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describe :hash_key_p, shared: true do
it "returns true if argument is a key" do
h = { a: 1, b: 2, c: 3, 4 => 0 }
h.send(@method, :a).should == true
h.send(@method, :b).should == true
h.send(@method, 2).should == false
h.send(@method, 4).should == true
not_supported_on :opal do
h.send(@method, 'b').should == false
h.send(@method, 4.0).should == false
end
end
it "returns true if the key's matching value was nil" do
{ xyz: nil }.send(@method, :xyz).should == true
end
it "returns true if the key's matching value was false" do
{ xyz: false }.send(@method, :xyz).should == true
end
it "returns true if the key is nil" do
{ nil => 'b' }.send(@method, nil).should == true
{ nil => nil }.send(@method, nil).should == true
end
it "compares keys with the same #hash value via #eql?" do
x = mock('x')
x.stub!(:hash).and_return(42)
y = mock('y')
y.stub!(:hash).and_return(42)
y.should_receive(:eql?).and_return(false)
{ x => nil }.send(@method, y).should == false
end
end
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