aconfig: restructure integration tests

Consolidate integration tests under tests/. Rename build targets to
follow the same pattern.

The important aconfig build targets are:

  - aconfig           : the aconfig binary
  - aconfig.test      : the aconfig unit tests
  - aconfig.test.java : the Java integration tests
  - aconfig.test.cpp  : the C++ integration tests
  - aconfig.test.rust : the Rust integration tests (not implemented yet)

Note: the Rust integration tests are blocked until the build system has
added support for aconfig Rust libraries.

Note: the flags used in the integration are not set correctly. A
follow-up CL will fix this.

Bug: 283911467
Test: atest aconfig.test.java aconfig.test.cpp
Change-Id: Idb8dad4c38a49231c2e89228775bacf065ee1f57
diff --git a/tools/aconfig/tests/AconfigTest.java b/tools/aconfig/tests/AconfigTest.java
index 778a4c6..6681f32 100644
--- a/tools/aconfig/tests/AconfigTest.java
+++ b/tools/aconfig/tests/AconfigTest.java
@@ -1,7 +1,12 @@
+import static com.android.aconfig.test.Flags.FLAG_DISABLED_RO;
+import static com.android.aconfig.test.Flags.FLAG_DISABLED_RW;
+import static com.android.aconfig.test.Flags.FLAG_ENABLED_RO;
+import static com.android.aconfig.test.Flags.FLAG_ENABLED_RW;
 import static com.android.aconfig.test.Flags.disabledRo;
 import static com.android.aconfig.test.Flags.disabledRw;
 import static com.android.aconfig.test.Flags.enabledRo;
 import static com.android.aconfig.test.Flags.enabledRw;
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
@@ -13,11 +18,13 @@
 public final class AconfigTest {
     @Test
     public void testDisabledReadOnlyFlag() {
+        assertEquals("com.android.aconfig.test.disabled_ro", FLAG_DISABLED_RO);
         assertFalse(disabledRo());
     }
 
     @Test
     public void testEnabledReadOnlyFlag() {
+        assertEquals("com.android.aconfig.test.disabled_rw", FLAG_DISABLED_RW);
         // TODO: change to assertTrue(enabledRo()) when the build supports reading tests/*.values
         // (currently all flags are assigned the default READ_ONLY + DISABLED)
         assertFalse(enabledRo());
@@ -25,11 +32,13 @@
 
     @Test
     public void testDisabledReadWriteFlag() {
+        assertEquals("com.android.aconfig.test.enabled_ro", FLAG_ENABLED_RO);
         assertFalse(disabledRw());
     }
 
     @Test
     public void testEnabledReadWriteFlag() {
+        assertEquals("com.android.aconfig.test.enabled_rw", FLAG_ENABLED_RW);
         // TODO: change to assertTrue(enabledRw()) when the build supports reading tests/*.values
         // (currently all flags are assigned the default READ_ONLY + DISABLED)
         assertFalse(enabledRw());