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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
ruby_version_is "2.7" do
describe "Module#ruby2_keywords" do
it "marks the final hash argument as keyword hash" do
obj = Object.new
obj.singleton_class.class_exec do
def foo(*a) a.last end
ruby2_keywords :foo
end
last = obj.foo(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
end
it "makes a copy of the hash and only marks the copy as keyword hash" do
obj = Object.new
obj.singleton_class.class_exec do
def regular(*args)
args.last
end
ruby2_keywords def foo(*args)
args.last
end
end
h = {a: 1}
ruby_version_is "3.0" do
obj.regular(**h).should.equal?(h)
end
last = obj.foo(**h)
Hash.ruby2_keywords_hash?(last).should == true
Hash.ruby2_keywords_hash?(h).should == false
last2 = obj.foo(**last) # last is already marked
Hash.ruby2_keywords_hash?(last2).should == true
Hash.ruby2_keywords_hash?(last).should == true
last2.should_not.equal?(last)
Hash.ruby2_keywords_hash?(h).should == false
end
it "makes a copy and unmark at the call site when calling with marked *args" do
obj = Object.new
obj.singleton_class.class_exec do
ruby2_keywords def foo(*args)
args
end
def single(arg)
arg
end
def splat(*args)
args.last
end
def kwargs(**kw)
kw
end
end
h = { a: 1 }
args = obj.foo(**h)
marked = args.last
Hash.ruby2_keywords_hash?(marked).should == true
after_usage = obj.single(*args)
after_usage.should == h
after_usage.should_not.equal?(h)
after_usage.should_not.equal?(marked)
Hash.ruby2_keywords_hash?(after_usage).should == false
Hash.ruby2_keywords_hash?(marked).should == true
after_usage = obj.splat(*args)
after_usage.should == h
after_usage.should_not.equal?(h)
after_usage.should_not.equal?(marked)
ruby_bug "#18625", ""..."3.3" do # might be fixed in 3.2
Hash.ruby2_keywords_hash?(after_usage).should == false
end
Hash.ruby2_keywords_hash?(marked).should == true
after_usage = obj.kwargs(*args)
after_usage.should == h
after_usage.should_not.equal?(h)
after_usage.should_not.equal?(marked)
Hash.ruby2_keywords_hash?(after_usage).should == false
Hash.ruby2_keywords_hash?(marked).should == true
end
it "applies to the underlying method and applies across aliasing" do
obj = Object.new
obj.singleton_class.class_exec do
def foo(*a) a.last end
alias_method :bar, :foo
ruby2_keywords :foo
def baz(*a) a.last end
ruby2_keywords :baz
alias_method :bob, :baz
end
last = obj.foo(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
last = obj.bar(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
last = obj.baz(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
last = obj.bob(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
end
ruby_version_is "2.7" ... "3.0" do
it "fixes delegation warnings when calling a method accepting keywords" do
obj = Object.new
obj.singleton_class.class_exec do
def foo(*a) bar(*a) end
def bar(*a, **b) end
end
-> { obj.foo(1, 2, {a: "a"}) }.should complain(/Using the last argument as keyword parameters is deprecated/)
obj.singleton_class.class_exec do
ruby2_keywords :foo
end
-> { obj.foo(1, 2, {a: "a"}) }.should_not complain
end
end
it "returns nil" do
obj = Object.new
obj.singleton_class.class_exec do
def foo(*a) end
ruby2_keywords(:foo).should == nil
end
end
it "raises NameError when passed not existing method name" do
obj = Object.new
-> {
obj.singleton_class.class_exec do
ruby2_keywords :not_existing
end
}.should raise_error(NameError, /undefined method `not_existing'/)
end
it "accepts String as well" do
obj = Object.new
obj.singleton_class.class_exec do
def foo(*a) a.last end
ruby2_keywords "foo"
end
last = obj.foo(1, 2, a: "a")
Hash.ruby2_keywords_hash?(last).should == true
end
it "raises TypeError when passed not Symbol or String" do
obj = Object.new
-> {
obj.singleton_class.class_exec do
ruby2_keywords Object.new
end
}.should raise_error(TypeError, /is not a symbol nor a string/)
end
it "prints warning when a method does not accept argument splat" do
obj = Object.new
def obj.foo(a, b, c) end
-> {
obj.singleton_class.class_exec do
ruby2_keywords :foo
end
}.should complain(/Skipping set of ruby2_keywords flag for/)
end
it "prints warning when a method accepts keywords" do
obj = Object.new
def obj.foo(a:, b:) end
-> {
obj.singleton_class.class_exec do
ruby2_keywords :foo
end
}.should complain(/Skipping set of ruby2_keywords flag for/)
end
it "prints warning when a method accepts keyword splat" do
obj = Object.new
def obj.foo(**a) end
-> {
obj.singleton_class.class_exec do
ruby2_keywords :foo
end
}.should complain(/Skipping set of ruby2_keywords flag for/)
end
end
end
|
