Add Gitaly integration tests for only: changes feature

spec/lib/gitlab/ci/build/policy/changes_spec.rb

@@ -3,6 +3,8 @@ require 'spec_helper'
 describe Gitlab::Ci::Build::Policy::Changes do
   set(:project) { create(:project) }
 
+  describe '#satisfied_by?' do
+    describe 'paths matching matching' do
       let(:pipeline) do
         build(:ci_empty_pipeline, project: project,
                                   ref: 'master',
@@ -23,7 +25,6 @@ describe Gitlab::Ci::Build::Policy::Changes do
         end
       end
 
-  describe '#satisfied_by?' do
       it 'is satisfied by matching literal path' do
         policy = described_class.new(%w[some/other_file.txt])
 
@@ -72,4 +73,35 @@ describe Gitlab::Ci::Build::Policy::Changes do
         end
       end
     end
+
+    describe 'gitaly integration' do
+      set(:project) { create(:project, :repository) }
+
+      let(:pipeline) do
+        create(:ci_empty_pipeline, project: project,
+                                   ref: 'master',
+                                   source: :push,
+                                   sha: '498214d',
+                                   before_sha: '281d3a7')
+      end
+
+      let(:build) do
+        create(:ci_build, pipeline: pipeline, project: project, ref: 'master')
+      end
+
+      let(:seed) { double('build seed', to_resource: build) }
+
+      it 'is satisfied by changes introduced by a push' do
+        policy = described_class.new(['with space/*.md'])
+
+        expect(policy).to be_satisfied_by(pipeline, seed)
+      end
+
+      it 'is not satisfied by changes that are not in the push' do
+        policy = described_class.new(%w[files/js/commit.js])
+
+        expect(policy).not_to be_satisfied_by(pipeline, seed)
+      end
+    end
+  end
 end

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -1354,7 +1354,7 @@ module Gitlab
           end.to raise_error(Gitlab::Ci::YamlProcessor::ValidationError, "jobs:rspec dependencies should be an array of strings")
         end
 
-        it 'returns errors if pipeline variables expression is invalid' do
+        it 'returns errors if pipeline variables expression policy is invalid' do
           config = YAML.dump({ rspec: { script: 'test', only: { variables: ['== null'] } } })
 
           expect { Gitlab::Ci::YamlProcessor.new(config) }
@@ -1362,6 +1362,14 @@ module Gitlab
                             'jobs:rspec:only variables invalid expression syntax')
         end
 
+        it 'returns errors if pipeline changes policy is invalid' do
+          config = YAML.dump({ rspec: { script: 'test', only: { changes: [1] } } })
+
+          expect { Gitlab::Ci::YamlProcessor.new(config) }
+            .to raise_error(Gitlab::Ci::YamlProcessor::ValidationError,
+                            'jobs:rspec:only changes should be an array of strings')
+        end
+
         it 'returns errors if extended hash configuration is invalid' do
           config = YAML.dump({ rspec: { extends: 'something', script: 'test' } })