diff --git a/packages/rtn-web-browser/jest.config.js b/packages/rtn-web-browser/jest.config.js
index 3a0e3340f9f..fd22133a060 100644
--- a/packages/rtn-web-browser/jest.config.js
+++ b/packages/rtn-web-browser/jest.config.js
@@ -2,10 +2,10 @@ module.exports = {
 	...require('../../jest.config'),
 	coverageThreshold: {
 		global: {
-			branches: 100,
-			functions: 100,
-			lines: 100,
-			statements: 100,
+			branches: 25,
+			functions: 25,
+			lines: 35,
+			statements: 35,
 		},
 	},
 };
diff --git a/packages/rtn-web-browser/package.json b/packages/rtn-web-browser/package.json
index 3a9d7917bd2..929a8988a41 100644
--- a/packages/rtn-web-browser/package.json
+++ b/packages/rtn-web-browser/package.json
@@ -11,7 +11,7 @@
 		"access": "public"
 	},
 	"scripts": {
-		"test": "echo 'no-op'",
+		"test": "jest -w 1 --coverage --logHeapUsage",
 		"test:android": "./android/gradlew test -p ./android",
 		"build-with-test": "npm run clean && npm test && tsc",
 		"build:esm-cjs": "rollup --forceExit -c rollup.config.mjs",
diff --git a/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts b/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts
new file mode 100644
index 00000000000..afbb034ff6e
--- /dev/null
+++ b/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts
@@ -0,0 +1,78 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { Platform } from 'react-native';
+
+import { nativeModule } from '../../nativeModule';
+import { isChromebook, openAuthSessionAsync } from '../openAuthSessionAsync';
+
+jest.mock('react-native', () => ({
+	Platform: { OS: 'ios' },
+	AppState: { addEventListener: jest.fn() },
+	Linking: { addEventListener: jest.fn() },
+	NativeModules: {},
+}));
+
+jest.mock('../../nativeModule', () => ({
+	nativeModule: { openAuthSessionAsync: jest.fn() },
+}));
+
+const mockPlatform = Platform as jest.Mocked<typeof Platform>;
+const mockNativeModule = nativeModule as jest.Mocked<typeof nativeModule>;
+
+describe('openAuthSessionAsync', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		mockPlatform.OS = 'ios';
+	});
+
+	describe('isChromebook', () => {
+		it('returns false by default', async () => {
+			const result = await isChromebook();
+			expect(result).toBe(false);
+		});
+	});
+
+	describe('openAuthSessionAsync', () => {
+		it('enforces HTTPS on URLs', async () => {
+			mockNativeModule.openAuthSessionAsync.mockResolvedValue('result');
+
+			await openAuthSessionAsync('http://example.com', ['myapp://callback']);
+
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://callback',
+				false,
+			);
+		});
+
+		it('calls iOS implementation', async () => {
+			mockNativeModule.openAuthSessionAsync.mockResolvedValue('result');
+
+			const result = await openAuthSessionAsync(
+				'https://example.com',
+				['myapp://callback'],
+				true,
+			);
+
+			expect(result).toBe('result');
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://callback',
+				true,
+			);
+		});
+
+		it('finds first non-web URL for redirect', async () => {
+			const redirectUrls = ['https://web.com', 'myapp://deep'];
+
+			await openAuthSessionAsync('https://example.com', redirectUrls);
+
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://deep',
+				false,
+			);
+		});
+	});
+});