Extend project lint result struct with includes

The Gitlab API exposes a list of (recursive) includes when linting
a projects ci configuration. The ProjectLintResult struct representing
the API response does not reflect this list, so a user of the SDK
cannot use this information from the API.

validate.go

@@ -44,10 +44,26 @@ type LintResult struct {
 // GitLab API docs:
 // https://docs.gitlab.com/ee/api/lint.html#validate-a-projects-ci-configuration
 type ProjectLintResult struct {
-	Valid      bool     `json:"valid"`
-	Errors     []string `json:"errors"`
-	Warnings   []string `json:"warnings"`
-	MergedYaml string   `json:"merged_yaml"`
+	Valid      bool      `json:"valid"`
+	Errors     []string  `json:"errors"`
+	Warnings   []string  `json:"warnings"`
+	MergedYaml string    `json:"merged_yaml"`
+	Includes   []Include `json:"includes"`
+}
+
+// Include contains the details about an include block in the .gitlab-ci.yml file.
+// It is used in ProjectLintResult.
+//
+// Reference can be found at the lint API endpoint in the openapi yaml:
+// https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/api/openapi/openapi_v2.yaml
+type Include struct {
+	Type           string                 `json:"type"`
+	Location       string                 `json:"location"`
+	Blob           string                 `json:"blob"`
+	Raw            string                 `json:"raw"`
+	Extra          map[string]interface{} `json:"extra"`
+	ContextProject string                 `json:"context_project"`
+	ContextSHA     string                 `json:"context_sha"`
 }
 
 // LintOptions represents the available Lint() options.

validate_test.go

@@ -172,13 +172,41 @@ func TestValidateProjectNamespace(t *testing.T) {
 				"valid": true,
 				"errors": [],
 				"warnings": [],
-				"merged_yaml": 	"---\n:build:\n  :script:\n  - echo build"
+				"merged_yaml": 	"---\n:build:\n  :script:\n  - echo build",
+				"includes": [
+					{
+						"type": "file",
+      					"location": "template/pipeline.yml",
+      					"blob": "https://gitlab.com/namespace/project/-/blob/abcd1234/template/pipeline.yml",
+      					"raw": "https://gitlab.com/namespace/project/-/raw/abcd1234/template/pipeline.yml",
+      					"extra": {
+        					"project": "namespace/project",
+        					"ref": "1.2.3"
+      					},
+      					"context_project": "namespace/current-project",
+      					"context_sha": "abcd1234"
+    				}
+				]
 			}`,
 			want: &ProjectLintResult{
 				Valid:      true,
 				Warnings:   []string{},
 				Errors:     []string{},
 				MergedYaml: "---\n:build:\n  :script:\n  - echo build",
+				Includes: []Include{
+					{
+						Type:     "file",
+						Location: "template/pipeline.yml",
+						Blob:     "https://gitlab.com/namespace/project/-/blob/abcd1234/template/pipeline.yml",
+						Raw:      "https://gitlab.com/namespace/project/-/raw/abcd1234/template/pipeline.yml",
+						Extra: map[string]interface{}{
+							"project": "namespace/project",
+							"ref":     "1.2.3",
+						},
+						ContextProject: "namespace/current-project",
+						ContextSHA:     "abcd1234",
+					},
+				},
 			},
 		},
 		{
@@ -242,13 +270,41 @@ func TestValidateProjectLint(t *testing.T) {
 				"valid": true,
 				"errors": [],
 				"warnings": [],
-				"merged_yaml": 	"---\n:build:\n  :script:\n  - echo build"
+				"merged_yaml": 	"---\n:build:\n  :script:\n  - echo build",
+				"includes": [
+					{
+						"type": "file",
+      					"location": "template/pipeline.yml",
+      					"blob": "https://gitlab.com/namespace/project/-/blob/abcd1234/template/pipeline.yml",
+      					"raw": "https://gitlab.com/namespace/project/-/raw/abcd1234/template/pipeline.yml",
+      					"extra": {
+        					"project": "namespace/project",
+        					"ref": "1.2.3"
+      					},
+      					"context_project": "namespace/current-project",
+      					"context_sha": "abcd1234"
+    				}
+				]
 			}`,
 			want: &ProjectLintResult{
 				Valid:      true,
 				Warnings:   []string{},
 				Errors:     []string{},
 				MergedYaml: "---\n:build:\n  :script:\n  - echo build",
+				Includes: []Include{
+					{
+						Type:     "file",
+						Location: "template/pipeline.yml",
+						Blob:     "https://gitlab.com/namespace/project/-/blob/abcd1234/template/pipeline.yml",
+						Raw:      "https://gitlab.com/namespace/project/-/raw/abcd1234/template/pipeline.yml",
+						Extra: map[string]interface{}{
+							"project": "namespace/project",
+							"ref":     "1.2.3",
+						},
+						ContextProject: "namespace/current-project",
+						ContextSHA:     "abcd1234",
+					},
+				},
 			},
 		},
 	}