KOGITO-1791: Saving new file should add automatically an extension

packages/desktop/__mocks__/electron.ts

@@ -17,15 +17,38 @@
 import * as electron from "electron";
 
 const mockIpcRendererEvents = new Map<string, (event?: electron.IpcRendererEvent, ...args: any[]) => void>();
+const mockIpcMainEvents = new Map<string, (event?: electron.IpcMainEvent, ...args: any[]) => void>();
 
 export const ipcRenderer = {
   on(channel: string, listener: (event?: electron.IpcRendererEvent, ...args: any[]) => void) {
     mockIpcRendererEvents.set(channel, listener);
   },
   send(channel: string, ...args: any[]) {
     mockIpcRendererEvents.get(channel)?.(undefined, ...args);
+    mockIpcMainEvents.get(channel)?.(undefined, ...args);
   },
   removeAllListeners(channel: string) {
     mockIpcRendererEvents.delete(channel);
   }
 };
+
+export const ipcMain = {
+  on(channel: string, listener: (event: electron.IpcMainEvent, ...args: any[]) => void) {
+    mockIpcMainEvents.set(channel, listener);
+  },
+  removeAllListeners(channel: string) {
+    mockIpcMainEvents.delete(channel);
+  }
+};
+
+export class BrowserWindow {
+  constructor(options?: electron.BrowserWindowConstructorOptions) { /**/ }
+};
+
+export const showSaveDialogMock = jest.fn((browserWindow: BrowserWindow, options: electron.SaveDialogOptions) => {
+  return Promise.resolve();
+});
+
+export const dialog = {
+  showSaveDialog: showSaveDialogMock
+};

packages/desktop/src/__tests__/backend/FileOperations.test.tsx

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { act } from "react-dom/test-utils";
+import * as electron from "electron";
+import { FileSaveActions } from "../../common/File";
+import { DesktopUserData } from "../../backend/DesktopUserData";
+import { Menu } from "../../backend/Menu";
+import { FileOperations } from "../../backend/FileOperations";
+import { showSaveDialogMock } from "../../../__mocks__/electron";
+
+beforeEach(() => {
+  document.execCommand = () => true;
+});
+
+jest.mock("../../backend/DesktopUserData", () => {
+  return {
+    DesktopUserData: jest.fn().mockImplementation()
+  };
+});
+
+jest.mock("../../backend/Menu", () => {
+  return {
+    Menu: jest.fn().mockImplementation()
+  };
+});
+
+describe("saveFile ipc event", () => {
+  test("check dialog for save file as operation", () => {
+    const window = new electron.BrowserWindow();
+    const userData = new DesktopUserData();
+    const menu = new Menu(window, userData);
+    const fileOperations = new FileOperations(window, menu, userData);
+
+    act(() =>
+      electron.ipcRenderer.send("saveFile", {
+        action: FileSaveActions.SAVE_AS,
+        file: {
+          fileType: "dmn",
+          fileContent: "content"
+        }
+      })
+    );
+
+    expect(showSaveDialogMock).toHaveBeenCalledTimes(1);
+    expect(showSaveDialogMock.mock.calls[0][0]).toEqual(window);
+    expect(showSaveDialogMock.mock.calls[0][1].defaultPath).toEqual("model.dmn");
+    expect(showSaveDialogMock.mock.calls[0][1].title).toEqual("Save file");
+    expect(showSaveDialogMock.mock.calls[0][1].filters!).toHaveLength(1);
+    expect(showSaveDialogMock.mock.calls[0][1].filters![0].name).toEqual("DMN");
+    expect(showSaveDialogMock.mock.calls[0][1].filters![0].extensions).toHaveLength(1);
+    expect(showSaveDialogMock.mock.calls[0][1].filters![0].extensions[0]).toEqual("dmn");
+  });
+});

packages/desktop/src/electron/FileOperations.ts → packages/desktop/src/backend/FileOperations.ts

@@ -42,6 +42,7 @@ export class FileOperations {
 
       dialog
         .showSaveDialog(this.window, {
+          defaultPath: "model." + data.file.fileType,
           title: "Save file",
           filters: [{ name: data.file.fileType.toUpperCase(), extensions: [data.file.fileType] }]
         })

packages/desktop/webpack.config.js

@@ -70,7 +70,7 @@ module.exports = [
     ...commonConfig,
     target: "electron-main",
     entry: {
-      index: "./src/electron/index.ts"
+      index: "./src/backend/index.ts"
     },
     plugins: [new CopyPlugin([{ from: "./build", to: "./build" }])],
     node: {