feat: --validate and --strict (#2717)

* feat: `--validate` and `--strict`

* fix missing changes

* add test for strict validate

---------

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

cmd/input.go

@@ -62,6 +62,8 @@ type Input struct {
 	useNewActionCache                  bool
 	localRepository                    []string
 	listOptions                        bool
+	validate                           bool
+	strict                             bool
 	concurrentJobs                     int
 }
 

cmd/root.go

@@ -66,6 +66,8 @@ func createRootCommand(ctx context.Context, input *Input, version string) *cobra
 	}
 
 	rootCmd.Flags().BoolP("watch", "w", false, "watch the contents of the local repo and run when files change")
+	rootCmd.Flags().BoolVar(&input.validate, "validate", false, "validate workflows")
+	rootCmd.Flags().BoolVar(&input.strict, "strict", false, "use strict workflow schema")
 	rootCmd.Flags().BoolP("list", "l", false, "list workflows")
 	rootCmd.Flags().BoolP("graph", "g", false, "draw workflows")
 	rootCmd.Flags().StringP("job", "j", "", "run a specific job ID")
@@ -446,7 +448,7 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
 		matrixes := parseMatrix(input.matrix)
 		log.Debugf("Evaluated matrix inclusions: %v", matrixes)
 
-		planner, err := model.NewWorkflowPlanner(input.WorkflowsPath(), input.noWorkflowRecurse)
+		planner, err := model.NewWorkflowPlanner(input.WorkflowsPath(), input.noWorkflowRecurse, input.strict)
 		if err != nil {
 			return err
 		}
@@ -462,6 +464,11 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
 			return err
 		}
 
+		// check if we should just validate the workflows
+		if input.validate {
+			return err
+		}
+
 		// check if we should just draw the graph
 		graph, err := cmd.Flags().GetBool("graph")
 		if err != nil {