add test of logs when linkign new device without anything

integration_test/common.js

@@ -630,6 +630,19 @@ module.exports = {
     }
   },
 
+  /**
+   * Search for a string in logs
+   * @param {*} app the render logs to search in
+   * @param {*} str the string to search (not regex)
+   * Note: getRenderProcessLogs() clears the app logs each calls.
+   */
+  async logsContains(renderLogs, str) {
+    const found = renderLogs.some(log => log.message.includes(str));
+
+    // eslint-disable-next-line no-unused-expressions
+    chai.expect(found, `'${str}' not found in logs but was expected`).to.be.true;
+  },
+
   // async killStubSnodeServer() {
   //   return new Promise(resolve => {
   //     exec(

integration_test/link_device_test.js

@@ -45,4 +45,23 @@ describe('Link Device', function() {
     await common.timeout(1000);
     await common.triggerUnlinkApp2FromApp(app, app2);
   });
+
+  describe('linkDevice:sync no groups, closed group, nor open groups', async () => {
+    await common.linkApp2ToApp(app, app2, common.TEST_PUBKEY1);
+    await common.timeout(2000);
+
+    // get logs at this stage (getRenderProcessLogs() clears the app logs)
+    const secondaryRenderLogs = await app2.client.getRenderProcessLogs();
+    // pairing request message sent from secondary to primary pubkey
+    await common.logsContains(secondaryRenderLogs, `Sending pairing-request:pairing-request message to ${common.TEST_PUBKEY1}`);
+
+    const primaryRenderLogs = await app.client.getRenderProcessLogs();
+    // primary grant pairing request
+    await common.logsContains(primaryRenderLogs, 'Sending pairing-request:pairing-request message to OUR SECONDARY PUBKEY');
+
+    // no friends, no closed groups, no open groups. we should see those message sync in the log
+    await common.logsContains(primaryRenderLogs, 'No closed group to sync.');
+    await common.logsContains(primaryRenderLogs, 'No open groups to sync');
+    await common.logsContains(primaryRenderLogs, 'No contacts to sync.');
+  });
 });