1require_relative '../../spec_helper'
2require_relative 'fixtures/classes'
3
4describe "Array#rassoc" do
5  it "returns the first contained array whose second element is == object" do
6    ary = [[1, "a", 0.5], [2, "b"], [3, "b"], [4, "c"], [], [5], [6, "d"]]
7    ary.rassoc("a").should == [1, "a", 0.5]
8    ary.rassoc("b").should == [2, "b"]
9    ary.rassoc("d").should == [6, "d"]
10    ary.rassoc("z").should == nil
11  end
12
13  it "properly handles recursive arrays" do
14    empty = ArraySpecs.empty_recursive_array
15    empty.rassoc([]).should be_nil
16    [[empty, empty]].rassoc(empty).should == [empty, empty]
17
18    array = ArraySpecs.recursive_array
19    array.rassoc(array).should be_nil
20    [[empty, array]].rassoc(array).should == [empty, array]
21  end
22
23  it "calls elem == obj on the second element of each contained array" do
24    key = 'foobar'
25    o = mock('foobar')
26    def o.==(other); other == 'foobar'; end
27
28    [[1, :foobar], [2, o], [3, mock('foo')]].rassoc(key).should == [2, o]
29  end
30
31  it "does not check the last element in each contained but speficically the second" do
32    key = 'foobar'
33    o = mock('foobar')
34    def o.==(other); other == 'foobar'; end
35
36    [[1, :foobar, o], [2, o, 1], [3, mock('foo')]].rassoc(key).should == [2, o, 1]
37  end
38end
39