Fix building with Java 7

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 1548 matching lines @@
                    datatype='int'),
              Param(name='p3',
                    datatype='int'),],
              'int'))
     self.assertEquals('openJIIS_JLS',
         jni_generator.GetMangledMethodName('open',
             [Param(name='p1',
                    datatype='java/lang/String'),],
              'java/io/InputStream'))
 
+  def testFromJavaPGenerics(self):
+    contents = """
+public abstract class java.util.HashSet<T> extends java.util.AbstractSet<E> implements java.util.Set<E>, java.lang.Cloneable, java.io.Serializable {

[joth, 2013/08/31 02:43:38]

nit: I think we'd like this wrapped like the InputStream example on line 1649
below

+    public void dummy();
+}
+"""
+    jni_from_javap = jni_generator.JNIFromJavaP(contents.split('\n'), None)
+    self.assertEquals(1, len(jni_from_javap.called_by_natives))
+    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
+//     java/util/HashSet
+
+#ifndef java_util_HashSet_JNI
+#define java_util_HashSet_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 kHashSetClassPath[] = "java/util/HashSet";
+// Leaking this jclass as we cannot use LazyInstance from some threads.
+jclass g_HashSet_clazz = NULL;
+}  // namespace
+
+namespace JNI_HashSet {
+
+// Step 2: method stubs.
+
+static base::subtle::AtomicWord g_HashSet_dummy = 0;
+static void Java_HashSet_dummy(JNIEnv* env, jobject obj) __attribute__
+    ((unused));
+static void Java_HashSet_dummy(JNIEnv* env, jobject obj) {
+  /* Must call RegisterNativesImpl()  */
+  DCHECK(g_HashSet_clazz);
+  jmethodID method_id =
+      base::android::MethodID::LazyGet<
+      base::android::MethodID::TYPE_INSTANCE>(
+      env, g_HashSet_clazz,
+      "dummy",
+
+"("
+")"
+"V",
+      &g_HashSet_dummy);
+
+  env->CallVoidMethod(obj,
+      method_id);
+  base::android::CheckException(env);
+
+}
+
+// Step 3: RegisterNatives.
+
+static bool RegisterNativesImpl(JNIEnv* env) {
+
+  g_HashSet_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
+      base::android::GetClass(env, kHashSetClassPath).obj()));
+  return true;
+}
+}  // namespace JNI_HashSet
+
+#endif  // java_util_HashSet_JNI
+"""
+    self.assertTextEquals(golden_content, jni_from_javap.GetContent())
+
   def testFromJavaP(self):
     contents = """
 public abstract class java.io.InputStream extends java.lang.Object
       implements java.io.Closeable{
     public java.io.InputStream();
     public int available()       throws java.io.IOException;
     public void close()       throws java.io.IOException;
     public void mark(int);
     public boolean markSupported();
     public abstract int read()       throws java.io.IOException;
@@ skipping 496 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()