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
|
require 'spec_helper'
describe Immutable::Set do
[:reject, :delete_if].each do |method|
describe "##{method}" do
let(:set) { S['A', 'B', 'C'] }
context 'when nothing matches' do
it 'returns self' do
set.send(method) { |item| false }.should equal(set)
end
end
context 'when only some things match' do
context 'with a block' do
let(:result) { set.send(method) { |item| item == 'A' }}
it 'preserves the original' do
result
set.should eql(S['A', 'B', 'C'])
end
it 'returns a set with the matching values' do
result.should eql(S['B', 'C'])
end
end
context 'with no block' do
it 'returns self' do
set.send(method).class.should be(Enumerator)
set.send(method).each { |item| item == 'A' }.should == S['B', 'C']
end
end
end
context 'on a large set, with many combinations of input' do
it 'still works' do
array = (1..1000).to_a
set = S.new(array)
[0, 10, 100, 200, 500, 800, 900, 999, 1000].each do |threshold|
result = set.send(method) { |item| item > threshold }
result.size.should == threshold
1.upto(threshold) { |n| result.include?(n).should == true }
(threshold+1).upto(1000) { |n| result.include?(n).should == false }
end
end
end
end
end
end
|
