Build a Bridge to Eddystone Encoder in Components

chrome/browser/android/physical_web/eddystone_encoder_bridge_unittest.cc

+// Copyright 2017 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.
+
+#include "chrome/browser/android/physical_web/eddystone_encoder_bridge.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
+#include "base/android/jni_string.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+using base::android::ToJavaByteArray;
+
+class EddystoneEncoderBridgeTest : public testing::Test {
+ public:
+  EddystoneEncoderBridgeTest() {}
+  ~EddystoneEncoderBridgeTest() override {}
+
+  void SetUp() override { env_ = base::android::AttachCurrentThread(); }
+
+  void TearDown() override {}
+
+  JNIEnv* Env();
+  jstring JavaString(const std::string& value);
+  bool ScopedJavaLocalRefJByteArrayEquals(JNIEnv* env,
+                                          ScopedJavaLocalRef<jbyteArray> a,
+                                          ScopedJavaLocalRef<jbyteArray> b);
+
+ private:
+  JNIEnv* env_;
+};
+
+JNIEnv* EddystoneEncoderBridgeTest::Env() {
+  return env_;
+}
+
+jstring EddystoneEncoderBridgeTest::JavaString(const std::string& value) {
+  return base::android::ConvertUTF8ToJavaString(Env(), value).Release();
+}
+
+bool EddystoneEncoderBridgeTest::ScopedJavaLocalRefJByteArrayEquals(
+    JNIEnv* env,
+    ScopedJavaLocalRef<jbyteArray> a,
+    ScopedJavaLocalRef<jbyteArray> b) {
+  jbyteArray aByteArray = a.obj();

[mattreynolds, 2017/03/14 23:21:12]

snake_case

[iankc, 2017/03/15 19:08:50]

Done.

+  jbyteArray bByteArray = b.obj();
+
+  int aLen = env->GetArrayLength(aByteArray);
+  if (aLen != env->GetArrayLength(bByteArray)) {
+    return false;
+  }
+
+  jbyte* aElems = env->GetByteArrayElements(aByteArray, NULL);
+  jbyte* bElems = env->GetByteArrayElements(bByteArray, NULL);
+
+  bool cmp = memcmp(aElems, bElems, aLen) == 0;
+
+  env->ReleaseByteArrayElements(aByteArray, aElems, JNI_ABORT);
+  env->ReleaseByteArrayElements(bByteArray, bElems, JNI_ABORT);
+
+  return cmp;
+}
+
+TEST_F(EddystoneEncoderBridgeTest, testNullUrl) {
+  ScopedJavaLocalRef<jbyteArray> actual =
+      EncodeUrlForTesting(Env(), JavaParamRef<jobject>(nullptr),
+                          JavaParamRef<jstring>(Env(), nullptr));
+  EXPECT_TRUE(Env()->ExceptionCheck());
+}
+
+TEST_F(EddystoneEncoderBridgeTest, testInvalidUrl) {
+  std::string url = "Wrong!";
+  ScopedJavaLocalRef<jbyteArray> actual =
+      EncodeUrlForTesting(Env(), JavaParamRef<jobject>(nullptr),
+                          JavaParamRef<jstring>(Env(), JavaString(url)));
+  EXPECT_TRUE(Env()->ExceptionCheck());
+}
+
+TEST_F(EddystoneEncoderBridgeTest, testValidUrl) {
+  std::string url = "https://www.example.com/";
+  uint8_t expected_array[] = {0x01,  // "https://www."
+                              0x65, 0x78, 0x61, 0x6d,
+                              0x70, 0x6c, 0x65,  // "example"
+                              0x00};
+  size_t expected_array_length = sizeof(expected_array) / sizeof(uint8_t);
+  ScopedJavaLocalRef<jbyteArray> expected =
+      ToJavaByteArray(Env(), &expected_array[0], expected_array_length);

[mattreynolds, 2017/03/14 23:21:12]

Let's change this one too.

&expected_array[0] -> expected_array->data()

[iankc, 2017/03/15 19:08:50]

This is an array and not a vector. I don't think that it has a data function.

+  ScopedJavaLocalRef<jbyteArray> actual =
+      EncodeUrlForTesting(Env(), JavaParamRef<jobject>(nullptr),
+                          JavaParamRef<jstring>(Env(), JavaString(url)));
+  EXPECT_TRUE(ScopedJavaLocalRefJByteArrayEquals(Env(), expected, actual));
+  EXPECT_FALSE(Env()->ExceptionCheck());
+}