chore: update Detox configuration for release mode signing and test build setup

Author: vonovak

.detoxrc.js

@@ -52,7 +52,7 @@ module.exports = {
       binaryPath:
         'example/android/app/build/outputs/apk/release/app-release.apk',
       build:
-        'export RCT_NO_LAUNCH_PACKAGER=true && (cd example/android && ./gradlew assembleRelease assembleReleaseAndroidTest)',
+        'export RCT_NO_LAUNCH_PACKAGER=true && (cd example/android && ./gradlew assembleRelease assembleAndroidTest -DtestBuildType=release)',
     },
   },
   configurations: {

example/android/build.gradle

@@ -47,6 +47,21 @@ allprojects {
                 testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
             }
 
+            // needed for release signing
+            androidExtension.signingConfigs {
+                test {
+                    keyAlias "androiddebugkey"
+                    keyPassword "android"
+                    storeFile file("debug.keystore")
+                    storePassword "android"
+                }
+            }
+
+            androidExtension.buildTypes.debug.signingConfig = androidExtension.signingConfigs.test
+            androidExtension.buildTypes.release.signingConfig = androidExtension.signingConfigs.test
+            androidExtension.testBuildType = System.getProperty('testBuildType', 'debug')
+            // end needed for release signing
+
             androidExtension.sourceSets.androidTest.java.srcDirs += "$rootDir/app/src/androidTest/java"
 
             project.dependencies {