Field Testing Using ADB Commands Notes By ShariqSP

Field Testing Using ADB Commands

1. Setting Up for Field Testing

Field testing involves testing an app or device under real-world conditions such as different network environments, locations, and user scenarios. ADB commands provide a powerful way to simulate and monitor field conditions.

Ensure ADB is installed and configured correctly.
Connect your device to your computer and verify the connection:
```
adb devices
```
Enable USB Debugging on your device:
- Navigate to Settings > Developer Options and enable USB Debugging.

2. Simulating Network Conditions

Field testing often involves testing under different network conditions. ADB allows you to simulate these scenarios:

Monitor Current Network State:
```
adb shell dumpsys connectivity
```
- This displays details about the current network status, including the connected type (Wi-Fi, LTE, etc.).
Simulate Airplane Mode:
```
adb shell settings put global airplane_mode_on 1
```
- This turns on airplane mode. To turn it off, replace 1 with 0.
Simulate No Network:
```
adb shell svc data disable
```
- This disables mobile data. To enable it again, use:
```
adb shell svc data enable
```

Simulate Switching Networks:

adb shell am start -n com.android.settings/.Settings\$DataUsageSummaryActivity

This opens network settings for manual changes.

Simulate Network Throttling:
```
adb shell "tc qdisc add dev wlan0 root netem delay 200ms loss 10%"
```
- This adds a 200ms delay and 10% packet loss to Wi-Fi. Replace wlan0 with the appropriate interface for mobile data (rmnet0).
- To reset, use:
```
adb shell "tc qdisc del dev wlan0 root"
```

3. Location Simulation for Field Testing

Test app behavior in different geographic locations using mock locations:

Enable Mock Locations:
```
adb shell settings put secure mock_location 1
```
- Ensure your testing app has mock location permissions.
Simulate a Specific Location:
```
adb shell am startservice -a com.google.android.gms.location.ACTION_MOCK_LOCATION -e lat 12.9716 -e lon 77.5946
```
- This simulates the location for Bangalore, India (latitude: 12.9716, longitude: 77.5946).
- Update the lat and lon values to test other locations.

4. Testing Battery Performance in the Field

Monitor battery performance under real-world conditions:

Monitor Battery Status:
```
adb shell dumpsys battery
```
- This displays details like charge level, voltage, and temperature.
Simulate Low Battery:
```
adb shell dumpsys battery set level 10
```
- This sets the battery level to 10% for testing low-battery behavior.
- To reset, use:
```
adb shell dumpsys battery reset
```

5. Practical Field Testing Scenarios

Field testing ensures your app performs well under real-world conditions. Here are some scenarios:

Network Change Testing: Simulate network drops or switches (e.g., Wi-Fi to LTE) and ensure app sessions remain active.
Battery Optimization Testing: Test app behavior under low-battery conditions, ensuring critical features work as expected.
Geographic Restrictions: Simulate different locations to test region-specific app features (e.g., currency display, localized offers).
Offline Functionality: Disable networks to test app behavior in offline mode.
Performance Testing: Throttle networks to simulate slow connections and validate app responsiveness.

ADB provides a powerful way to simulate and control real-world testing environments, enabling thorough field testing of mobile applications.