Resuming the app with a url causes detox to hang and time-out

[d4vidi]

Description

On Android, resuming a background app with a supported url (provided as an arg to launchApp) results in a timeout. This distinctively happens in case the app activity has been set launchMode=singleInstance.

     Error: Error: Could not launch intent Intent { act=android.intent.action.VIEW dat=mytestscheme://test-string flg=0x10000000 cmp=com.somevendor/com.example.MainActivity } within 45 seconds. Perhaps the main thread has not gone idle within a reasonable amount of time? There could be an animation or something constantly repainting the screen. Or the activity is doing network calls on creation? See the threaddump logs. For your reference the last time the event queue was idle before your activity launch request was 1548160484943 and now the last time the queue went idle was: 1548160534341. If these numbers are the same your activity might be hogging the event queue.
      at Client.execute (node_modules/detox/src/client/Client.js:80:28)
      at InvocationManager.execute (node_modules/detox/src/invoke.js:11:33)
      at EmulatorDriver.deliverPayload (node_modules/detox/src/devices/drivers/AndroidDriver.js:145:36)
      at Device.launchApp (node_modules/detox/src/devices/Device.js:87:33)
      at Context.it.only (e2e/15.urls.test.js:31:18)
      at <anonymous>

The timeout takes place albeit the activity and expected content clearly residing in the foreground.

Steps to Reproduce

The following combination of a test and a main-activity definition will result in the aforementioned timeout:

AndroidManifest.xml:

     <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:launchMode="singleInstance">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT" />
            <data android:scheme="mytestscheme"/>
        </intent-filter>
      </activity>

Test (JS):

const url = 'mytestscheme://test-string';
await device.launchApp({newInstance: true});
await device.sendToHome();
await device.launchApp({newInstance: false, url: url});

Detox, Node, Device, Xcode and macOS Versions

• Detox: 9.1.2
• React Native: 0.51
• Node: 9.11.2
• Device: Pixel 2 API 28 emulator
• IDE: Android Studio 3.3
• macOS: 10.13.6 (HS)

Device and verbose Detox logs

See description.