[Qurany App][v2.5.1] The app crashed when I tried to do full/random test after submitting 0/zero as the start from ayah and end ayah

Related Informations

• Repository: https://github.com/MahmoudMabrok/QuranyApp
• Project Name: Qurany App
• My Submitted Issue: here
• My GitHub Account: here

Expected behavior

I expected that the app wouldn't crash after submitting "0" as the "start from ayah and end at ayah" for a full/random test.

Actual behavior

When I clicked on full/random test after entering "0" as the "start from and end at ayah" digit, then the app crashed.

How to reproduce

Here is every possible detail to reproduce the bug.

1. Open the app.
2. Go to the "Test" tab.
3. Give '0/zero' on the start from and end at ayah field.
4. Press on "FULL TEST" or "RANDOM TEST" and notice the bug.

• App version: 2.5.1
• Operating system: Android 6.0.1

Recording Of The Bug

LogCat

07-02 01:05:18.238 23615 23615 E AndroidRuntime: FATAL EXCEPTION: main

07-02 01:05:18.238 23615 23615 E AndroidRuntime: Process: education.mahmoud.quranyapp, PID: 23615

07-02 01:05:18.238 23615 23615 E AndroidRuntime: java.lang.NullPointerException: Attempt to read from field 'int education.mahmoud.quranyapp.data_layer.local.room.c.a' on a null object reference

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at education.mahmoud.quranyapp.feature.test_quran.TestFragment.a(Unknown Source)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at education.mahmoud.quranyapp.feature.test_quran.TestFragment.onbtnTestSaveRandom(Unknown Source)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at education.mahmoud.quranyapp.feature.test_quran.TestFragment_ViewBinding$2.a(Unknown Source)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at butterknife.a.a.onClick(Unknown Source)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.view.View.performClick(View.java:5714)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.widget.TextView.performClick(TextView.java:10932)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.view.View$PerformClick.run(View.java:22589)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.os.Handler.handleCallback(Handler.java:739)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:95)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:148)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:7325)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)

07-02 01:05:18.238 23615 23615 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)