diff options
Diffstat (limited to 'spec/ruby/language/defined_spec.rb')
-rw-r--r-- | spec/ruby/language/defined_spec.rb | 161 |
1 files changed, 156 insertions, 5 deletions
diff --git a/spec/ruby/language/defined_spec.rb b/spec/ruby/language/defined_spec.rb index 38345c3727..34408c0190 100644 --- a/spec/ruby/language/defined_spec.rb +++ b/spec/ruby/language/defined_spec.rb @@ -48,6 +48,20 @@ describe "The defined? keyword for literals" do end describe "The defined? keyword when called with a method name" do + before :each do + ScratchPad.clear + end + + it "does not call the method" do + defined?(DefinedSpecs.side_effects).should == "method" + ScratchPad.recorded.should != :defined_specs_side_effects + end + + it "does not execute the arguments" do + defined?(DefinedSpecs.any_args(DefinedSpecs.side_effects)).should == "method" + ScratchPad.recorded.should != :defined_specs_side_effects + end + describe "without a receiver" do it "returns 'method' if the method is defined" do ret = defined?(puts) @@ -102,6 +116,11 @@ describe "The defined? keyword when called with a method name" do defined?(obj.a_defined_method).should == "method" end + it "returns 'method' for []=" do + a = [] + defined?(a[0] = 1).should == "method" + end + it "returns nil if the method is not defined" do obj = DefinedSpecs::Basic.new defined?(obj.an_undefined_method).should be_nil @@ -166,6 +185,32 @@ describe "The defined? keyword when called with a method name" do ScratchPad.recorded.should == :defined_specs_fixnum_method end end + + describe "having a throw in the receiver" do + it "escapes defined? and performs the throw semantics as normal" do + defined_returned = false + catch(:out) { + # NOTE: defined? behaves differently if it is called in a void context, see below + defined?(throw(:out, 42).foo).should == :unreachable + defined_returned = true + }.should == 42 + defined_returned.should == false + end + end + + describe "in a void context" do + it "does not execute the receiver" do + ScratchPad.record :not_executed + defined?(DefinedSpecs.side_effects / 2) + ScratchPad.recorded.should == :not_executed + end + + it "warns about the void context when parsing it" do + -> { + eval "defined?(DefinedSpecs.side_effects / 2); 42" + }.should complain(/warning: possibly useless use of defined\? in void context/, verbose: true) + end + end end describe "The defined? keyword for an expression" do @@ -191,6 +236,14 @@ describe "The defined? keyword for an expression" do defined?(@@defined_specs_x = 2).should == "assignment" end + it "returns 'assignment' for assigning a constant" do + defined?(A = 2).should == "assignment" + end + + it "returns 'assignment' for assigning a fully qualified constant" do + defined?(Object::A = 2).should == "assignment" + end + it "returns 'assignment' for assigning multiple variables" do defined?((a, b = 1, 2)).should == "assignment" end @@ -208,7 +261,27 @@ describe "The defined? keyword for an expression" do end it "returns 'assignment' for an expression with '+='" do - defined?(x += 2).should == "assignment" + defined?(a += 1).should == "assignment" + defined?(@a += 1).should == "assignment" + defined?(@@a += 1).should == "assignment" + defined?($a += 1).should == "assignment" + defined?(A += 1).should == "assignment" + # fully qualified constant check is moved out into a separate test case + defined?(a.b += 1).should == "assignment" + defined?(a[:b] += 1).should == "assignment" + end + + # https://bugs.ruby-lang.org/issues/20111 + ruby_version_is ""..."3.4" do + it "returns 'expression' for an assigning a fully qualified constant with '+='" do + defined?(Object::A += 1).should == "expression" + end + end + + ruby_version_is "3.4" do + it "returns 'assignment' for an assigning a fully qualified constant with '+='" do + defined?(Object::A += 1).should == "assignment" + end end it "returns 'assignment' for an expression with '*='" do @@ -239,12 +312,90 @@ describe "The defined? keyword for an expression" do defined?(x >>= 2).should == "assignment" end - it "returns 'assignment' for an expression with '||='" do - defined?(x ||= 2).should == "assignment" + context "||=" do + it "returns 'assignment' for assigning a local variable with '||='" do + defined?(a ||= true).should == "assignment" + end + + it "returns 'assignment' for assigning an instance variable with '||='" do + defined?(@a ||= true).should == "assignment" + end + + it "returns 'assignment' for assigning a class variable with '||='" do + defined?(@@a ||= true).should == "assignment" + end + + it "returns 'assignment' for assigning a global variable with '||='" do + defined?($a ||= true).should == "assignment" + end + + it "returns 'assignment' for assigning a constant with '||='" do + defined?(A ||= true).should == "assignment" + end + + # https://bugs.ruby-lang.org/issues/20111 + ruby_version_is ""..."3.4" do + it "returns 'expression' for assigning a fully qualified constant with '||='" do + defined?(Object::A ||= true).should == "expression" + end + end + + ruby_version_is "3.4" do + it "returns 'assignment' for assigning a fully qualified constant with '||='" do + defined?(Object::A ||= true).should == "assignment" + end + end + + it "returns 'assignment' for assigning an attribute with '||='" do + defined?(a.b ||= true).should == "assignment" + end + + it "returns 'assignment' for assigning a referenced element with '||='" do + defined?(a[:b] ||= true).should == "assignment" + end end - it "returns 'assignment' for an expression with '&&='" do - defined?(x &&= 2).should == "assignment" + context "&&=" do + it "returns 'assignment' for assigning a local variable with '&&='" do + defined?(a &&= true).should == "assignment" + end + + it "returns 'assignment' for assigning an instance variable with '&&='" do + defined?(@a &&= true).should == "assignment" + end + + it "returns 'assignment' for assigning a class variable with '&&='" do + defined?(@@a &&= true).should == "assignment" + end + + it "returns 'assignment' for assigning a global variable with '&&='" do + defined?($a &&= true).should == "assignment" + end + + it "returns 'assignment' for assigning a constant with '&&='" do + defined?(A &&= true).should == "assignment" + end + + # https://bugs.ruby-lang.org/issues/20111 + ruby_version_is ""..."3.4" do + it "returns 'expression' for assigning a fully qualified constant with '&&='" do + defined?(Object::A &&= true).should == "expression" + end + end + + ruby_version_is "3.4" do + it "returns 'assignment' for assigning a fully qualified constant with '&&='" do + defined?(Object::A &&= true).should == "assignment" + end + end + + it "returns 'assignment' for assigning an attribute with '&&='" do + defined?(a.b &&= true).should == "assignment" + end + + it "returns 'assignment' for assigning a referenced element with '&&='" do + defined?(a[:b] &&= true).should == "assignment" + end end it "returns 'assignment' for an expression with '**='" do |