[PLT-6676] Make OutgoingWebhook to fire when post has no text content but only attachment (#6935)

* make OutgoingWebhook to fire when post has no text content but only attachment

* update per comment and modify payload & test

api/post_test.go

@@ -177,8 +177,9 @@ func TestCreatePostWithCreateAt(t *testing.T) {
 
 func testCreatePostWithOutgoingHook(
 	t *testing.T,
-	hookContentType string,
-	expectedContentType string,
+	hookContentType, expectedContentType, message, triggerWord string,
+	fileIds []string,
+	triggerWhen int,
 ) {
 	th := Setup().InitSystemAdmin()
 	Client := th.SystemAdminClient
@@ -221,7 +222,8 @@ func testCreatePostWithOutgoingHook(
 			UserName:    user.Username,
 			PostId:      post.Id,
 			Text:        post.Message,
-			TriggerWord: strings.Fields(post.Message)[0],
+			TriggerWord: triggerWord,
+			FileIds:     strings.Join(post.FileIds, ","),
 		}
 
 		// depending on the Content-Type, we expect to find a JSON or form encoded payload
@@ -256,11 +258,17 @@ func testCreatePostWithOutgoingHook(
 	defer ts.Close()
 
 	// create an outgoing webhook, passing it the test server URL
-	triggerWord := "bingo"
+	var triggerWords []string
+	if triggerWord != "" {
+		triggerWords = []string{triggerWord}
+	}
+
 	hook = &model.OutgoingWebhook{
 		ChannelId:    channel.Id,
+		TeamId:       team.Id,
 		ContentType:  hookContentType,
-		TriggerWords: []string{triggerWord},
+		TriggerWords: triggerWords,
+		TriggerWhen:  triggerWhen,
 		CallbackURLs: []string{ts.URL},
 	}
 
@@ -271,10 +279,10 @@ func testCreatePostWithOutgoingHook(
 	}
 
 	// create a post to trigger the webhook
-	message := triggerWord + " lorem ipusm"
 	post = &model.Post{
 		ChannelId: channel.Id,
 		Message:   message,
+		FileIds:   fileIds,
 	}
 
 	if result, err := Client.CreatePost(post); err != nil {
@@ -290,25 +298,34 @@ func testCreatePostWithOutgoingHook(
 	select {
 	case ok := <-success:
 		if !ok {
-			t.Fatal("Test server was sent an invalid webhook.")
+			t.Fatal("Test server did send an invalid webhook.")
 		}
 	case <-time.After(time.Second):
-		t.Fatal("Timeout, test server wasn't sent the webhook.")
+		t.Fatal("Timeout, test server did not send the webhook.")
 	}
 }
 
 func TestCreatePostWithOutgoingHook_form_urlencoded(t *testing.T) {
-	testCreatePostWithOutgoingHook(t, "application/x-www-form-urlencoded", "application/x-www-form-urlencoded")
+	testCreatePostWithOutgoingHook(t, "application/x-www-form-urlencoded", "application/x-www-form-urlencoded", "triggerword lorem ipsum", "triggerword", []string{"file_id_1"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "application/x-www-form-urlencoded", "application/x-www-form-urlencoded", "triggerwordaaazzz lorem ipsum", "triggerword", []string{"file_id_1"}, app.TRIGGERWORDS_STARTS_WITH)
+	testCreatePostWithOutgoingHook(t, "application/x-www-form-urlencoded", "application/x-www-form-urlencoded", "", "", []string{"file_id_1"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "application/x-www-form-urlencoded", "application/x-www-form-urlencoded", "", "", []string{"file_id_1"}, app.TRIGGERWORDS_STARTS_WITH)
 }
 
 func TestCreatePostWithOutgoingHook_json(t *testing.T) {
-	testCreatePostWithOutgoingHook(t, "application/json", "application/json")
+	testCreatePostWithOutgoingHook(t, "application/json", "application/json", "triggerword lorem ipsum", "triggerword", []string{"file_id_1, file_id_2"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "application/json", "application/json", "triggerwordaaazzz lorem ipsum", "triggerword", []string{"file_id_1, file_id_2"}, app.TRIGGERWORDS_STARTS_WITH)
+	testCreatePostWithOutgoingHook(t, "application/json", "application/json", "triggerword lorem ipsum", "", []string{"file_id_1"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "application/json", "application/json", "triggerwordaaazzz lorem ipsum", "", []string{"file_id_1"}, app.TRIGGERWORDS_STARTS_WITH)
 }
 
 // hooks created before we added the ContentType field should be considered as
 // application/x-www-form-urlencoded
 func TestCreatePostWithOutgoingHook_no_content_type(t *testing.T) {
-	testCreatePostWithOutgoingHook(t, "", "application/x-www-form-urlencoded")
+	testCreatePostWithOutgoingHook(t, "", "application/x-www-form-urlencoded", "triggerword lorem ipsum", "triggerword", []string{"file_id_1"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "", "application/x-www-form-urlencoded", "triggerwordaaazzz lorem ipsum", "triggerword", []string{"file_id_1"}, app.TRIGGERWORDS_STARTS_WITH)
+	testCreatePostWithOutgoingHook(t, "", "application/x-www-form-urlencoded", "triggerword lorem ipsum", "", []string{"file_id_1, file_id_2"}, app.TRIGGERWORDS_EXACT_MATCH)
+	testCreatePostWithOutgoingHook(t, "", "application/x-www-form-urlencoded", "triggerwordaaazzz lorem ipsum", "", []string{"file_id_1, file_id_2"}, app.TRIGGERWORDS_STARTS_WITH)
 }
 
 func TestUpdatePost(t *testing.T) {