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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/eql', __FILE__)
describe "Array#==" do
it_behaves_like :array_eql, :==
it "compares with an equivalent Array-like object using #to_ary" do
# FIXME: Proper implementation, commented out due
# to mspec bugs (#194 and #195):
# obj = mock('array-like')
# obj.should_receive(:respond_to?).with(:to_ary).and_return(true)
# obj.should_receive(:==).with([1]).and_return(true)
obj = Object.new
def obj.to_ary; [1]; end
def obj.==(arg); to_ary == arg; end
([1] == obj).should be_true
([[1]] == [obj]).should be_true
([[[1], 3], 2] == [[obj, 3], 2]).should be_true
ruby_version_is "1.9.1" do
# recursive arrays
arr1 = [[1]]
arr1 << arr1
arr2 = [obj]
arr2 << arr2
(arr1 == arr2).should be_true
(arr2 == arr1).should be_true
end
end
it "returns false if any corresponding elements are not #==" do
a = ["a", "b", "c"]
b = ["a", "b", "not equal value"]
a.should_not == b
c = mock("c")
c.should_receive(:==).and_return(false)
["a", "b", c].should_not == a
end
it "returns true if corresponding elements are #==" do
[].should == []
["a", "c", 7].should == ["a", "c", 7]
[1, 2, 3].should == [1.0, 2.0, 3.0]
obj = mock('5')
obj.should_receive(:==).and_return(true)
[obj].should == [5]
end
# As per bug #1720
it "returns false for [NaN] == [NaN]" do
[nan_value].should_not == [nan_value]
end
end
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