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
54
55
56
57
|
require 'spec_helper'
describe Immutable::Set do
let(:set) { S[*values] }
describe '#grep' do
let(:grep) { set.grep(String, &block) }
shared_examples 'check filtered values' do
it 'returns the filtered values' do
expect(grep).to eq(S[*filtered])
end
end
shared_examples 'check different types of inputs' do
context 'with an empty set' do
let(:values) { [] }
let(:filtered) { [] }
include_examples 'check filtered values'
end
context 'with a single item set' do
let(:values) { ['A'] }
let(:filtered) { ['A'] }
include_examples 'check filtered values'
end
context "with a single item set that doesn't contain match" do
let(:values) { [1] }
let(:filtered) { [] }
include_examples 'check filtered values'
end
context "with a multi-item set where one isn't a match" do
let(:values) { ['A', 2, 'C'] }
let(:filtered) { %w[A C] }
include_examples 'check filtered values'
end
end
context 'without a block' do
let(:block) { nil }
include_examples 'check different types of inputs'
end
describe 'with a block' do
let(:block) { ->(item) { item }}
include_examples 'check different types of inputs'
end
end
end
|
