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authorGrzegorz Bizon <grzesiek.bizon@gmail.com>2016-12-22 13:50:45 +0100
committerGrzegorz Bizon <grzesiek.bizon@gmail.com>2016-12-27 12:11:29 +0100
commitf9331db136f19dfdc6b2affa0922bdcda7c681fc (patch)
tree4493c6b4f5e306e9a6fc7015762c3bd5c650ffb7 /spec/lib/api
parentd57faaa040bf885481f5a27e12cabc62eeda7ee0 (diff)
downloadgitlab-ce-f9331db136f19dfdc6b2affa0922bdcda7c681fc.tar.gz
Add tests for pagination module extracted from API
Diffstat (limited to 'spec/lib/api')
-rw-r--r--spec/lib/api/helpers/pagination_spec.rb94
1 files changed, 94 insertions, 0 deletions
diff --git a/spec/lib/api/helpers/pagination_spec.rb b/spec/lib/api/helpers/pagination_spec.rb
new file mode 100644
index 00000000000..267318faed4
--- /dev/null
+++ b/spec/lib/api/helpers/pagination_spec.rb
@@ -0,0 +1,94 @@
+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