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-rw-r--r--spec/ruby/language/block_spec.rb564
1 files changed, 353 insertions, 211 deletions
diff --git a/spec/ruby/language/block_spec.rb b/spec/ruby/language/block_spec.rb
index b2a3cc84c4..5bdb993aea 100644
--- a/spec/ruby/language/block_spec.rb
+++ b/spec/ruby/language/block_spec.rb
@@ -13,7 +13,7 @@ describe "A block yielded a single" do
it "receives the identical Array object" do
ary = [1, 2]
- m(ary) { |a| a }.should equal(ary)
+ m(ary) { |a| a }.should.equal?(ary)
end
it "assigns the Array to a single rest argument" do
@@ -40,80 +40,54 @@ describe "A block yielded a single" do
m([1, 2]) { |a=5, b, c, d| [a, b, c, d] }.should == [5, 1, 2, nil]
end
- it "assigns elements to required arguments when a keyword rest argument is present" do
- m([1, 2]) { |a, **k| [a, k] }.should == [1, {}]
+ it "assigns elements to pre arguments" do
+ m([1, 2]) { |a, b, c, d=5| [a, b, c, d] }.should == [1, 2, nil, 5]
end
- ruby_version_is ''..."3.0" do
- it "assigns elements to mixed argument types" do
- suppress_keyword_warning do
- result = m([1, 2, 3, {x: 9}]) { |a, b=5, *c, d, e: 2, **k| [a, b, c, d, e, k] }
- result.should == [1, 2, [], 3, 2, {x: 9}]
- end
- end
-
- it "assigns symbol keys from a Hash to keyword arguments" do
- suppress_keyword_warning do
- result = m(["a" => 1, a: 10]) { |a=nil, **b| [a, b] }
- result.should == [{"a" => 1}, a: 10]
- end
- end
-
- it "assigns symbol keys from a Hash returned by #to_hash to keyword arguments" do
- suppress_keyword_warning do
- obj = mock("coerce block keyword arguments")
- obj.should_receive(:to_hash).and_return({"a" => 1, b: 2})
-
- result = m([obj]) { |a=nil, **b| [a, b] }
- result.should == [{"a" => 1}, b: 2]
- end
- end
+ it "assigns elements to pre and post arguments" do
+ m([1 ]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 5, 6, nil, nil]
+ m([1, 2 ]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 5, 6, 2, nil]
+ m([1, 2, 3 ]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 5, 6, 2, 3]
+ m([1, 2, 3, 4 ]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 2, 6, 3, 4]
+ m([1, 2, 3, 4, 5 ]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 2, 3, 4, 5]
+ m([1, 2, 3, 4, 5, 6]) { |a, b=5, c=6, d, e| [a, b, c, d, e] }.should == [1, 2, 3, 4, 5]
end
- ruby_version_is "3.0" do
- it "assigns elements to mixed argument types" do
- result = m([1, 2, 3, {x: 9}]) { |a, b=5, *c, d, e: 2, **k| [a, b, c, d, e, k] }
- result.should == [1, 2, [3], {x: 9}, 2, {}]
- end
-
- it "does not treat final Hash as keyword arguments and does not autosplat" do
- result = m(["a" => 1, a: 10]) { |a=nil, **b| [a, b] }
- result.should == [[{"a" => 1, a: 10}], {}]
- end
-
- it "does not call #to_hash on final argument to get keyword arguments and does not autosplat" do
- suppress_keyword_warning do
- obj = mock("coerce block keyword arguments")
- obj.should_not_receive(:to_hash)
+ it "assigns elements to pre and post arguments when *rest is present" do
+ m([1 ]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 5, 6, [], nil, nil]
+ m([1, 2 ]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 5, 6, [], 2, nil]
+ m([1, 2, 3 ]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 5, 6, [], 2, 3]
+ m([1, 2, 3, 4 ]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 2, 6, [], 3, 4]
+ m([1, 2, 3, 4, 5 ]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 2, 3, [], 4, 5]
+ m([1, 2, 3, 4, 5, 6]) { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.should == [1, 2, 3, [4], 5, 6]
+ end
- result = m([obj]) { |a=nil, **b| [a, b] }
- result.should == [[obj], {}]
- end
- end
+ it "does not autosplat single argument to required arguments when a keyword rest argument is present" do
+ m([1, 2]) { |a, **k| [a, k] }.should == [[1, 2], {}]
end
- ruby_version_is ""..."2.7" do
- it "calls #to_hash on the argument and uses resulting hash as first argument when optional argument and keyword argument accepted" do
- obj = mock("coerce block keyword arguments")
- obj.should_receive(:to_hash).and_return({"a" => 1, "b" => 2})
+ it "does not autosplat single argument to required arguments when keyword arguments are present" do
+ m([1, 2]) { |a, b: :b, c: :c| [a, b, c] }.should == [[1, 2], :b, :c]
+ end
- result = m([obj]) { |a=nil, **b| [a, b] }
- result.should == [{"a" => 1, "b" => 2}, {}]
- end
+ it "raises error when required keyword arguments are present" do
+ -> {
+ m([1, 2]) { |a, b:, c:| [a, b, c] }
+ }.should.raise(ArgumentError, "missing keywords: :b, :c")
end
- ruby_version_is "2.7"...'3.0' do
- it "calls #to_hash on the argument but ignores result when optional argument and keyword argument accepted" do
- obj = mock("coerce block keyword arguments")
- obj.should_receive(:to_hash).and_return({"a" => 1, "b" => 2})
+ it "assigns elements to mixed argument types" do
+ result = m([1, 2, 3, {x: 9}]) { |a, b=5, *c, d, e: 2, **k| [a, b, c, d, e, k] }
+ result.should == [1, 2, [3], {x: 9}, 2, {}]
+ end
- result = m([obj]) { |a=nil, **b| [a, b] }
- result.should == [obj, {}]
- end
+ it "does not treat final Hash as keyword arguments and does not autosplat" do
+ result = m(["a" => 1, a: 10]) { |a=nil, **b| [a, b] }
+ result.should == [[{"a" => 1, a: 10}], {}]
end
- ruby_version_is "3.0" do
- it "does not call #to_hash on the argument when optional argument and keyword argument accepted and does not autosplat" do
+ it "does not call #to_hash on final argument to get keyword arguments and does not autosplat" do
+ suppress_keyword_warning do
obj = mock("coerce block keyword arguments")
obj.should_not_receive(:to_hash)
@@ -122,102 +96,42 @@ describe "A block yielded a single" do
end
end
- describe "when non-symbol keys are in a keyword arguments Hash" do
- ruby_version_is ""..."3.0" do
- it "separates non-symbol keys and symbol keys" do
- suppress_keyword_warning do
- result = m(["a" => 10, b: 2]) { |a=nil, **b| [a, b] }
- result.should == [{"a" => 10}, {b: 2}]
- end
- end
- end
- ruby_version_is "3.0" do
- it "does not separate non-symbol keys and symbol keys and does not autosplat" do
- suppress_keyword_warning do
- result = m(["a" => 10, b: 2]) { |a=nil, **b| [a, b] }
- result.should == [[{"a" => 10, b: 2}], {}]
- end
- end
- end
- end
+ it "does not call #to_hash on the argument when optional argument and keyword argument accepted and does not autosplat" do
+ obj = mock("coerce block keyword arguments")
+ obj.should_not_receive(:to_hash)
- ruby_version_is ""..."3.0" do
- it "does not treat hashes with string keys as keyword arguments" do
- result = m(["a" => 10]) { |a = nil, **b| [a, b] }
- result.should == [{"a" => 10}, {}]
- end
- end
-
- ruby_version_is "3.0" do
- it "does not treat hashes with string keys as keyword arguments and does not autosplat" do
- result = m(["a" => 10]) { |a = nil, **b| [a, b] }
- result.should == [[{"a" => 10}], {}]
- end
+ result = m([obj]) { |a=nil, **b| [a, b] }
+ result.should == [[obj], {}]
end
- ruby_version_is ''...'3.0' do
- it "calls #to_hash on the last element if keyword arguments are present" do
- suppress_keyword_warning do
- obj = mock("destructure block keyword arguments")
- obj.should_receive(:to_hash).and_return({x: 9})
-
- result = m([1, 2, 3, obj]) { |a, *b, c, **k| [a, b, c, k] }
- result.should == [1, [2], 3, {x: 9}]
- end
- end
-
- it "assigns the last element to a non-keyword argument if #to_hash returns nil" do
+ describe "when non-symbol keys are in a keyword arguments Hash" do
+ it "does not separate non-symbol keys and symbol keys and does not autosplat" do
suppress_keyword_warning do
- obj = mock("destructure block keyword arguments")
- obj.should_receive(:to_hash).and_return(nil)
-
- result = m([1, 2, 3, obj]) { |a, *b, c, **k| [a, b, c, k] }
- result.should == [1, [2, 3], obj, {}]
+ result = m(["a" => 10, b: 2]) { |a=nil, **b| [a, b] }
+ result.should == [[{"a" => 10, b: 2}], {}]
end
end
+ end
- it "calls #to_hash on the last element when there are more arguments than parameters" do
- suppress_keyword_warning do
- x = mock("destructure matching block keyword argument")
- x.should_receive(:to_hash).and_return({x: 9})
-
- result = m([1, 2, 3, {y: 9}, 4, 5, x]) { |a, b=5, c, **k| [a, b, c, k] }
- result.should == [1, 2, 3, {x: 9}]
- end
- end
-
- it "raises a TypeError if #to_hash does not return a Hash" do
- obj = mock("destructure block keyword arguments")
- obj.should_receive(:to_hash).and_return(1)
-
- -> { m([1, 2, 3, obj]) { |a, *b, c, **k| } }.should raise_error(TypeError)
- end
-
- it "raises the error raised inside #to_hash" do
- obj = mock("destructure block keyword arguments")
- error = RuntimeError.new("error while converting to a hash")
- obj.should_receive(:to_hash).and_raise(error)
-
- -> { m([1, 2, 3, obj]) { |a, *b, c, **k| } }.should raise_error(error)
- end
+ it "does not treat hashes with string keys as keyword arguments and does not autosplat" do
+ result = m(["a" => 10]) { |a = nil, **b| [a, b] }
+ result.should == [[{"a" => 10}], {}]
end
- ruby_version_is '3.0' do
- it "does not call #to_hash on the last element if keyword arguments are present" do
- obj = mock("destructure block keyword arguments")
- obj.should_not_receive(:to_hash)
+ it "does not call #to_hash on the last element if keyword arguments are present" do
+ obj = mock("destructure block keyword arguments")
+ obj.should_not_receive(:to_hash)
- result = m([1, 2, 3, obj]) { |a, *b, c, **k| [a, b, c, k] }
- result.should == [1, [2, 3], obj, {}]
- end
+ result = m([1, 2, 3, obj]) { |a, *b, c, **k| [a, b, c, k] }
+ result.should == [1, [2, 3], obj, {}]
+ end
- it "does not call #to_hash on the last element when there are more arguments than parameters" do
- x = mock("destructure matching block keyword argument")
- x.should_not_receive(:to_hash)
+ it "does not call #to_hash on the last element when there are more arguments than parameters" do
+ x = mock("destructure matching block keyword argument")
+ x.should_not_receive(:to_hash)
- result = m([1, 2, 3, {y: 9}, 4, 5, x]) { |a, b=5, c, **k| [a, b, c, k] }
- result.should == [1, 2, 3, {}]
- end
+ result = m([1, 2, 3, {y: 9}, 4, 5, x]) { |a, b=5, c, **k| [a, b, c, k] }
+ result.should == [1, 2, 3, {}]
end
it "does not call #to_ary on the Array" do
@@ -264,11 +178,70 @@ describe "A block yielded a single" do
m(obj) { |a, b, c| [a, b, c] }.should == [obj, nil, nil]
end
+ it "receives the object if it does not respond to #to_ary" do
+ obj = Object.new
+
+ m(obj) { |a, b, c| [a, b, c] }.should == [obj, nil, nil]
+ end
+
+ it "calls #respond_to? to check if object has method #to_ary" do
+ obj = mock("destructure block arguments")
+ obj.should_receive(:respond_to?).with(:to_ary, true).and_return(true)
+ obj.should_receive(:to_ary).and_return([1, 2])
+
+ m(obj) { |a, b, c| [a, b, c] }.should == [1, 2, nil]
+ end
+
+ it "calls #respond_to? on a BasicObject to check if object has method #to_ary" do
+ ScratchPad.record []
+ obj = BasicObject.new
+ def obj.respond_to?(name, *)
+ ScratchPad << [:respond_to?, name]
+ name == :to_ary ? true : super
+ end
+ def obj.to_ary
+ ScratchPad << :to_ary
+ [1, 2]
+ end
+
+ m(obj) { |a, b, c| [a, b, c] }.should == [1, 2, nil]
+ ScratchPad.recorded.should == [[:respond_to?, :to_ary], :to_ary]
+ end
+
+ it "receives the object if it does not respond to #respond_to?" do
+ obj = BasicObject.new
+
+ m(obj) { |a, b, c| [a, b, c] }.should == [obj, nil, nil]
+ end
+
+ it "calls #to_ary on the object when it is defined dynamically" do
+ obj = Object.new
+ def obj.method_missing(name, *args, &block)
+ if name == :to_ary
+ [1, 2]
+ else
+ super
+ end
+ end
+ def obj.respond_to_missing?(name, include_private)
+ name == :to_ary
+ end
+
+ m(obj) { |a, b, c| [a, b, c] }.should == [1, 2, nil]
+ end
+
it "raises a TypeError if #to_ary does not return an Array" do
obj = mock("destructure block arguments")
obj.should_receive(:to_ary).and_return(1)
- -> { m(obj) { |a, b| } }.should raise_error(TypeError)
+ -> { m(obj) { |a, b| } }.should.raise(TypeError)
+ end
+
+ it "raises error transparently if #to_ary raises error on its own" do
+ obj = Object.new
+ def obj.to_ary; raise "Exception raised in #to_ary" end
+
+ -> { m(obj) { |a, b| } }.should.raise(RuntimeError, "Exception raised in #to_ary")
end
end
end
@@ -318,7 +291,7 @@ describe "A block" do
end
it "may include a rescue clause" do
- eval("@y.z do raise ArgumentError; rescue ArgumentError; 7; end").should == 7
+ @y.z do raise ArgumentError; rescue ArgumentError; 7; end.should == 7
end
end
@@ -332,13 +305,13 @@ describe "A block" do
end
it "may include a rescue clause" do
- eval('@y.z do || raise ArgumentError; rescue ArgumentError; 7; end').should == 7
+ @y.z do || raise ArgumentError; rescue ArgumentError; 7; end.should == 7
end
end
describe "taking |a| arguments" do
it "assigns nil to the argument when no values are yielded" do
- @y.z { |a| a }.should be_nil
+ @y.z { |a| a }.should == nil
end
it "assigns the value yielded to the argument" do
@@ -349,7 +322,7 @@ describe "A block" do
obj = mock("block yield to_ary")
obj.should_not_receive(:to_ary)
- @y.s(obj) { |a| a }.should equal(obj)
+ @y.s(obj) { |a| a }.should.equal?(obj)
end
it "assigns the first value yielded to the argument" do
@@ -361,7 +334,7 @@ describe "A block" do
end
it "may include a rescue clause" do
- eval('@y.s(1) do |x| raise ArgumentError; rescue ArgumentError; 7; end').should == 7
+ @y.s(1) do |x| raise ArgumentError; rescue ArgumentError; 7; end.should == 7
end
end
@@ -425,16 +398,15 @@ describe "A block" do
obj = mock("block yield to_ary invalid")
obj.should_receive(:to_ary).and_return(1)
- -> { @y.s(obj) { |a, b| } }.should raise_error(TypeError)
+ -> { @y.s(obj) { |a, b| } }.should.raise(TypeError)
end
it "raises the original exception if #to_ary raises an exception" do
obj = mock("block yield to_ary raising an exception")
obj.should_receive(:to_ary).and_raise(ZeroDivisionError)
- -> { @y.s(obj) { |a, b| } }.should raise_error(ZeroDivisionError)
+ -> { @y.s(obj) { |a, b| } }.should.raise(ZeroDivisionError)
end
-
end
describe "taking |a, *b| arguments" do
@@ -489,7 +461,7 @@ describe "A block" do
obj = mock("block yield to_ary invalid")
obj.should_receive(:to_ary).and_return(1)
- -> { @y.s(obj) { |a, *b| } }.should raise_error(TypeError)
+ -> { @y.s(obj) { |a, *b| } }.should.raise(TypeError)
end
end
@@ -567,7 +539,7 @@ describe "A block" do
describe "taking |a, | arguments" do
it "assigns nil to the argument when no values are yielded" do
- @y.z { |a, | a }.should be_nil
+ @y.z { |a, | a }.should == nil
end
it "assigns the argument a single value yielded" do
@@ -583,7 +555,7 @@ describe "A block" do
end
it "assigns nil to the argument when passed an empty Array" do
- @y.s([]) { |a, | a }.should be_nil
+ @y.s([]) { |a, | a }.should == nil
end
it "assigns the argument the first element of the Array when passed a single Array" do
@@ -614,7 +586,7 @@ describe "A block" do
obj = mock("block yield to_ary invalid")
obj.should_receive(:to_ary).and_return(1)
- -> { @y.s(obj) { |a, | } }.should raise_error(TypeError)
+ -> { @y.s(obj) { |a, | } }.should.raise(TypeError)
end
end
@@ -656,7 +628,7 @@ describe "A block" do
obj = mock("block yield to_ary invalid")
obj.should_receive(:to_ary).and_return(1)
- -> { @y.s(obj) { |(a, b)| } }.should raise_error(TypeError)
+ -> { @y.s(obj) { |(a, b)| } }.should.raise(TypeError)
end
end
@@ -697,7 +669,7 @@ describe "A block" do
obj = mock("block yield to_ary invalid")
obj.should_receive(:to_ary).and_return(1)
- -> { @y.s(obj) { |(a, b), c| } }.should raise_error(TypeError)
+ -> { @y.s(obj) { |(a, b), c| } }.should.raise(TypeError)
end
end
@@ -756,15 +728,51 @@ describe "A block" do
describe "taking identically-named arguments" do
it "raises a SyntaxError for standard arguments" do
- -> { eval "lambda { |x,x| }" }.should raise_error(SyntaxError)
- -> { eval "->(x,x) {}" }.should raise_error(SyntaxError)
- -> { eval "Proc.new { |x,x| }" }.should raise_error(SyntaxError)
+ -> { eval "lambda { |x,x| }" }.should.raise(SyntaxError)
+ -> { eval "->(x,x) {}" }.should.raise(SyntaxError)
+ -> { eval "Proc.new { |x,x| }" }.should.raise(SyntaxError)
end
it "accepts unnamed arguments" do
- eval("lambda { |_,_| }").should be_an_instance_of(Proc)
- eval("->(_,_) {}").should be_an_instance_of(Proc)
- eval("Proc.new { |_,_| }").should be_an_instance_of(Proc)
+ lambda { |_,_| }.should.instance_of?(Proc) # rubocop:disable Style/Lambda
+ -> _,_ {}.should.instance_of?(Proc)
+ Proc.new { |_,_| }.should.instance_of?(Proc)
+ end
+ end
+
+ describe 'pre and post parameters' do
+ it "assigns nil to unassigned required arguments" do
+ proc { |a, *b, c, d| [a, b, c, d] }.call(1, 2).should == [1, [], 2, nil]
+ end
+
+ it "assigns elements to optional arguments" do
+ proc { |a=5, b=4, c=3| [a, b, c] }.call(1, 2).should == [1, 2, 3]
+ end
+
+ it "assigns elements to post arguments" do
+ proc { |a=5, b, c, d| [a, b, c, d] }.call(1, 2).should == [5, 1, 2, nil]
+ end
+
+ it "assigns elements to pre arguments" do
+ proc { |a, b, c, d=5| [a, b, c, d] }.call(1, 2).should == [1, 2, nil, 5]
+ end
+
+ it "assigns elements to pre and post arguments" do
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1 ).should == [1, 5, 6, nil, nil]
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1, 2 ).should == [1, 5, 6, 2, nil]
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1, 2, 3 ).should == [1, 5, 6, 2, 3]
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1, 2, 3, 4 ).should == [1, 2, 6, 3, 4]
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1, 2, 3, 4, 5 ).should == [1, 2, 3, 4, 5]
+ proc { |a, b=5, c=6, d, e| [a, b, c, d, e] }.call(1, 2, 3, 4, 5, 6).should == [1, 2, 3, 4, 5]
+ end
+
+ it "assigns elements to pre and post arguments when *rest is present" do
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1 ).should == [1, 5, 6, [], nil, nil]
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1, 2 ).should == [1, 5, 6, [], 2, nil]
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1, 2, 3 ).should == [1, 5, 6, [], 2, 3]
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1, 2, 3, 4 ).should == [1, 2, 6, [], 3, 4]
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1, 2, 3, 4, 5 ).should == [1, 2, 3, [], 4, 5]
+ proc { |a, b=5, c=6, *d, e, f| [a, b, c, d, e, f] }.call(1, 2, 3, 4, 5, 6).should == [1, 2, 3, [4], 5, 6]
end
end
end
@@ -779,29 +787,29 @@ describe "Block-local variables" do
end
it "can not have the same name as one of the standard parameters" do
- -> { eval "[1].each {|foo; foo| }" }.should raise_error(SyntaxError)
- -> { eval "[1].each {|foo, bar; glark, bar| }" }.should raise_error(SyntaxError)
+ -> { eval "[1].each {|foo; foo| }" }.should.raise(SyntaxError)
+ -> { eval "[1].each {|foo, bar; glark, bar| }" }.should.raise(SyntaxError)
end
it "can not be prefixed with an asterisk" do
- -> { eval "[1].each {|foo; *bar| }" }.should raise_error(SyntaxError)
+ -> { eval "[1].each {|foo; *bar| }" }.should.raise(SyntaxError)
-> do
eval "[1].each {|foo, bar; glark, *fnord| }"
- end.should raise_error(SyntaxError)
+ end.should.raise(SyntaxError)
end
it "can not be prefixed with an ampersand" do
- -> { eval "[1].each {|foo; &bar| }" }.should raise_error(SyntaxError)
+ -> { eval "[1].each {|foo; &bar| }" }.should.raise(SyntaxError)
-> do
eval "[1].each {|foo, bar; glark, &fnord| }"
- end.should raise_error(SyntaxError)
+ end.should.raise(SyntaxError)
end
it "can not be assigned default values" do
- -> { eval "[1].each {|foo; bar=1| }" }.should raise_error(SyntaxError)
+ -> { eval "[1].each {|foo; bar=1| }" }.should.raise(SyntaxError)
-> do
eval "[1].each {|foo, bar; glark, fnord=:fnord| }"
- end.should raise_error(SyntaxError)
+ end.should.raise(SyntaxError)
end
it "need not be preceded by standard parameters" do
@@ -810,8 +818,8 @@ describe "Block-local variables" do
end
it "only allow a single semi-colon in the parameter list" do
- -> { eval "[1].each {|foo; bar; glark| }" }.should raise_error(SyntaxError)
- -> { eval "[1].each {|; bar; glark| }" }.should raise_error(SyntaxError)
+ -> { eval "[1].each {|foo; bar; glark| }" }.should.raise(SyntaxError)
+ -> { eval "[1].each {|; bar; glark| }" }.should.raise(SyntaxError)
end
it "override shadowed variables from the outer scope" do
@@ -836,21 +844,21 @@ describe "Block-local variables" do
end
it "are not automatically instantiated in the outer scope" do
- defined?(glark).should be_nil
+ defined?(glark).should == nil
[1].each {|;glark| 1}
- defined?(glark).should be_nil
+ defined?(glark).should == nil
end
it "are automatically instantiated in the block" do
[1].each do |;glark|
- glark.should be_nil
+ glark.should == nil
end
end
it "are visible in deeper scopes before initialization" do
[1].each {|;glark|
[1].each {
- defined?(glark).should_not be_nil
+ defined?(glark).should_not == nil
glark = 1
}
glark.should == 1
@@ -878,7 +886,7 @@ describe "Post-args" do
-> *a, b do
[a, b]
end.call
- }.should raise_error(ArgumentError)
+ }.should.raise(ArgumentError)
end
it "are assigned to nil when not enough arguments are given to a proc" do
@@ -949,44 +957,27 @@ describe "Post-args" do
end
describe "with a circular argument reference" do
- ruby_version_is ''...'2.7' do
- it "warns and uses a nil value when there is an existing local variable with same name" do
+ ruby_version_is ""..."3.4" do
+ it "raises a SyntaxError if using the argument in its default value" do
a = 1
-> {
- @proc = eval "proc { |a=a| a }"
- }.should complain(/circular argument reference/)
- @proc.call.should == nil
- end
-
- it "warns and uses a nil value when there is an existing method with same name" do
- def a; 1; end
- -> {
- @proc = eval "proc { |a=a| a }"
- }.should complain(/circular argument reference/)
- @proc.call.should == nil
+ eval "proc { |a=a| a }"
+ }.should.raise(SyntaxError)
end
end
- ruby_version_is '2.7' do
- it "raises a SyntaxError if using an existing local with the same name as the argument" do
- a = 1
+ ruby_version_is "3.4" do
+ it "is nil if using the argument in its default value" do
-> {
- @proc = eval "proc { |a=a| a }"
- }.should raise_error(SyntaxError)
- end
-
- it "raises a SyntaxError if there is an existing method with the same name as the argument" do
- def a; 1; end
- -> {
- @proc = eval "proc { |a=a| a }"
- }.should raise_error(SyntaxError)
+ eval "proc { |a=a| a }.call"
+ }.call.should == nil
end
end
+ end
- it "calls an existing method with the same name as the argument if explicitly using ()" do
- def a; 1; end
- proc { |a=a()| a }.call.should == 1
- end
+ it "calls an existing method with the same name as the argument if explicitly using ()" do
+ def a; 1; end
+ proc { |a=a()| a }.call.should == 1
end
end
@@ -1004,3 +995,154 @@ describe "Post-args" do
end
end
end
+
+# tested more thoroughly in language/delegation_spec.rb
+describe "Anonymous block forwarding" do
+ it "forwards blocks to other method that formally declares anonymous block" do
+ def b(&); c(&) end
+ def c(&); yield :non_null end
+
+ b { |c| c }.should == :non_null
+ end
+
+ it "requires the anonymous block parameter to be declared if directly passing a block" do
+ -> { eval "def a; b(&); end; def b; end" }.should.raise(SyntaxError)
+ end
+
+ it "works when it's the only declared parameter" do
+ def inner; yield end
+ def block_only(&); inner(&) end
+
+ block_only { 1 }.should == 1
+ end
+
+ it "works alongside positional parameters" do
+ def inner; yield end
+ def pos(arg1, &); inner(&) end
+
+ pos(:a) { 1 }.should == 1
+ end
+
+ it "works alongside positional arguments and splatted keyword arguments" do
+ def inner; yield end
+ def pos_kwrest(arg1, **kw, &); inner(&) end
+
+ pos_kwrest(:a, arg: 3) { 1 }.should == 1
+ end
+
+ it "works alongside positional arguments and disallowed keyword arguments" do
+ def inner; yield end
+ def no_kw(arg1, **nil, &); inner(&) end
+
+ no_kw(:a) { 1 }.should == 1
+ end
+
+ it "works alongside explicit keyword arguments" do
+ eval <<-EOF
+ def inner; yield end
+ def rest_kw(*a, kwarg: 1, &); inner(&) end
+ def kw(kwarg: 1, &); inner(&) end
+ def pos_kw_kwrest(arg1, kwarg: 1, **kw, &); inner(&) end
+ def pos_rkw(arg1, kwarg1:, &); inner(&) end
+ def all(arg1, arg2, *rest, post1, post2, kw1: 1, kw2: 2, okw1:, okw2:, &); inner(&) end
+ def all_kwrest(arg1, arg2, *rest, post1, post2, kw1: 1, kw2: 2, okw1:, okw2:, **kw, &); inner(&) end
+ EOF
+
+ rest_kw { 1 }.should == 1
+ kw { 1 }.should == 1
+ pos_kw_kwrest(:a) { 1 }.should == 1
+ pos_rkw(:a, kwarg1: 3) { 1 }.should == 1
+ all(:a, :b, :c, :d, :e, okw1: 'x', okw2: 'y') { 1 }.should == 1
+ all_kwrest(:a, :b, :c, :d, :e, okw1: 'x', okw2: 'y') { 1 }.should == 1
+ end
+end
+
+describe "`it` calls without arguments in a block" do
+ ruby_version_is ""..."3.4" do
+ it "emits a deprecation warning" do
+ -> {
+ eval "proc { it }"
+ }.should complain(/warning: `it` calls without arguments will refer to the first block param in Ruby 3.4; use it\(\) or self.it/)
+ end
+
+ it "emits a deprecation warning if numbered parameters are used" do
+ -> {
+ eval "proc { it; _1 }"
+ }.should complain(/warning: `it` calls without arguments will refer to the first block param in Ruby 3.4; use it\(\) or self.it/)
+ end
+
+ it "does not emit a deprecation warning when a block has parameters" do
+ -> { eval "proc { |a, b| it }" }.should_not complain
+ -> { eval "proc { |*rest| it }" }.should_not complain
+ -> { eval "proc { |*| it }" }.should_not complain
+ -> { eval "proc { |a:, b:| it }" }.should_not complain
+ -> { eval "proc { |**kw| it }" }.should_not complain
+ -> { eval "proc { |**| it }" }.should_not complain
+ -> { eval "proc { |&block| it }" }.should_not complain
+ -> { eval "proc { |&| it }" }.should_not complain
+ -> { eval "proc { || it }" }.should_not complain
+ end
+
+ it "does not emit a deprecation warning when `it` calls with arguments" do
+ -> { eval "proc { it(42) }" }.should_not complain
+ -> { eval "proc { it 42 }" }.should_not complain
+ end
+
+ it "does not emit a deprecation warning when `it` calls with a block" do
+ -> { eval "proc { it {} }" }.should_not complain
+ end
+
+ it "does not emit a deprecation warning when a local variable inside the block named `it` exists" do
+ -> { eval "proc { it = 42; it }" }.should_not complain
+ end
+
+ it "does not emit a deprecation warning when `it` calls with explicit empty arguments list" do
+ -> { eval "proc { it() }" }.should_not complain
+ end
+
+ it "calls the method `it` if defined" do
+ o = Object.new
+ def o.it
+ 21
+ end
+ suppress_warning do
+ o.instance_eval("proc { it * 2 }").call(1).should == 42
+ end
+ end
+ end
+
+ ruby_version_is "4.1" do
+ it "works alongside disallowed block argument" do
+ no_block = eval <<-EOF
+ proc {|arg1, &nil| arg1}
+ EOF
+
+ no_block.call(:a).should == :a
+ -> { no_block.call(:a) {} }.should.raise(ArgumentError, 'no block accepted')
+ end
+ end
+end
+
+# Duplicates specs in language/it_parameter_spec.rb
+# Need them here to run on Ruby versions prior 3.4
+# TODO: remove when the minimal supported Ruby version is 3.4
+describe "if `it` is defined as a variable" do
+ it "treats `it` as a captured variable if defined outside of a block" do
+ it = 5
+ proc { it }.call(0).should == 5
+ end
+
+ it "treats `it` as a local variable if defined inside of a block" do
+ proc { it = 5; it }.call(0).should == 5
+ end
+end
+
+describe "Block-parameter destructuring" do
+ it "does not warn about unused inner names in verbose mode" do
+ -> {
+ eval <<~RUBY, binding, __FILE__, __LINE__ + 1
+ proc { |key, (val1, val2)| [key, val2] }
+ RUBY
+ }.should_not complain(verbose: true)
+ end
+end
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-29 23:37:56 +0000