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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
require 'spec_helper'
describe API::Helpers::Pagination do
let(:resource) { Project.all }
subject do
Class.new.include(described_class).new
end
describe '#paginate' do
let(:value) { spy('return value') }
before do
allow(value).to receive(:to_query).and_return(value)
allow(subject).to receive(:header).and_return(value)
allow(subject).to receive(:params).and_return(value)
allow(subject).to receive(:request).and_return(value)
end
describe 'required instance methods' do
let(:return_spy) { spy }
it 'requires some instance methods' do
expect_message(:header)
expect_message(:params)
expect_message(:request)
subject.paginate(resource)
end
end
context 'when resource can be paginated' do
before do
create_list(:empty_project, 3)
end
describe 'first page' do
before do
allow(subject).to receive(:params)
.and_return({ page: 1, per_page: 2 })
end
it 'returns appropriate amount of resources' do
expect(subject.paginate(resource).count).to eq 2
end
it 'adds appropriate headers' do
expect_header('X-Total', '3')
expect_header('X-Total-Pages', '2')
expect_header('X-Per-Page', '2')
expect_header('X-Page', '1')
expect_header('X-Next-Page', '2')
expect_header('X-Prev-Page', '')
expect_header('Link', any_args)
subject.paginate(resource)
end
end
describe 'second page' do
before do
allow(subject).to receive(:params)
.and_return({ page: 2, per_page: 2 })
end
it 'returns appropriate amount of resources' do
expect(subject.paginate(resource).count).to eq 1
end
it 'adds appropriate headers' do
expect_header('X-Total', '3')
expect_header('X-Total-Pages', '2')
expect_header('X-Per-Page', '2')
expect_header('X-Page', '2')
expect_header('X-Next-Page', '')
expect_header('X-Prev-Page', '1')
expect_header('Link', any_args)
subject.paginate(resource)
end
end
end
def expect_header(name, value)
expect(subject).to receive(:header).with(name, value)
end
def expect_message(method)
expect(subject).to receive(method)
.at_least(:once).and_return(value)
end
end
end
|
