Clarify how IME ID is treated in ImeSubtypeListItem#compareTo()

This is a preparation to remove dependency on TreeMap from
InputMethodAndSubtypeList#getSortedInputMethodAndSubtypeList().

This CL itself must not have any behavior change.

Bug: 64612471
Test: atest InputMethodSubtypeSwitchingControllerTest
Change-Id: I5684bbbb3b223c4e6cc7892b2620fb91356b7037
diff --git a/services/tests/servicestests/src/com/android/server/inputmethod/InputMethodSubtypeSwitchingControllerTest.java b/services/tests/servicestests/src/com/android/server/inputmethod/InputMethodSubtypeSwitchingControllerTest.java
index 910d433..9424461 100644
--- a/services/tests/servicestests/src/com/android/server/inputmethod/InputMethodSubtypeSwitchingControllerTest.java
+++ b/services/tests/servicestests/src/com/android/server/inputmethod/InputMethodSubtypeSwitchingControllerTest.java
@@ -20,6 +20,7 @@
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
+import android.content.ComponentName;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.ResolveInfo;
 import android.content.pm.ServiceInfo;
@@ -99,17 +100,18 @@
         }
     }
 
-    private static ImeSubtypeListItem createDummyItem(String imeName,
-            String subtypeName, String subtypeLocale, int subtypeIndex, String systemLocale) {
+    private static ImeSubtypeListItem createDummyItem(ComponentName imeComponentName,
+            String imeName, String subtypeName, String subtypeLocale, int subtypeIndex,
+            String systemLocale) {
         final ResolveInfo ri = new ResolveInfo();
         final ServiceInfo si = new ServiceInfo();
         final ApplicationInfo ai = new ApplicationInfo();
-        ai.packageName = DUMMY_PACKAGE_NAME;
+        ai.packageName = imeComponentName.getPackageName();
         ai.enabled = true;
         si.applicationInfo = ai;
         si.enabled = true;
-        si.packageName = DUMMY_PACKAGE_NAME;
-        si.name = imeName;
+        si.packageName = imeComponentName.getPackageName();
+        si.name = imeComponentName.getClassName();
         si.exported = true;
         si.nonLocalizedLabel = DUMMY_IME_LABEL;
         ri.serviceInfo = si;
@@ -367,52 +369,56 @@
 
     @Test
     public void testImeSubtypeListComparator() throws Exception {
+        final ComponentName imeX1 = new ComponentName("com.example.imeX", "Ime1");
+        final ComponentName imeX2 = new ComponentName("com.example.imeX", "Ime2");
+        final ComponentName imeY1 = new ComponentName("com.example.imeY", "Ime1");
+        final ComponentName imeZ1 = new ComponentName("com.example.imeZ", "Ime1");
         {
             final List<ImeSubtypeListItem> items = Arrays.asList(
                     // Subtypes of IME "X".
                     // Subtypes that has the same locale of the system's.
-                    createDummyItem("X", "E", "en_US", 0, "en_US"),
-                    createDummyItem("X", "Z", "en_US", 3, "en_US"),
-                    createDummyItem("X", "", "en_US", 6, "en_US"),
+                    createDummyItem(imeX1, "X", "E", "en_US", 0, "en_US"),
+                    createDummyItem(imeX1, "X", "Z", "en_US", 3, "en_US"),
+                    createDummyItem(imeX1, "X", "", "en_US", 6, "en_US"),
                     // Subtypes that has the same language of the system's.
-                    createDummyItem("X", "E", "en", 1, "en_US"),
-                    createDummyItem("X", "Z", "en", 4, "en_US"),
-                    createDummyItem("X", "", "en", 7, "en_US"),
+                    createDummyItem(imeX1, "X", "E", "en", 1, "en_US"),
+                    createDummyItem(imeX1, "X", "Z", "en", 4, "en_US"),
+                    createDummyItem(imeX1, "X", "", "en", 7, "en_US"),
                     // Subtypes that has different language than the system's.
-                    createDummyItem("X", "A", "hi_IN", 27, "en_US"),
-                    createDummyItem("X", "E", "ja", 2, "en_US"),
-                    createDummyItem("X", "Z", "ja", 5, "en_US"),
-                    createDummyItem("X", "", "ja", 8, "en_US"),
+                    createDummyItem(imeX1, "X", "A", "hi_IN", 27, "en_US"),
+                    createDummyItem(imeX1, "X", "E", "ja", 2, "en_US"),
+                    createDummyItem(imeX1, "X", "Z", "ja", 5, "en_US"),
+                    createDummyItem(imeX1, "X", "", "ja", 8, "en_US"),
 
                     // Subtypes of IME "Y".
                     // Subtypes that has the same locale of the system's.
-                    createDummyItem("Y", "E", "en_US", 9, "en_US"),
-                    createDummyItem("Y", "Z", "en_US", 12, "en_US"),
-                    createDummyItem("Y", "", "en_US", 15, "en_US"),
+                    createDummyItem(imeY1, "Y", "E", "en_US", 9, "en_US"),
+                    createDummyItem(imeY1, "Y", "Z", "en_US", 12, "en_US"),
+                    createDummyItem(imeY1, "Y", "", "en_US", 15, "en_US"),
                     // Subtypes that has the same language of the system's.
-                    createDummyItem("Y", "E", "en", 10, "en_US"),
-                    createDummyItem("Y", "Z", "en", 13, "en_US"),
-                    createDummyItem("Y", "", "en", 16, "en_US"),
+                    createDummyItem(imeY1, "Y", "E", "en", 10, "en_US"),
+                    createDummyItem(imeY1, "Y", "Z", "en", 13, "en_US"),
+                    createDummyItem(imeY1, "Y", "", "en", 16, "en_US"),
                     // Subtypes that has different language than the system's.
-                    createDummyItem("Y", "A", "hi_IN", 28, "en_US"),
-                    createDummyItem("Y", "E", "ja", 11, "en_US"),
-                    createDummyItem("Y", "Z", "ja", 14, "en_US"),
-                    createDummyItem("Y", "", "ja", 17, "en_US"),
+                    createDummyItem(imeY1, "Y", "A", "hi_IN", 28, "en_US"),
+                    createDummyItem(imeY1, "Y", "E", "ja", 11, "en_US"),
+                    createDummyItem(imeY1, "Y", "Z", "ja", 14, "en_US"),
+                    createDummyItem(imeY1, "Y", "", "ja", 17, "en_US"),
 
-                    // Subtypes of IME "".
+                    // Subtypes of IME Z.
                     // Subtypes that has the same locale of the system's.
-                    createDummyItem("", "E", "en_US", 18, "en_US"),
-                    createDummyItem("", "Z", "en_US", 21, "en_US"),
-                    createDummyItem("", "", "en_US", 24, "en_US"),
+                    createDummyItem(imeZ1, "", "E", "en_US", 18, "en_US"),
+                    createDummyItem(imeZ1, "", "Z", "en_US", 21, "en_US"),
+                    createDummyItem(imeZ1, "", "", "en_US", 24, "en_US"),
                     // Subtypes that has the same language of the system's.
-                    createDummyItem("", "E", "en", 19, "en_US"),
-                    createDummyItem("", "Z", "en", 22, "en_US"),
-                    createDummyItem("", "", "en", 25, "en_US"),
+                    createDummyItem(imeZ1, "", "E", "en", 19, "en_US"),
+                    createDummyItem(imeZ1, "", "Z", "en", 22, "en_US"),
+                    createDummyItem(imeZ1, "", "", "en", 25, "en_US"),
                     // Subtypes that has different language than the system's.
-                    createDummyItem("", "A", "hi_IN", 29, "en_US"),
-                    createDummyItem("", "E", "ja", 20, "en_US"),
-                    createDummyItem("", "Z", "ja", 23, "en_US"),
-                    createDummyItem("", "", "ja", 26, "en_US"));
+                    createDummyItem(imeZ1, "", "A", "hi_IN", 29, "en_US"),
+                    createDummyItem(imeZ1, "", "E", "ja", 20, "en_US"),
+                    createDummyItem(imeZ1, "", "Z", "ja", 23, "en_US"),
+                    createDummyItem(imeZ1, "", "", "ja", 26, "en_US"));
 
             // Ensure {@link java.lang.Comparable#compareTo} contracts are satisfied.
             for (int i = 0; i < items.size(); ++i) {
@@ -432,14 +438,25 @@
         {
             // Following two items have the same priority.
             final ImeSubtypeListItem nonSystemLocale1 =
-                    createDummyItem("X", "A", "ja_JP", 0, "en_US");
+                    createDummyItem(imeX1, "X", "A", "ja_JP", 0, "en_US");
             final ImeSubtypeListItem nonSystemLocale2 =
-                    createDummyItem("X", "A", "hi_IN", 1, "en_US");
+                    createDummyItem(imeX1, "X", "A", "hi_IN", 1, "en_US");
             assertTrue(nonSystemLocale1.compareTo(nonSystemLocale2) == 0);
             assertTrue(nonSystemLocale2.compareTo(nonSystemLocale1) == 0);
             // But those aren't equal to each other.
             assertFalse(nonSystemLocale1.equals(nonSystemLocale2));
             assertFalse(nonSystemLocale2.equals(nonSystemLocale1));
         }
+
+        {
+            // Currently ComponentName is not used for sorting.
+            final ImeSubtypeListItem ime1 = createDummyItem(imeX1, "X", "A", "ja_JP", 0, "en_US");
+            final ImeSubtypeListItem ime2 = createDummyItem(imeX2, "X", "A", "ja_JP", 0, "en_US");
+            assertTrue(ime1.compareTo(ime2) == 0);
+            assertTrue(ime2.compareTo(ime1) == 0);
+            // But those aren't equal to each other.
+            assertFalse(ime1.equals(ime2));
+            assertFalse(ime2.equals(ime1));
+        }
     }
 }