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ruby--ruby/spec/ruby/core/kernel/Hash_spec.rb

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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Kernel#hash" do
it "is provided" do
1.respond_to?(:hash).should == true
end
it "is stable" do
1.hash.should == 1.hash
end
end
describe "Kernel" do
it "has private instance method Hash()" do
Kernel.should have_private_instance_method(:Hash)
end
end
describe :kernel_Hash, shared: true do
before :each do
@hash = { a: 1}
end
it "converts nil to a Hash" do
@object.send(@method, nil).should == {}
end
it "converts an empty array to a Hash" do
@object.send(@method, []).should == {}
end
it "does not call #to_hash on an Hash" do
@hash.should_not_receive(:to_hash)
@object.send(@method, @hash).should == @hash
end
it "calls #to_hash to convert the argument to an Hash" do
obj = mock("Hash(a: 1)")
obj.should_receive(:to_hash).and_return(@hash)
@object.send(@method, obj).should == @hash
end
it "raises a TypeError if it doesn't respond to #to_hash" do
lambda { @object.send(@method, mock("")) }.should raise_error(TypeError)
end
it "raises a TypeError if #to_hash does not return an Hash" do
obj = mock("Hash() string")
obj.should_receive(:to_hash).and_return("string")
lambda { @object.send(@method, obj) }.should raise_error(TypeError)
end
end
describe "Kernel.Hash" do
it_behaves_like :kernel_Hash, :Hash_method, KernelSpecs
end
describe "Kernel#Hash" do
it_behaves_like :kernel_Hash, :Hash_function, KernelSpecs
end