Add test for bug 28833829.

There doesn't appear to be a way to get smali to generate these
files so they were generated "by hand" by editing the dex-file
and changing its checksum.

bug: 28833829
Change-Id: I9daca7a02ee90bac5ae1bd5460175d7732bb290f

luni/src/test/java/libcore/java/lang/ClassTest.java

@@ -15,8 +15,15 @@
  */
 package libcore.java.lang;
 
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+
 import junit.framework.TestCase;
 
+import dalvik.system.PathClassLoader;
+
 public class ClassTest extends TestCase {
 
     interface Foo {
@@ -51,6 +58,32 @@ public class ClassTest extends TestCase {
         assertSame(Object.class, (new Integer[0]).getClass().getGenericSuperclass());
     }
 
+    public void test_b28833829() throws Exception {
+        File f = File.createTempFile("temp_b28833829", ".dex");
+        try (InputStream is =
+            getClass().getClassLoader().getResourceAsStream("TestBug28833829.dex");
+            OutputStream os = new FileOutputStream(f)) {
+            byte[] buffer = new byte[8192];
+            int bytesRead = 0;
+            while ((bytesRead = is.read(buffer)) >= 0) {
+                os.write(buffer, 0, bytesRead);
+            }
+        }
+
+        PathClassLoader pcl = new PathClassLoader(f.getAbsolutePath(), null);
+        Class<?> cl = pcl.loadClass(
+            "libcore.java.lang.TestBadInnerClass_Outer$ClassTestBadInnerClass_InnerClass");
+
+        // Note that getName() and getSimpleName() are inconsistent here because for
+        // inner classes,  the latter is fetched directly from the InnerClass
+        // annotation in the dex file. We do not perform any sort of consistency
+        // checks with the class name or the enclosing class name. Unfortunately, applications
+        // have come to rely on this behaviour.
+        assertEquals("libcore.java.lang.TestBadInnerClass_Outer$ClassTestBadInnerClass_InnerClass",
+            cl.getName());
+        assertEquals("TestBadInnerClass_InnerXXXXX", cl.getSimpleName());
+    }
+
     interface A {
         public static String name = "A";
     }