blob: 951b364f07093e09a5ba3504920d195cab67b5f8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
require_relative '../../../spec_helper'
ruby_version_is "2.6" do
describe "Enumerator::Chain#rewind" do
before(:each) do
@obj = mock('obj')
@obj.should_receive(:each).any_number_of_times.and_yield
@second = mock('obj')
@second.should_receive(:each).any_number_of_times.and_yield
@enum = Enumerator::Chain.new(@obj, @second)
end
it "returns self" do
@enum.rewind.should equal @enum
end
it "does nothing if receiver has not been iterated" do
@obj.should_not_receive(:rewind)
@obj.respond_to?(:rewind).should == true # sanity check
@enum.rewind
end
it "does nothing on objects that don't respond_to rewind" do
@obj.respond_to?(:rewind).should == false # sanity check
@enum.each {}
@enum.rewind
end
it "calls_rewind its objects" do
@obj.should_receive(:rewind)
@enum.each {}
@enum.rewind
end
it "calls_rewind in reverse order" do
@obj.should_not_receive(:rewind)
@second.should_receive(:rewind).and_raise(RuntimeError)
@enum.each {}
-> { @enum.rewind }.should raise_error(RuntimeError)
end
it "calls rewind only for objects that have actually been iterated on" do
@obj = mock('obj')
@obj.should_receive(:each).any_number_of_times.and_raise(RuntimeError)
@enum = Enumerator::Chain.new(@obj, @second)
@obj.should_receive(:rewind)
@second.should_not_receive(:rewind)
-> { @enum.each {} }.should raise_error(RuntimeError)
@enum.rewind
end
end
end
|