Executed test application and grabbed a screenshot of the test application

Author: shai-almog

.github/workflows/scripts-android.yml

@@ -22,4 +22,27 @@ jobs:
       - name: Build Android port
         run: ./scripts/build-android-port.sh -q -DskipTests
       - name: Build Hello Codename One Android app
+        id: build-android-app
         run: ./scripts/build-android-app.sh -q -DskipTests
+      - name: Enable KVM for Android emulator
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+      - name: Run Android instrumentation tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 31
+          arch: x86_64
+          target: google_apis
+          script: |
+            ./scripts/run-android-instrumentation-tests.sh "${{ steps.build-android-app.outputs.gradle_project_dir }}"
+      - name: Upload emulator screenshot
+        if: always()   # still collect it if tests fail
+        uses: actions/upload-artifact@v4
+        with:
+          name: emulator-screenshot
+          path: artifacts/*.png
+          if-no-files-found: warn
+          retention-days: 14
+          compression-level: 6

scripts/build-android-app.sh

@@ -201,6 +201,7 @@ xmlstarlet sel -N "$NS" -t -c "/mvn:project/mvn:build/mvn:plugins" -n "$ROOT_POM
 [ -f "$APP_DIR/build.sh" ] && chmod +x "$APP_DIR/build.sh"
 
 SETTINGS_FILE="$APP_DIR/common/codenameone_settings.properties"
+echo "codename1.arg.android.useAndroidX=true" >> "$SETTINGS_FILE"
 [ -f "$SETTINGS_FILE" ] || { ba_log "codenameone_settings.properties not found at $SETTINGS_FILE" >&2; exit 1; }
 
 # --- Read settings ---
@@ -265,6 +266,246 @@ if [ -z "$GRADLE_PROJECT_DIR" ]; then
   exit 1
 fi
 
+ba_log "Configuring instrumentation test sources in $GRADLE_PROJECT_DIR"
+
+# Ensure AndroidX flags in gradle.properties
+# --- BEGIN: robust Gradle patch for AndroidX tests ---
+GRADLE_PROPS="$GRADLE_PROJECT_DIR/gradle.properties"
+grep -q '^android.useAndroidX=' "$GRADLE_PROPS" 2>/dev/null || echo 'android.useAndroidX=true' >> "$GRADLE_PROPS"
+grep -q '^android.enableJetifier=' "$GRADLE_PROPS" 2>/dev/null || echo 'android.enableJetifier=true' >> "$GRADLE_PROPS"
+
+APP_BUILD_GRADLE="$GRADLE_PROJECT_DIR/app/build.gradle"
+ROOT_BUILD_GRADLE="$GRADLE_PROJECT_DIR/build.gradle"
+
+# Ensure repos in both root and app
+for F in "$ROOT_BUILD_GRADLE" "$APP_BUILD_GRADLE"; do
+  if [ -f "$F" ]; then
+    if ! grep -qE '^\s*repositories\s*{' "$F"; then
+      cat >> "$F" <<'EOS'
+
+repositories {
+    google()
+    mavenCentral()
+}
+EOS
+    else
+      grep -q 'google()' "$F" || sed -E -i '0,/repositories[[:space:]]*\{/s//repositories {\n    google()\n    mavenCentral()/' "$F"
+      grep -q 'mavenCentral()' "$F" || sed -E -i '0,/repositories[[:space:]]*\{/s//repositories {\n    google()\n    mavenCentral()/' "$F"
+    fi
+  fi
+done
+
+# Edit app/build.gradle
+python3 - "$APP_BUILD_GRADLE" <<'PY'
+import sys, re, pathlib
+p = pathlib.Path(sys.argv[1]); txt = p.read_text(); orig = txt; changed = False
+
+def strip_block(name, s):
+    return re.sub(rf'(?ms)^\s*{name}\s*\{{.*?\}}\s*', '', s)
+
+module_view = strip_block('buildscript', strip_block('pluginManagement', txt))
+
+# 1) android { compileSdkVersion/targetSdkVersion }
+def ensure_sdk(body):
+    # If android { ... } exists, update/insert inside defaultConfig and the android block
+    if re.search(r'(?m)^\s*android\s*\{', body):
+        # compileSdkVersion
+        if re.search(r'(?m)^\s*compileSdkVersion\s+\d+', body) is None:
+            body = re.sub(r'(?m)(^\s*android\s*\{)', r'\1\n    compileSdkVersion 33', body, count=1)
+        else:
+            body = re.sub(r'(?m)^\s*compileSdkVersion\s+\d+', '    compileSdkVersion 33', body)
+        # targetSdkVersion
+        if re.search(r'(?ms)^\s*defaultConfig\s*\{.*?^\s*\}', body):
+            dc = re.search(r'(?ms)^\s*defaultConfig\s*\{.*?^\s*\}', body)
+            block = dc.group(0)
+            if re.search(r'(?m)^\s*targetSdkVersion\s+\d+', block):
+                block2 = re.sub(r'(?m)^\s*targetSdkVersion\s+\d+', '        targetSdkVersion 33', block)
+            else:
+                block2 = re.sub(r'(\{\s*)', r'\1\n        targetSdkVersion 33', block, count=1)
+            body = body[:dc.start()] + block2 + body[dc.end():]
+        else:
+            body = re.sub(r'(?m)(^\s*android\s*\{)', r'\1\n    defaultConfig {\n        targetSdkVersion 33\n    }', body, count=1)
+    else:
+        # No android block at all: add minimal
+        body += '\n\nandroid {\n    compileSdkVersion 33\n    defaultConfig { targetSdkVersion 33 }\n}\n'
+    return body
+
+txt2 = ensure_sdk(txt)
+if txt2 != txt: txt = txt2; module_view = strip_block('buildscript', strip_block('pluginManagement', txt)); changed = True
+
+# 2) testInstrumentationRunner -> AndroidX
+if "androidx.test.runner.AndroidJUnitRunner" not in module_view:
+    t2, n = re.subn(r'(?m)^\s*testInstrumentationRunner\s*".*?"\s*$', '        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"', txt)
+    if n == 0:
+        t2, n = re.subn(r'(?m)(^\s*defaultConfig\s*\{)', r'\1\n        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"', txt, count=1)
+    if n == 0:
+        t2, n = re.subn(r'(?ms)(^\s*android\s*\{)', r'\1\n    defaultConfig {\n        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"\n    }', txt, count=1)
+    if n: txt = t2; module_view = strip_block('buildscript', strip_block('pluginManagement', txt)); changed = True
+
+# 3) remove legacy useLibrary lines
+t2, n = re.subn(r'(?m)^\s*useLibrary\s+\'android\.test\.(base|mock|runner)\'\s*$', '', txt)
+if n: txt = t2; module_view = strip_block('buildscript', strip_block('pluginManagement', txt)); changed = True
+
+# 4) deps: choose androidTestImplementation vs androidTestCompile
+uses_modern = re.search(r'(?m)^\s*(implementation|api|testImplementation|androidTestImplementation)\b', module_view) is not None
+conf = "androidTestImplementation" if uses_modern else "androidTestCompile"
+need = [
+    ("androidx.test.ext:junit:1.1.5", conf),   # AndroidJUnit4
+    ("androidx.test:runner:1.5.2", conf),
+    ("androidx.test:core:1.5.0", conf),
+    ("androidx.test.services:storage:1.4.2", conf),
+]
+to_add = [(c, k) for (c, k) in need if c not in module_view]
+
+if to_add:
+    block = "\n\ndependencies {\n" + "".join([f"    {k} \"{c}\"\n" for c, k in to_add]) + "}\n"
+    txt = txt.rstrip() + block
+    changed = True
+
+if changed and txt != orig:
+    if not txt.endswith("\n"): txt += "\n"
+    p.write_text(txt)
+    print(f"Patched app/build.gradle (SDK=33; deps via {conf})")
+else:
+    print("No changes needed in app/build.gradle")
+PY
+# --- END: robust Gradle patch ---
+
+echo "----- app/build.gradle tail -----"
+tail -n 80 "$APP_BUILD_GRADLE" | sed 's/^/| /'
+echo "---------------------------------"
+
+TEST_SRC_DIR="$GRADLE_PROJECT_DIR/app/src/androidTest/java/${PACKAGE_PATH}"
+mkdir -p "$TEST_SRC_DIR"
+TEST_CLASS="$TEST_SRC_DIR/HelloCodenameOneInstrumentedTest.java"
+cat >"$TEST_CLASS" <<'EOF'
+package @PACKAGE@;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.util.Base64;
+import android.util.DisplayMetrics;
+import android.view.View;
+
+import androidx.test.core.app.ActivityScenario;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.ByteArrayOutputStream;
+
+@RunWith(AndroidJUnit4.class)
+public class HelloCodenameOneInstrumentedTest {
+
+    private static void println(String s) { System.out.println(s); }
+
+    @Test
+    public void testUseAppContext_andEmitScreenshot() throws Exception {
+        Context ctx = ApplicationProvider.getApplicationContext();
+        String pkg = "@PACKAGE@";
+        Assert.assertEquals("Package mismatch", pkg, ctx.getPackageName());
+
+        // Resolve real launcher intent (don’t hard-code activity)
+        Intent launch = ctx.getPackageManager().getLaunchIntentForPackage(pkg);
+        if (launch == null) {
+            // Fallback MAIN/LAUNCHER inside this package
+            Intent q = new Intent(Intent.ACTION_MAIN);
+            q.addCategory(Intent.CATEGORY_LAUNCHER);
+            q.setPackage(pkg);
+            launch = q;
+        }
+        launch.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+        println("CN1SS:INFO: about to launch Activity");
+        byte[] pngBytes = null;
+
+        try (ActivityScenario<Activity> scenario = ActivityScenario.launch(launch)) {
+            // give the activity a tiny moment to layout
+            Thread.sleep(750);
+
+            println("CN1SS:INFO: activity launched");
+
+            final byte[][] holder = new byte[1][];
+            scenario.onActivity(activity -> {
+                try {
+                    View root = activity.getWindow().getDecorView().getRootView();
+                    int w = root.getWidth();
+                    int h = root.getHeight();
+                    if (w <= 0 || h <= 0) {
+                        DisplayMetrics dm = activity.getResources().getDisplayMetrics();
+                        w = Math.max(1, dm.widthPixels);
+                        h = Math.max(1, dm.heightPixels);
+                        int sw = View.MeasureSpec.makeMeasureSpec(w, View.MeasureSpec.EXACTLY);
+                        int sh = View.MeasureSpec.makeMeasureSpec(h, View.MeasureSpec.EXACTLY);
+                        root.measure(sw, sh);
+                        root.layout(0, 0, w, h);
+                        println("CN1SS:INFO: forced layout to " + w + "x" + h);
+                    } else {
+                        println("CN1SS:INFO: natural layout " + w + "x" + h);
+                    }
+
+                    Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
+                    Canvas c = new Canvas(bmp);
+                    root.draw(c);
+
+                    ByteArrayOutputStream baos = new ByteArrayOutputStream(Math.max(1024, w * h / 2));
+                    boolean ok = bmp.compress(Bitmap.CompressFormat.PNG, 100, baos);
+                    if (!ok) throw new RuntimeException("Bitmap.compress returned false");
+                    holder[0] = baos.toByteArray();
+                    println("CN1SS:INFO: png_bytes=" + holder[0].length);
+                } catch (Throwable t) {
+                    println("CN1SS:ERR: onActivity " + t);
+                    t.printStackTrace(System.out);
+                }
+            });
+
+            pngBytes = holder[0];
+        } catch (Throwable t) {
+            println("CN1SS:ERR: launch " + t);
+            t.printStackTrace(System.out);
+        }
+
+        if (pngBytes == null || pngBytes.length == 0) {
+            println("CN1SS:END");  // terminator for the runner parser
+            Assert.fail("Screenshot capture produced 0 bytes");
+            return;
+        }
+
+        // Chunk & emit (safe for Gradle/logcat capture)
+        String b64 = Base64.encodeToString(pngBytes, Base64.NO_WRAP);
+        final int CHUNK = 2000;
+        int count = 0;
+        for (int pos = 0; pos < b64.length(); pos += CHUNK) {
+            int end = Math.min(pos + CHUNK, b64.length());
+            System.out.println("CN1SS:" + String.format("%06d", pos) + ":" + b64.substring(pos, end));
+            count++;
+        }
+        println("CN1SS:INFO: chunks=" + count + " total_b64_len=" + b64.length());
+        System.out.println("CN1SS:END");
+        System.out.flush();
+    }
+}
+EOF
+sed -i "s|@PACKAGE@|$PACKAGE_NAME|g" "$TEST_CLASS"
+ba_log "Created instrumentation test at $TEST_CLASS"
+
+DEFAULT_ANDROID_TEST="$GRADLE_PROJECT_DIR/app/src/androidTest/java/com/example/myapplication2/ExampleInstrumentedTest.java"
+if [ -f "$DEFAULT_ANDROID_TEST" ]; then
+  rm -f "$DEFAULT_ANDROID_TEST"
+  ba_log "Removed default instrumentation stub at $DEFAULT_ANDROID_TEST"
+  DEFAULT_ANDROID_TEST_DIR="$(dirname "$DEFAULT_ANDROID_TEST")"
+  DEFAULT_ANDROID_TEST_PARENT="$(dirname "$DEFAULT_ANDROID_TEST_DIR")"
+  rmdir "$DEFAULT_ANDROID_TEST_DIR" 2>/dev/null || true
+  rmdir "$DEFAULT_ANDROID_TEST_PARENT" 2>/dev/null || true
+  rmdir "$(dirname "$DEFAULT_ANDROID_TEST_PARENT")" 2>/dev/null || true
+fi
+
 ba_log "Invoking Gradle build in $GRADLE_PROJECT_DIR"
 chmod +x "$GRADLE_PROJECT_DIR/gradlew"
 ORIGINAL_JAVA_HOME="$JAVA_HOME"
@@ -282,4 +523,13 @@ export JAVA_HOME="$ORIGINAL_JAVA_HOME"
 
 APK_PATH=$(find "$GRADLE_PROJECT_DIR" -path "*/outputs/apk/debug/*.apk" | head -n 1 || true)
 [ -n "$APK_PATH" ] || { ba_log "Gradle build completed but no APK was found" >&2; exit 1; }
-ba_log "Successfully built Android APK at $APK_PATH"
+ba_log "Successfully built Android APK at $APK_PATH"
+
+if [ -n "${GITHUB_OUTPUT:-}" ]; then
+  {
+    echo "gradle_project_dir=$GRADLE_PROJECT_DIR"
+    echo "apk_path=$APK_PATH"
+    echo "instrumentation_test_class=$PACKAGE_NAME.HelloCodenameOneInstrumentedTest"
+  } >> "$GITHUB_OUTPUT"
+  ba_log "Published GitHub Actions outputs for downstream steps"
+fi