(ci/lint) expose ci lint API (#293)

gitlab.go

@@ -209,6 +209,7 @@ type Client struct {
 	Issues               *IssuesService
 	Jobs                 *JobsService
 	Labels               *LabelsService
+	Lint                 *LintService
 	MergeRequests        *MergeRequestsService
 	Milestones           *MilestonesService
 	Namespaces           *NamespacesService
@@ -284,6 +285,7 @@ func newClient(httpClient *http.Client, tokenType tokenType, token string) *Clie
 	c.Issues = &IssuesService{client: c, timeStats: timeStats}
 	c.Jobs = &JobsService{client: c}
 	c.Labels = &LabelsService{client: c}
+	c.Lint = &LintService{client: c}
 	c.MergeRequests = &MergeRequestsService{client: c, timeStats: timeStats}
 	c.Milestones = &MilestonesService{client: c}
 	c.Namespaces = &NamespacesService{client: c}

lint.go

+package gitlab
+
+type LintService struct {
+	client *Client
+}
+
+type LintResponse struct {
+	Status string   `json:"status"`
+	Errors []string `json:"errors"`
+}
+
+// Lint validates .gitlab-ci content
+//
+// GitLab API docs: https://docs.gitlab.com/ce/api/lint.html
+func (l *LintService) Lint(content string, options ...OptionFunc) (*LintResponse, *Response, error) {
+	opts := struct {
+		Content string `json:"content"`
+	}{
+		Content: content,
+	}
+	req, err := l.client.NewRequest("POST", "ci/lint", opts, options)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var lint LintResponse
+	resp, err := l.client.Do(req, &lint)
+	if err != nil {
+		return nil, resp, err
+	}
+	return &lint, resp, nil
+}