base/android/jni_array.h: Add JavaArrayOfByteArraysToStringVector()

This will be used by the SSL client certificate support code to
return the certificate chain as a vector of DER-encoded X.509
certificates.

BUG=none


Review URL: https://chromiumcodereview.appspot.com/11418287

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171224 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 36 insertions, 0 deletions

diff --git a/base/android/jni_array_unittest.cc b/base/android/jni_array_unittest.cc
index 7529335..a4e3025 100644
--- a/base/android/jni_array_unittest.cc
+++ b/base/android/jni_array_unittest.cc
@@ -27,5 +27,41 @@ TEST(JniArray, BasicConversions) {
   EXPECT_EQ(8U, vec.size());
 }
 
+TEST(JniArray, JavaArrayOfByteArrayToStringVector) {
+  const int kMaxItems = 50;
+  JNIEnv* env = AttachCurrentThread();
+
+  // Create a byte[][] object.
+  ScopedJavaLocalRef<jclass> byte_array_clazz(env, env->FindClass("[B"));
+  ASSERT_TRUE(byte_array_clazz.obj());
+
+  ScopedJavaLocalRef<jobjectArray> array(
+      env, env->NewObjectArray(kMaxItems, byte_array_clazz.obj(), NULL));
+  ASSERT_TRUE(array.obj());
+
+  // Create kMaxItems byte buffers.
+  char text[16];
+  for (int i = 0; i < kMaxItems; ++i) {
+    snprintf(text, sizeof text, "%d", i);
+    ScopedJavaLocalRef<jbyteArray> byte_array = ToJavaByteArray(
+        env, reinterpret_cast<uint8*>(text),
+        static_cast<size_t>(strlen(text)));
+    ASSERT_TRUE(byte_array.obj());
+
+    env->SetObjectArrayElement(array.obj(), i, byte_array.obj());
+    ASSERT_FALSE(HasException(env));
+  }
+
+  // Convert to std::vector<std::string>, check the content.
+  std::vector<std::string> vec;
+  JavaArrayOfByteArrayToStringVector(env, array.obj(), &vec);
+
+  EXPECT_EQ(static_cast<size_t>(kMaxItems), vec.size());
+  for (int i = 0; i < kMaxItems; ++i) {
+    snprintf(text, sizeof text, "%d", i);
+    EXPECT_STREQ(text, vec[i].c_str());
+  }
+}
+
 }  // namespace android
 }  // namespace base