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-rw-r--r--spec/ruby/language/lambda_spec.rb620
1 files changed, 0 insertions, 620 deletions
diff --git a/spec/ruby/language/lambda_spec.rb b/spec/ruby/language/lambda_spec.rb
deleted file mode 100644
index a3f01ec04b..0000000000
--- a/spec/ruby/language/lambda_spec.rb
+++ /dev/null
@@ -1,620 +0,0 @@
-require_relative '../spec_helper'
-require_relative 'fixtures/classes'
-
-describe "A lambda literal -> () { }" do
- SpecEvaluate.desc = "for definition"
-
- it "returns a Proc object when used in a BasicObject method" do
- klass = Class.new(BasicObject) do
- def create_lambda
- -> { }
- end
- end
-
- klass.new.create_lambda.should be_an_instance_of(Proc)
- end
-
- it "does not execute the block" do
- -> { fail }.should be_an_instance_of(Proc)
- end
-
- it "returns a lambda" do
- -> { }.lambda?.should be_true
- end
-
- it "may include a rescue clause" do
- eval('-> do raise ArgumentError; rescue ArgumentError; 7; end').should be_an_instance_of(Proc)
- end
-
- it "may include a ensure clause" do
- eval('-> do 1; ensure; 2; end').should be_an_instance_of(Proc)
- end
-
- it "has its own scope for local variables" do
- l = -> arg {
- var = arg
- # this would override var if it was declared outside the lambda
- l.call(arg-1) if arg > 0
- var
- }
- l.call(1).should == 1
- end
-
- context "assigns no local variables" do
- evaluate <<-ruby do
- @a = -> { }
- @b = ->() { }
- @c = -> () { }
- @d = -> do end
- ruby
-
- @a.().should be_nil
- @b.().should be_nil
- @c.().should be_nil
- @d.().should be_nil
- end
- end
-
- context "assigns variables from parameters" do
- evaluate <<-ruby do
- @a = -> (a) { a }
- ruby
-
- @a.(1).should == 1
- end
-
- evaluate <<-ruby do
- @a = -> ((a)) { a }
- ruby
-
- @a.(1).should == 1
- @a.([1, 2, 3]).should == 1
- end
-
- evaluate <<-ruby do
- @a = -> ((*a, b)) { [a, b] }
- ruby
-
- @a.(1).should == [[], 1]
- @a.([1, 2, 3]).should == [[1, 2], 3]
- end
-
- evaluate <<-ruby do
- @a = -> (a={}) { a }
- ruby
-
- @a.().should == {}
- @a.(2).should == 2
- end
-
- evaluate <<-ruby do
- @a = -> (*) { }
- ruby
-
- @a.().should be_nil
- @a.(1).should be_nil
- @a.(1, 2, 3).should be_nil
- end
-
- evaluate <<-ruby do
- @a = -> (*a) { a }
- ruby
-
- @a.().should == []
- @a.(1).should == [1]
- @a.(1, 2, 3).should == [1, 2, 3]
- end
-
- evaluate <<-ruby do
- @a = -> (a:) { a }
- ruby
-
- -> { @a.() }.should raise_error(ArgumentError)
- @a.(a: 1).should == 1
- end
-
- evaluate <<-ruby do
- @a = -> (a: 1) { a }
- ruby
-
- @a.().should == 1
- @a.(a: 2).should == 2
- end
-
- evaluate <<-ruby do
- @a = -> (**) { }
- ruby
-
- @a.().should be_nil
- @a.(a: 1, b: 2).should be_nil
- -> { @a.(1) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- @a = -> (**k) { k }
- ruby
-
- @a.().should == {}
- @a.(a: 1, b: 2).should == {a: 1, b: 2}
- end
-
- evaluate <<-ruby do
- @a = -> (&b) { b }
- ruby
-
- @a.().should be_nil
- @a.() { }.should be_an_instance_of(Proc)
- end
-
- evaluate <<-ruby do
- @a = -> (a, b) { [a, b] }
- ruby
-
- @a.(1, 2).should == [1, 2]
- -> { @a.() }.should raise_error(ArgumentError)
- -> { @a.(1) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- @a = -> ((a, b, *c, d), (*e, f, g), (*h)) do
- [a, b, c, d, e, f, g, h]
- end
- ruby
-
- @a.(1, 2, 3).should == [1, nil, [], nil, [], 2, nil, [3]]
- result = @a.([1, 2, 3], [4, 5, 6, 7, 8], [9, 10])
- result.should == [1, 2, [], 3, [4, 5, 6], 7, 8, [9, 10]]
- end
-
- evaluate <<-ruby do
- @a = -> (a, (b, (c, *d, (e, (*f)), g), (h, (i, j)))) do
- [a, b, c, d, e, f, g, h, i, j]
- end
- ruby
-
- @a.(1, 2).should == [1, 2, nil, [], nil, [nil], nil, nil, nil, nil]
- result = @a.(1, [2, [3, 4, 5, [6, [7, 8]], 9], [10, [11, 12]]])
- result.should == [1, 2, 3, [4, 5], 6, [7, 8], 9, 10, 11, 12]
- end
-
- ruby_version_is ''...'3.0' do
- evaluate <<-ruby do
- @a = -> (*, **k) { k }
- ruby
-
- @a.().should == {}
- @a.(1, 2, 3, a: 4, b: 5).should == {a: 4, b: 5}
-
- suppress_keyword_warning do
- h = mock("keyword splat")
- h.should_receive(:to_hash).and_return({a: 1})
- @a.(h).should == {a: 1}
- end
- end
- end
-
- ruby_version_is '3.0' do
- evaluate <<-ruby do
- @a = -> (*, **k) { k }
- ruby
-
- @a.().should == {}
- @a.(1, 2, 3, a: 4, b: 5).should == {a: 4, b: 5}
-
- h = mock("keyword splat")
- h.should_not_receive(:to_hash)
- @a.(h).should == {}
- end
- end
-
- evaluate <<-ruby do
- @a = -> (*, &b) { b }
- ruby
-
- @a.().should be_nil
- @a.(1, 2, 3, 4).should be_nil
- @a.(&(l = ->{})).should equal(l)
- end
-
- evaluate <<-ruby do
- @a = -> (a:, b:) { [a, b] }
- ruby
-
- @a.(a: 1, b: 2).should == [1, 2]
- end
-
- evaluate <<-ruby do
- @a = -> (a:, b: 1) { [a, b] }
- ruby
-
- @a.(a: 1).should == [1, 1]
- @a.(a: 1, b: 2).should == [1, 2]
- end
-
- evaluate <<-ruby do
- @a = -> (a: 1, b:) { [a, b] }
- ruby
-
- @a.(b: 0).should == [1, 0]
- @a.(b: 2, a: 3).should == [3, 2]
- end
-
- evaluate <<-ruby do
- @a = -> (a: @a = -> (a: 1) { a }, b:) do
- [a, b]
- end
- ruby
-
- @a.(a: 2, b: 3).should == [2, 3]
- @a.(b: 1).should == [@a, 1]
-
- # Note the default value of a: in the original method.
- @a.().should == 1
- end
-
- evaluate <<-ruby do
- @a = -> (a: 1, b: 2) { [a, b] }
- ruby
-
- @a.().should == [1, 2]
- @a.(b: 3, a: 4).should == [4, 3]
- end
-
- evaluate <<-ruby do
- @a = -> (a, b=1, *c, (*d, (e)), f: 2, g:, h:, **k, &l) do
- [a, b, c, d, e, f, g, h, k, l]
- end
- ruby
-
- result = @a.(9, 8, 7, 6, f: 5, g: 4, h: 3, &(l = ->{}))
- result.should == [9, 8, [7], [], 6, 5, 4, 3, {}, l]
- end
-
- evaluate <<-ruby do
- @a = -> a, b=1, *c, d, e:, f: 2, g:, **k, &l do
- [a, b, c, d, e, f, g, k, l]
- end
- ruby
-
- result = @a.(1, 2, e: 3, g: 4, h: 5, i: 6, &(l = ->{}))
- result.should == [1, 1, [], 2, 3, 2, 4, { h: 5, i: 6 }, l]
- end
-
- describe "with circular optional argument reference" do
- it "raises a SyntaxError if using an existing local with the same name as the argument" do
- a = 1
- -> {
- @proc = eval "-> (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 "-> (a=a) { a }"
- }.should raise_error(SyntaxError)
- end
-
- it "calls an existing method with the same name as the argument if explicitly using ()" do
- def a; 1; end
- -> a=a() { a }.call.should == 1
- end
- end
- end
-end
-
-describe "A lambda expression 'lambda { ... }'" do
- SpecEvaluate.desc = "for definition"
-
- it "calls the #lambda method" do
- obj = mock("lambda definition")
- obj.should_receive(:lambda).and_return(obj)
-
- def obj.define
- lambda { }
- end
-
- obj.define.should equal(obj)
- end
-
- it "does not execute the block" do
- lambda { fail }.should be_an_instance_of(Proc)
- end
-
- it "returns a lambda" do
- lambda { }.lambda?.should be_true
- end
-
- it "requires a block" do
- suppress_warning do
- lambda { lambda }.should raise_error(ArgumentError)
- end
- end
-
- it "may include a rescue clause" do
- eval('lambda do raise ArgumentError; rescue ArgumentError; 7; end').should be_an_instance_of(Proc)
- end
-
- context "with an implicit block" do
- before do
- def meth; lambda; end
- end
-
- it "raises ArgumentError" do
- implicit_lambda = nil
- suppress_warning do
- -> {
- meth { 1 }
- }.should raise_error(ArgumentError, /tried to create Proc object without a block/)
- end
- end
- end
-
- context "assigns no local variables" do
- evaluate <<-ruby do
- @a = lambda { }
- @b = lambda { || }
- ruby
-
- @a.().should be_nil
- @b.().should be_nil
- end
- end
-
- context "assigns variables from parameters" do
- evaluate <<-ruby do
- @a = lambda { |a| a }
- ruby
-
- @a.(1).should == 1
- end
-
- evaluate <<-ruby do
- def m(*a) yield(*a) end
- @a = lambda { |a| a }
- ruby
-
- lambda { m(&@a) }.should raise_error(ArgumentError)
- lambda { m(1, 2, &@a) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- @a = lambda { |a, | a }
- ruby
-
- @a.(1).should == 1
- @a.([1, 2]).should == [1, 2]
-
- lambda { @a.() }.should raise_error(ArgumentError)
- lambda { @a.(1, 2) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- def m(a) yield a end
- def m2() yield end
-
- @a = lambda { |a, | a }
- ruby
-
- m(1, &@a).should == 1
- m([1, 2], &@a).should == [1, 2]
-
- lambda { m2(&@a) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- @a = lambda { |(a)| a }
- ruby
-
- @a.(1).should == 1
- @a.([1, 2, 3]).should == 1
- end
-
- evaluate <<-ruby do
- @a = lambda { |(*a, b)| [a, b] }
- ruby
-
- @a.(1).should == [[], 1]
- @a.([1, 2, 3]).should == [[1, 2], 3]
- end
-
- evaluate <<-ruby do
- @a = lambda { |a={}| a }
- ruby
-
- @a.().should == {}
- @a.(2).should == 2
- end
-
- evaluate <<-ruby do
- @a = lambda { |*| }
- ruby
-
- @a.().should be_nil
- @a.(1).should be_nil
- @a.(1, 2, 3).should be_nil
- end
-
- evaluate <<-ruby do
- @a = lambda { |*a| a }
- ruby
-
- @a.().should == []
- @a.(1).should == [1]
- @a.(1, 2, 3).should == [1, 2, 3]
- end
-
- evaluate <<-ruby do
- @a = lambda { |a:| a }
- ruby
-
- lambda { @a.() }.should raise_error(ArgumentError)
- @a.(a: 1).should == 1
- end
-
- evaluate <<-ruby do
- @a = lambda { |a: 1| a }
- ruby
-
- @a.().should == 1
- @a.(a: 2).should == 2
- end
-
- evaluate <<-ruby do
- @a = lambda { |**| }
- ruby
-
- @a.().should be_nil
- @a.(a: 1, b: 2).should be_nil
- lambda { @a.(1) }.should raise_error(ArgumentError)
- end
-
- evaluate <<-ruby do
- @a = lambda { |**k| k }
- ruby
-
- @a.().should == {}
- @a.(a: 1, b: 2).should == {a: 1, b: 2}
- end
-
- evaluate <<-ruby do
- @a = lambda { |&b| b }
- ruby
-
- @a.().should be_nil
- @a.() { }.should be_an_instance_of(Proc)
- end
-
- evaluate <<-ruby do
- @a = lambda { |a, b| [a, b] }
- ruby
-
- @a.(1, 2).should == [1, 2]
- end
-
- evaluate <<-ruby do
- @a = lambda do |(a, b, *c, d), (*e, f, g), (*h)|
- [a, b, c, d, e, f, g, h]
- end
- ruby
-
- @a.(1, 2, 3).should == [1, nil, [], nil, [], 2, nil, [3]]
- result = @a.([1, 2, 3], [4, 5, 6, 7, 8], [9, 10])
- result.should == [1, 2, [], 3, [4, 5, 6], 7, 8, [9, 10]]
- end
-
- evaluate <<-ruby do
- @a = lambda do |a, (b, (c, *d, (e, (*f)), g), (h, (i, j)))|
- [a, b, c, d, e, f, g, h, i, j]
- end
- ruby
-
- @a.(1, 2).should == [1, 2, nil, [], nil, [nil], nil, nil, nil, nil]
- result = @a.(1, [2, [3, 4, 5, [6, [7, 8]], 9], [10, [11, 12]]])
- result.should == [1, 2, 3, [4, 5], 6, [7, 8], 9, 10, 11, 12]
- end
-
- ruby_version_is ''...'3.0' do
- evaluate <<-ruby do
- @a = lambda { |*, **k| k }
- ruby
-
- @a.().should == {}
- @a.(1, 2, 3, a: 4, b: 5).should == {a: 4, b: 5}
-
- suppress_keyword_warning do
- h = mock("keyword splat")
- h.should_receive(:to_hash).and_return({a: 1})
- @a.(h).should == {a: 1}
- end
- end
- end
-
- ruby_version_is '3.0' do
- evaluate <<-ruby do
- @a = lambda { |*, **k| k }
- ruby
-
- @a.().should == {}
- @a.(1, 2, 3, a: 4, b: 5).should == {a: 4, b: 5}
-
- h = mock("keyword splat")
- h.should_not_receive(:to_hash)
- @a.(h).should == {}
- end
- end
-
- evaluate <<-ruby do
- @a = lambda { |*, &b| b }
- ruby
-
- @a.().should be_nil
- @a.(1, 2, 3, 4).should be_nil
- @a.(&(l = ->{})).should equal(l)
- end
-
- evaluate <<-ruby do
- @a = lambda { |a:, b:| [a, b] }
- ruby
-
- @a.(a: 1, b: 2).should == [1, 2]
- end
-
- evaluate <<-ruby do
- @a = lambda { |a:, b: 1| [a, b] }
- ruby
-
- @a.(a: 1).should == [1, 1]
- @a.(a: 1, b: 2).should == [1, 2]
- end
-
- evaluate <<-ruby do
- @a = lambda { |a: 1, b:| [a, b] }
- ruby
-
- @a.(b: 0).should == [1, 0]
- @a.(b: 2, a: 3).should == [3, 2]
- end
-
- evaluate <<-ruby do
- @a = lambda do |a: (@a = -> (a: 1) { a }), b:|
- [a, b]
- end
- ruby
-
- @a.(a: 2, b: 3).should == [2, 3]
- @a.(b: 1).should == [@a, 1]
-
- # Note the default value of a: in the original method.
- @a.().should == 1
- end
-
- evaluate <<-ruby do
- @a = lambda { |a: 1, b: 2| [a, b] }
- ruby
-
- @a.().should == [1, 2]
- @a.(b: 3, a: 4).should == [4, 3]
- end
-
- evaluate <<-ruby do
- @a = lambda do |a, b=1, *c, (*d, (e)), f: 2, g:, h:, **k, &l|
- [a, b, c, d, e, f, g, h, k, l]
- end
- ruby
-
- result = @a.(9, 8, 7, 6, f: 5, g: 4, h: 3, &(l = ->{}))
- result.should == [9, 8, [7], [], 6, 5, 4, 3, {}, l]
- end
-
- evaluate <<-ruby do
- @a = lambda do |a, b=1, *c, d, e:, f: 2, g:, **k, &l|
- [a, b, c, d, e, f, g, k, l]
- end
- ruby
-
- result = @a.(1, 2, e: 3, g: 4, h: 5, i: 6, &(l = ->{}))
- result.should == [1, 1, [], 2, 3, 2, 4, { h: 5, i: 6 }, l]
- end
- end
-end
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