1 files changed, 27 insertions, 0 deletions
diff --git a/packages/browser/src/helpers/browserSupportsWebAuthn.test.ts b/packages/browser/src/helpers/browserSupportsWebAuthn.test.ts
new file mode 100644
index 0000000..20d96c2
--- /dev/null
+++ b/packages/browser/src/helpers/browserSupportsWebAuthn.test.ts
@@ -0,0 +1,27 @@
+import { browserSupportsWebAuthn } from './browserSupportsWebAuthn';
+
+beforeEach(() => {
+  // @ts-ignore 2741
+  window.PublicKeyCredential = jest.fn().mockReturnValue(() => {});
+});
+
+test('should return true when browser supports WebAuthn', () => {
+  expect(browserSupportsWebAuthn()).toBe(true);
+});
+
+test('should return false when browser does not support WebAuthn', () => {
+  delete (window as any).PublicKeyCredential;
+  expect(browserSupportsWebAuthn()).toBe(false);
+});
+
+test('should return false when window is undefined', () => {
+  // Make window undefined as it is in node environments.
+  const windowSpy = jest.spyOn<any, 'window'>(global, 'window', 'get');
+  windowSpy.mockImplementation(() => undefined);
+
+  expect(window).toBe(undefined);
+  expect(browserSupportsWebAuthn()).toBe(false);
+
+  // Restore original window value.
+  windowSpy.mockRestore();
+});