tests(yaml_processor): complete test scenarios on 'include' keyword

spec/lib/gitlab/ci/config/entry/global_spec.rb

@@ -13,7 +13,7 @@ describe Gitlab::Ci::Config::Entry::Global do
         expect(described_class.nodes.keys)
           .to match_array(%i[before_script image services
                              after_script variables stages
-                             types cache])
+                             types cache include])
       end
     end
   end
@@ -42,7 +42,7 @@ describe Gitlab::Ci::Config::Entry::Global do
         end
 
         it 'creates node object for each entry' do
-          expect(global.descendants.count).to eq 8
+          expect(global.descendants.count).to eq 9
         end
 
         it 'creates node object using valid class' do
@@ -189,7 +189,7 @@ describe Gitlab::Ci::Config::Entry::Global do
 
       describe '#nodes' do
         it 'instantizes all nodes' do
-          expect(global.descendants.count).to eq 8
+          expect(global.descendants.count).to eq 9
         end
 
         it 'contains unspecified nodes' do

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -603,11 +603,81 @@ module Gitlab
       end
 
       describe "Include" do
-        it "does not return any error with a valid configuration" do
-          config = YAML.dump({ include: "/local.gitlab-ci.yml" })
-          expect do
-            Gitlab::Ci::YamlProcessor.new(config)
-          end.not_to raise_error(Gitlab::Ci::YamlProcessor::ValidationError)
+        let(:opts) { {} }
+
+        let(:config) do
+          {
+            include: include_content,
+            rspec: { script: "test" }
+          }
+        end
+
+        subject { Gitlab::Ci::YamlProcessor.new(YAML.dump(config), opts) }
+
+        context "when validating a ci config file with no project context" do
+          context "when an array is provided" do
+            let(:include_content) { ["/local.gitlab-ci.yml"] }
+
+            it "does not return any error" do
+              expect { subject }.not_to raise_error
+            end
+          end
+
+          context "when an array of wrong keyed object is provided" do
+            let(:include_content) { [{ yolo: "/local.gitlab-ci.yml" }] }
+
+            it "returns a validation error" do
+              expect { subject }.to raise_error(Gitlab::Ci::YamlProcessor::ValidationError)
+            end
+          end
+
+          context "when an array of mixed typed objects is provided" do
+            let(:include_content) do
+              [
+                'https://gitlab.com/awesome-project/raw/master/.before-script-template.yml',
+                '/templates/.after-script-template.yml',
+                { template: 'Auto-DevOps.gitlab-ci.yml' }
+              ]
+            end
+
+            it "does not return any error" do
+              expect { subject }.not_to raise_error
+            end
+          end
+
+          context "when the include type is incorrect" do
+            let(:include_content) { { name: "/local.gitlab-ci.yml" } }
+
+            it "returns an invalid configuration error" do
+              expect { subject }.to raise_error(Gitlab::Ci::YamlProcessor::ValidationError)
+            end
+          end
+        end
+
+        context "when validating a ci config file within a project" do
+          let(:include_content) { "/local.gitlab-ci.yml" }
+          let(:project) { create(:project, :repository) }
+          let(:opts) { { project: project, sha: project.commit.sha } }
+
+          context "when the included internal file is present" do
+            before do
+              expect(project.repository).to receive(:blob_data_at)
+                .and_return(YAML.dump({ job1: { script: 'hello' } }))
+            end
+
+            it "does not return an error" do
+              expect { subject }.not_to raise_error
+            end
+          end
+
+          context "when the included internal file is not present" do
+            it "returns an error with missing file details" do
+              expect { subject }.to raise_error(
+                Gitlab::Ci::YamlProcessor::ValidationError,
+                "Local file `#{include_content}` does not exist!"
+              )
+            end
+          end
         end
       end