tmp

tests/.eslintrc.js

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+module.exports = {
+  env: {
+    node: true,
+  },
+  rules: {
+    '@typescript-eslint/no-var-requires': 'off',
+  },
+};

tests/app.spec.js

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+const {Application} = require('spectron');
+const {strict: assert} = require('assert');
+const {join} = require('path');
+
+const app = new Application({
+  path: require('electron'),
+  requireName: 'electronRequire',
+  args: [join(__dirname, '../dist/source')],
+});
+
+app.start()
+  .then(async () => {
+    const isVisible = await app.browserWindow.isVisible();
+    assert.ok(isVisible, 'Main window not visible');
+  })
+
+  .then(async () => {
+    const isDevtoolsOpen = await app.webContents.isDevToolsOpened();
+    assert.ok(!isDevtoolsOpen, 'DevTools opened');
+  })
+
+  .then(async function () {
+    // Get the window content
+    const content = await app.client.$('#app');
+    assert.notStrictEqual(await content.getHTML(), '<div id="app"></div>', 'Window content is empty');
+  })
+
+  .then(function () {
+    if (app && app.isRunning()) {
+      return app.stop();
+    }
+  })
+
+  .then(() => process.exit(0))
+
+  .catch(function (error) {
+    console.error(error);
+    if (app && app.isRunning()) {
+      app.stop();
+    }
+    process.exit(1);
+  });
+

tests/url.spec.js

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+#!/usr/bin/node
+
+
+const assert = require ('assert');
+const {format} = require ('url');
+const {join} = require ('path');
+
+const expected = format({
+  protocol: 'file',
+  pathname: join(__dirname, '../renderer/index.html'),
+  slashes: true,
+});
+
+const actual = new URL('renderer/index.html', 'file://' + __dirname);
+
+assert.strictEqual(actual.toString(), expected);