Android: allow JNI generator to be used with jarjar.

base/android/jni_generator/jni_generator_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Tests for jni_generator.py.
 
 This test suite contains various tests for the JNI generator.
 It exercises the low-level parser all the way up to the
 code generator and ensures the output matches a golden
@@ skipping 1919 matching lines @@
     """
     jni_from_java = jni_generator.JNIFromJavaSource(
         test_data, ('com/google/lookhowextremelylongiam/snarf/'
                     'icankeepthisupallday/ReallyLongClassNamesAreAllTheRage'))
     jni_lines = jni_from_java.GetContent().split('\n')
     line = filter(lambda line: line.lstrip().startswith('#ifndef'),
                   jni_lines)[0]
     self.assertTrue(len(line) > 80,
                     ('Expected #ifndef line to be > 80 chars: ', line))
 
+  def testJarJarRemapping(self):
+    test_data = """
+    package org.chromium.example.jni_generator;
+
+    import org.chromium.example2.Test;
+
+    class Example {
+      private static native void nativeTest(Test t);
+    }
+    """
+    jni_generator.JniParams.SetJarJarMappings(
+        """rule org.chromium.example.** com.test.@1
+        rule org.chromium.example2.** org.test2.@0""")
+    jni_from_java = jni_generator.JNIFromJavaSource(
+        test_data, 'org/chromium/example/jni_generator/Example')
+    jni_generator.JniParams.SetJarJarMappings('')
+    golden_content = """\
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is autogenerated by
+//     base/android/jni_generator/jni_generator_tests.py
+// For
+//     org/chromium/example/jni_generator/Example
+
+#ifndef org_chromium_example_jni_generator_Example_JNI
+#define org_chromium_example_jni_generator_Example_JNI
+
+#include <jni.h>
+
+#include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/basictypes.h"
+#include "base/logging.h"
+
+using base::android::ScopedJavaLocalRef;
+
+// Step 1: forward declarations.
+namespace {
+const char kExampleClassPath[] = "com/test/jni_generator/Example";
+// Leaking this jclass as we cannot use LazyInstance from some threads.
+jclass g_Example_clazz = NULL;
+}  // namespace
+
+static void Test(JNIEnv* env, jclass clazz,
+    jobject t);
+
+// Step 2: method stubs.
+
+// Step 3: RegisterNatives.
+
+static bool RegisterNativesImpl(JNIEnv* env) {
+
+  g_Example_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
+      base::android::GetClass(env, kExampleClassPath).obj()));
+  static const JNINativeMethod kMethodsExample[] = {
+    { "nativeTest",
+"("
+"Lorg/test2/org/chromium/example2/Test;"
+")"
+"V", reinterpret_cast<void*>(Test) },
+  };
+  const int kMethodsExampleSize = arraysize(kMethodsExample);
+
+  if (env->RegisterNatives(g_Example_clazz,
+                           kMethodsExample,
+                           kMethodsExampleSize) < 0) {
+    LOG(ERROR) << "RegisterNatives failed in " << __FILE__;
+    return false;
+  }
+
+  return true;
+}
+
+#endif  // org_chromium_example_jni_generator_Example_JNI
+"""
+    self.assertTextEquals(golden_content, jni_from_java.GetContent())
+
   def testImports(self):
     import_header = """
 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.app;
 
 import android.app.Service;
 import android.content.Context;
@@ skipping 46 matching lines @@
 
   def testJniParamsJavaToJni(self):
     self.assertTextEquals('I', JniParams.JavaToJni('int'))
     self.assertTextEquals('[B', JniParams.JavaToJni('byte[]'))
     self.assertTextEquals(
         '[Ljava/nio/ByteBuffer;', JniParams.JavaToJni('java/nio/ByteBuffer[]'))
 
 
 if __name__ == '__main__':
   unittest.main()