fix: Resolve path to keys (#185)

src/index.ts

@@ -22,6 +22,7 @@ import * as opn from 'open';
 import arrify = require('arrify');
 import destroyer = require('server-destroy');
 import {AddressInfo} from 'net';
+import {resolve} from 'path';
 
 const invalidRedirectUri = `The provided keyfile does not define a valid
 redirect URI. There must be at least one redirect URI defined, and this sample
@@ -59,7 +60,7 @@ export async function authenticate(
   }
 
   // eslint-disable-next-line @typescript-eslint/no-var-requires
-  const keyFile = require(options.keyfilePath);
+  const keyFile = require(resolve(options.keyfilePath));
   const keys = keyFile.installed || keyFile.web;
   if (!keys.redirect_uris || keys.redirect_uris.length === 0) {
     throw new Error(invalidRedirectUri);

test/test.index.ts

@@ -91,4 +91,24 @@ describe('🔑 authenticate', () => {
       /Cannot read/
     );
   });
+
+  it('should return credentials for a relative keyfilePath', async () => {
+    const access_token = 'fake-access-token';
+    const refresh_token = 'fake-refresh-token';
+    const scope = nock('https://oauth2.googleapis.com')
+      .post('/token')
+      .reply(200, {
+        access_token,
+        refresh_token,
+      });
+    const keyfilePath = 'test/fixtures/keys.json';
+
+    const client = await nla.authenticate({
+      keyfilePath: keyfilePath,
+      scopes: [],
+    });
+    scope.done();
+    assert.strictEqual(client.credentials.access_token, access_token);
+    assert.strictEqual(client.credentials.refresh_token, refresh_token);
+  });
 });