App 2.19.2: Full screen for CarPlay (experiment)

Adds com.allgo.carplay.service to immersive.full in Android 9's policy_control setting when switched on, removes only that entry when off. Car build (system user) only. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6
2026-10-23 20:50:35 +02:00
parent 209a231511
commit 50217aef74
10 changed files with 219 additions and 14 deletions
@@ -0,0 +1,50 @@
+package com.evsuite.abrp;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+/** The policy_control value the CarPlay full-screen switch writes — pure JVM. */
+public class PolicyControlTest {
+
+    private static final String CP = "com.allgo.carplay.service";
+
+    @Test
+    public void unsetGainsOnlyOurEntryAndLosesItAgain() {
+        String on = PolicyControl.withFull(null, CP);
+        assertEquals("immersive.full=" + CP, on);
+        assertTrue(PolicyControl.hasFull(on, CP));
+        assertNull(PolicyControl.withoutFull(on, CP));
+    }
+
+    @Test
+    public void otherEntriesSurviveOnAndOff() {
+        String before = "immersive.status=com.a:immersive.full=com.b";
+        String on = PolicyControl.withFull(before, CP);
+        assertEquals("immersive.status=com.a:immersive.full=com.b," + CP, on);
+        assertEquals(before, PolicyControl.withoutFull(on, CP));
+    }
+
+    @Test
+    public void addingTwiceAddsOnce() {
+        String once = PolicyControl.withFull(null, CP);
+        assertEquals(once, PolicyControl.withFull(once, CP));
+    }
+
+    @Test
+    public void onlyAnExactPackageCounts() {
+        assertFalse(PolicyControl.hasFull("immersive.full=" + CP + ".other", CP));
+        assertFalse(PolicyControl.hasFull("immersive.status=" + CP, CP));
+        assertFalse(PolicyControl.hasFull(null, CP));
+        assertFalse(PolicyControl.hasFull("", CP));
+    }
+
+    @Test
+    public void removingWhatIsNotThereKeepsTheRest() {
+        assertEquals("immersive.status=com.a", PolicyControl.withoutFull("immersive.status=com.a", CP));
+        assertNull(PolicyControl.withoutFull(null, CP));
+    }
+}