fix: return error if both run:/uses: keys are used (#593)

fixes https://github.com/nektos/act/issues/536

pkg/model/workflow.go

@@ -292,11 +292,17 @@ const (
 
 	// StepTypeUsesActionRemote is all steps that have a `uses` that is a reference to a github repo
 	StepTypeUsesActionRemote
+
+	// StepTypeInvalid is for steps that have invalid step action
+	StepTypeInvalid
 )
 
 // Type returns the type of the step
 func (s *Step) Type() StepType {
 	if s.Run != "" {
+		if s.Uses != "" {
+			return StepTypeInvalid
+		}
 		return StepTypeRun
 	} else if strings.HasPrefix(s.Uses, "docker://") {
 		return StepTypeUsesDockerURL

pkg/model/workflow_test.go

@@ -98,3 +98,35 @@ jobs:
 	assert.Contains(t, workflow.Jobs["test2"].Container().Image, "nginx:latest")
 	assert.Contains(t, workflow.Jobs["test2"].Container().Env["foo"], "bar")
 }
+
+func TestReadWorkflow_StepsTypes(t *testing.T) {
+	yaml := `
+name: invalid step definition
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: test1
+        uses: actions/checkout@v2
+        run: echo
+      - name: test2
+        run: echo
+      - name: test3
+        uses: actions/checkout@v2
+      - name: test4
+        uses: docker://nginx:latest
+      - name: test5
+        uses: ./local-action
+`
+
+	workflow, err := ReadWorkflow(strings.NewReader(yaml))
+	assert.NoError(t, err, "read workflow should succeed")
+	assert.Len(t, workflow.Jobs, 1)
+	assert.Len(t, workflow.Jobs["test"].Steps, 5)
+	assert.Equal(t, workflow.Jobs["test"].Steps[0].Type(), StepTypeInvalid)
+	assert.Equal(t, workflow.Jobs["test"].Steps[1].Type(), StepTypeRun)
+	assert.Equal(t, workflow.Jobs["test"].Steps[2].Type(), StepTypeUsesActionRemote)
+	assert.Equal(t, workflow.Jobs["test"].Steps[3].Type(), StepTypeUsesDockerURL)
+	assert.Equal(t, workflow.Jobs["test"].Steps[4].Type(), StepTypeUsesActionLocal)
+}

pkg/runner/step_context.go

@@ -87,6 +87,8 @@ func (sc *StepContext) Executor() common.Executor {
 			sc.setupAction(actionDir, remoteAction.Path),
 			sc.runAction(actionDir, remoteAction.Path),
 		)
+	case model.StepTypeInvalid:
+		return common.NewErrorExecutor(fmt.Errorf("Invalid run/uses syntax for job:%s step:%+v", rc.Run, step))
 	}
 
 	return common.NewErrorExecutor(fmt.Errorf("Unable to determine how to run job:%s step:%+v", rc.Run, step))

pkg/runner/step_context_test.go

@@ -12,10 +12,13 @@ func TestStepContextExecutor(t *testing.T) {
 		"ubuntu-latest": "node:12.20.1-buster-slim",
 	}
 	tables := []TestJobFileInfo{
+		{"testdata", "uses-and-run-in-one-step", "push", "Invalid run/uses syntax for job:test step:Test", platforms, "linux/amd64"},
 		{"testdata", "uses-github-empty", "push", "Expected format {org}/{repo}[/path]@ref", platforms, "linux/amd64"},
 		{"testdata", "uses-github-noref", "push", "Expected format {org}/{repo}[/path]@ref", platforms, "linux/amd64"},
 		{"testdata", "uses-github-root", "push", "", platforms, "linux/amd64"},
 		{"testdata", "uses-github-path", "push", "", platforms, "linux/amd64"},
+
+		{"testdata", "uses-and-run-in-one-step", "push", "Invalid run/uses syntax for job:test step:Test", platforms, "linux/arm64"},
 		{"testdata", "uses-github-empty", "push", "Expected format {org}/{repo}[/path]@ref", platforms, "linux/arm64"},
 		{"testdata", "uses-github-noref", "push", "Expected format {org}/{repo}[/path]@ref", platforms, "linux/arm64"},
 		{"testdata", "uses-github-root", "push", "", platforms, "linux/arm64"},

pkg/runner/testdata/uses-and-run-in-one-step/push.yml

@@ -0,0 +1,10 @@
+name: uses-and-run-in-one-step
+on: push
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Test
+        run: echo
+        uses: actions/checkout@v2