, the constant is defined at toplevel and the inherit flag is false" do + ConstantSpecs::ContainerA::ChildA.const_source_location(:CS_CONST1, false).should == nil + end + + it "accepts a toplevel scope qualifier" do + ConstantSpecs.const_source_location("::CS_CONST1").should == [@constants_fixture_path, CS_CONST1_LINE] + end + + it "accepts a scoped constant name" do + ConstantSpecs.const_source_location("ClassA::CS_CONST10").should == [@constants_fixture_path, ConstantSpecs::ClassA::CS_CONST10_LINE] + end + + it "raises a NameError if the name includes two successive scope separators" do + -> { ConstantSpecs.const_source_location("ClassA::::CS_CONST10") }.should raise_error(NameError) + end + + it "raises a NameError if only '::' is passed" do + -> { ConstantSpecs.const_source_location("::") }.should raise_error(NameError) + end + + it "raises a NameError if a Symbol has a toplevel scope qualifier" do + -> { ConstantSpecs.const_source_location(:'::CS_CONST1') }.should raise_error(NameError) + end + + it "raises a NameError if a Symbol is a scoped constant name" do + -> { ConstantSpecs.const_source_location(:'ClassA::CS_CONST10') }.should raise_error(NameError) + end + + it "does search private constants path" do + ConstantSpecs.const_source_location(:CS_PRIVATE).should == [@constants_fixture_path, ConstantSpecs::CS_PRIVATE_LINE] + end + + context 'autoload' do + before :all do + ConstantSpecs.autoload :CSL_CONST1, "#{__dir__}/notexisting.rb" + @line = __LINE__ - 1 + end + + it 'returns the autoload location while not resolved' do + ConstantSpecs.const_source_location('CSL_CONST1').should == [__FILE__, @line] + end + + it 'returns where the constant was resolved when resolved' do + file = fixture(__FILE__, 'autoload_location.rb') + ConstantSpecs.autoload :CONST_LOCATION, file + line = ConstantSpecs::CONST_LOCATION + ConstantSpecs.const_source_location('CONST_LOCATION').should == [file, line] + end + end + end +end |