1 files changed, 111 insertions, 0 deletions
diff --git a/packages/browser/src/methods/startAssertion.test.ts b/packages/browser/src/methods/startAssertion.test.ts
new file mode 100644
index 0000000..b069f60
--- /dev/null
+++ b/packages/browser/src/methods/startAssertion.test.ts
@@ -0,0 +1,111 @@
+import base64js from 'base64-js';
+
+import { AssertionCredential, PublicKeyCredentialRequestOptionsJSON } from '@webauthntine/typescript-types';
+
+import toUint8Array from '../helpers/toUint8Array';
+import supportsWebauthn from '../helpers/supportsWebauthn';
+
+import startAssertion from './startAssertion';
+
+jest.mock('../helpers/supportsWebauthn');
+
+const mockNavigatorGet = (window.navigator.credentials.get as jest.Mock);
+const mockSupportsWebauthn = (supportsWebauthn as jest.Mock);
+
+const mockAttestationObject = 'mockAsse';
+const mockClientDataJSON = 'mockClie';
+const mockSignature = 'mockSign';
+const mockUserHandle = 'mockUser';
+
+const goodOpts1: PublicKeyCredentialRequestOptionsJSON = {
+  publicKey: {
+    challenge: 'fizz',
+    allowCredentials: [{
+      id: 'credId',
+      type: 'public-key',
+      transports: ['nfc'],
+    }],
+    timeout: 1,
+  },
+};
+
+beforeEach(() => {
+  mockNavigatorGet.mockReset();
+  mockSupportsWebauthn.mockReset();
+});
+
+test('should convert options before passing to navigator.credentials.get(...)', async (done) => {
+  mockSupportsWebauthn.mockReturnValue(true);
+
+  // Stub out a response so the method won't throw
+  mockNavigatorGet.mockImplementation((): Promise<any> => {
+    return new Promise((resolve) => {
+      resolve({ response: {} });
+    });
+  });
+
+  await startAssertion(goodOpts1);
+
+  const argsPublicKey = mockNavigatorGet.mock.calls[0][0].publicKey;
+
+  expect(argsPublicKey.challenge).toEqual(toUint8Array(goodOpts1.publicKey.challenge));
+  expect(argsPublicKey.allowCredentials[0].id).toEqual(
+    toUint8Array(goodOpts1.publicKey.allowCredentials[0].id),
+  );
+
+  done();
+});
+
+test('should return base64-encoded response values', async (done) => {
+  mockSupportsWebauthn.mockReturnValue(true);
+
+  mockNavigatorGet.mockImplementation((): Promise<AssertionCredential> => {
+    return new Promise((resolve) => {
+      resolve({
+        id: 'foobar',
+        rawId: toUint8Array('foobar'),
+        response: {
+          clientDataJSON: base64js.toByteArray(mockClientDataJSON),
+          authenticatorData: base64js.toByteArray(mockClientDataJSON),
+          signature: base64js.toByteArray(mockSignature),
+          userHandle: base64js.toByteArray(mockUserHandle),
+        },
+        getClientExtensionResults: () => ({}),
+        type: 'webauthn.get',
+      });
+    });
+  });
+
+  const response = await startAssertion(goodOpts1);
+
+  expect(response).toEqual({
+    base64AuthenticatorData: mockClientDataJSON,
+    base64ClientDataJSON: mockClientDataJSON,
+    base64Signature: mockSignature,
+    base64UserHandle: mockUserHandle,
+  });
+
+  done();
+})
+
+test('should throw error if WebAuthn isn\'t supported', async (done) => {
+  mockSupportsWebauthn.mockReturnValue(false);
+
+  await expect(startAssertion(goodOpts1)).rejects.toThrow('WebAuthn is not supported in this browser');
+
+  done();
+});
+
+test('should throw error if assertion is cancelled for some reason', async (done) => {
+  mockSupportsWebauthn.mockReturnValue(true);
+
+  mockNavigatorGet.mockImplementation((): Promise<null> => {
+    return new Promise((resolve) => {
+      resolve(null);
+    });
+  });
+
+  await expect(startAssertion(goodOpts1)).rejects.toThrow('Assertion was not completed');
+
+  done();
+});