chore: test with 1st quadrant of the window

spec/lib/screen-helpers.ts

@@ -78,9 +78,13 @@ function areColorsSimilar (
 }
 
 function displayCenter (display: Electron.Display): Electron.Point {
+  // On macOS, we get system prompt to ask permission for screen capture
+  // taking up space in the center. As a workaround, choose
+  // area of the application window which is not covered by the prompt.
+  // TODO: Remove this when the prompt situation is resolved.
   return {
-    x: display.size.width / 2,
-    y: display.size.height / 2
+    x: display.size.width / (process.platform === 'darwin' ? 4 : 2),
+    y: display.size.height / (process.platform === 'darwin' ? 4 : 2)
   };
 }
 

spec/webview-spec.ts

@@ -1,4 +1,4 @@
-import { BrowserWindow, session, ipcMain, app, WebContents } from 'electron/main';
+import { BrowserWindow, session, ipcMain, app, WebContents, screen } from 'electron/main';
 
 import * as auth from 'basic-auth';
 import { expect } from 'chai';
@@ -782,6 +782,7 @@ describe('<webview> tag', function () {
 
     let w: BrowserWindow;
     before(async () => {
+      const display = screen.getPrimaryDisplay();
       w = new BrowserWindow({
         webPreferences: {
           webviewTag: true,
@@ -789,6 +790,7 @@ describe('<webview> tag', function () {
           contextIsolation: false
         }
       });
+      w.setBounds(display.bounds);
       await w.loadURL(`file://${fixtures}/pages/flex-webview.html`);
       w.setBackgroundColor(WINDOW_BACKGROUND_COLOR);
     });