fix: Bug - No android app icon

e2e/tests/mobile/android-app-icon.spec.ts

@@ -0,0 +1,107 @@
+import { createHash } from 'node:crypto';
+import { existsSync, readFileSync } from 'node:fs';
+import { join } from 'node:path';
+
+import sharp from 'sharp';
+
+import { test, expect } from '../../fixtures/base';
+import {
+  BRAND_LAUNCHER_BACKGROUND_COLOR,
+  findMissingLauncherResources,
+  findStockCapacitorResources,
+  isBrandLauncherBackgroundColor,
+  readAdaptiveIconBackgroundColor,
+  REQUIRED_LAUNCHER_ICON_FILES,
+  REQUIRED_SPLASH_FILES
+} from '../../../toju-app/src/app/infrastructure/mobile/logic/mobile-android-launcher-icon.rules';
+
+/**
+ * Regression coverage for: "No android app icon" - the Capacitor shell shipped
+ * the stock Ionic placeholder launcher icon instead of the Toju brand mark.
+ *
+ * A native launcher icon cannot be asserted through a running browser, so this
+ * spec verifies the committed Android resources directly: every density is
+ * present, none still match a stock Capacitor placeholder, the adaptive-icon
+ * background is the brand purple, and the generated bitmaps actually contain the
+ * brand mark (white cat on a purple disc). This is deterministic - no emulator,
+ * no timing - so it stays reliable in CI.
+ */
+
+const REPO_ROOT = join(__dirname, '..', '..', '..');
+const RES_DIR = join(REPO_ROOT, 'toju-app', 'android', 'app', 'src', 'main', 'res');
+const BRAND_PURPLE = { r: 0x4a, g: 0x21, b: 0x7a };
+const WHITE = { r: 255, g: 255, b: 255 };
+const COLOR_TOLERANCE = 24;
+
+function sha256(resRelativePath: string): string {
+  return createHash('sha256').update(readFileSync(join(RES_DIR, resRelativePath)))
+    .digest('hex');
+}
+
+function colorDistance(
+  left: { r: number; g: number; b: number },
+  right: { r: number; g: number; b: number }
+): number {
+  return Math.max(Math.abs(left.r - right.r), Math.abs(left.g - right.g), Math.abs(left.b - right.b));
+}
+
+async function samplePixel(
+  resRelativePath: string,
+  xRatio: number,
+  yRatio: number
+): Promise<{ r: number; g: number; b: number }> {
+  const { data, info } = await sharp(join(RES_DIR, resRelativePath)).raw()
+    .toBuffer({ resolveWithObject: true });
+  const x = Math.min(info.width - 1, Math.floor(info.width * xRatio));
+  const y = Math.min(info.height - 1, Math.floor(info.height * yRatio));
+  const offset = (y * info.width + x) * info.channels;
+
+  return { r: data[offset], g: data[offset + 1], b: data[offset + 2] };
+}
+
+test.describe('Android brand app icon', () => {
+  test('ships a launcher icon and splash for every required density', () => {
+    const allRequired = [...REQUIRED_LAUNCHER_ICON_FILES, ...REQUIRED_SPLASH_FILES];
+    const present = allRequired.filter((file) => existsSync(join(RES_DIR, file)));
+
+    expect(findMissingLauncherResources(present)).toEqual([]);
+  });
+
+  test('replaces every stock Capacitor placeholder with the brand asset', () => {
+    const allRequired = [...REQUIRED_LAUNCHER_ICON_FILES, ...REQUIRED_SPLASH_FILES];
+    const hashByFile = Object.fromEntries(
+      allRequired.filter((file) => existsSync(join(RES_DIR, file))).map((file) => [file, sha256(file)])
+    );
+
+    expect(findStockCapacitorResources(hashByFile)).toEqual([]);
+  });
+
+  test('uses the brand purple as the adaptive-icon background', () => {
+    const valuesXml = readFileSync(join(RES_DIR, 'values', 'ic_launcher_background.xml'), 'utf8');
+    const color = readAdaptiveIconBackgroundColor(valuesXml);
+
+    expect(color).not.toBe('#FFFFFF');
+    expect(isBrandLauncherBackgroundColor(color)).toBe(true);
+    expect(color?.toLowerCase()).toBe(BRAND_LAUNCHER_BACKGROUND_COLOR.toLowerCase());
+  });
+
+  test('renders the brand mark (white cat on a purple disc) in the launcher bitmap', async () => {
+    const launcher = 'mipmap-xxxhdpi/ic_launcher.png';
+    const ringTop = await samplePixel(launcher, 0.5, 0.12);
+    const ringLeft = await samplePixel(launcher, 0.12, 0.5);
+    const faceCenter = await samplePixel(launcher, 0.5, 0.5);
+
+    expect(colorDistance(ringTop, BRAND_PURPLE)).toBeLessThanOrEqual(COLOR_TOLERANCE);
+    expect(colorDistance(ringLeft, BRAND_PURPLE)).toBeLessThanOrEqual(COLOR_TOLERANCE);
+    expect(colorDistance(faceCenter, WHITE)).toBeLessThanOrEqual(COLOR_TOLERANCE);
+  });
+
+  test('renders the splash art as the brand mark centred on a purple field', async () => {
+    const splash = 'drawable-port-xhdpi/splash.png';
+    const corner = await samplePixel(splash, 0.04, 0.04);
+    const center = await samplePixel(splash, 0.5, 0.5);
+
+    expect(colorDistance(corner, BRAND_PURPLE)).toBeLessThanOrEqual(COLOR_TOLERANCE);
+    expect(colorDistance(center, WHITE)).toBeLessThanOrEqual(COLOR_TOLERANCE);
+  });
+});