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Side by Side Diff: base/android/jni_array_unittest.cc

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/android/jni_array.h"
6
7 #include "base/android/jni_android.h"
8 #include "base/android/scoped_java_ref.h"
9 #include "testing/gtest/include/gtest/gtest.h"
10
11 namespace base {
12 namespace android {
13
14 TEST(JniArray, BasicConversions) {
15 const uint8 kBytes[] = { 0, 1, 2, 3 };
16 const size_t kLen = arraysize(kBytes);
17 JNIEnv* env = AttachCurrentThread();
18 ScopedJavaLocalRef<jbyteArray> bytes = ToJavaByteArray(env, kBytes, kLen);
19 ASSERT_TRUE(bytes.obj());
20
21 std::vector<uint8> vec(5);
22 JavaByteArrayToByteVector(env, bytes.obj(), &vec);
23 EXPECT_EQ(4U, vec.size());
24 std::vector<uint8> expected_vec(kBytes, kBytes + kLen);
25 EXPECT_EQ(expected_vec, vec);
26
27 AppendJavaByteArrayToByteVector(env, bytes.obj(), &vec);
28 EXPECT_EQ(8U, vec.size());
29 expected_vec.insert(expected_vec.end(), kBytes, kBytes + kLen);
30 EXPECT_EQ(expected_vec, vec);
31 }
32
33 void CheckIntConversion(
34 JNIEnv* env,
35 const int* int_array,
36 const size_t len,
37 const ScopedJavaLocalRef<jintArray>& ints) {
38 ASSERT_TRUE(ints.obj());
39
40 jsize java_array_len = env->GetArrayLength(ints.obj());
41 ASSERT_EQ(static_cast<jsize>(len), java_array_len);
42
43 jint value;
44 for (size_t i = 0; i < len; ++i) {
45 env->GetIntArrayRegion(ints.obj(), i, 1, &value);
46 ASSERT_EQ(int_array[i], value);
47 }
48 }
49
50 TEST(JniArray, IntConversions) {
51 const int kInts[] = { 0, 1, -1, kint32min, kint32max};
52 const size_t kLen = arraysize(kInts);
53
54 JNIEnv* env = AttachCurrentThread();
55 CheckIntConversion(env, kInts, kLen, ToJavaIntArray(env, kInts, kLen));
56
57 const std::vector<int> vec(kInts, kInts + kLen);
58 CheckIntConversion(env, kInts, kLen, ToJavaIntArray(env, vec));
59 }
60
61 void CheckLongConversion(
62 JNIEnv* env,
63 const int64* long_array,
64 const size_t len,
65 const ScopedJavaLocalRef<jlongArray>& longs) {
66 ASSERT_TRUE(longs.obj());
67
68 jsize java_array_len = env->GetArrayLength(longs.obj());
69 ASSERT_EQ(static_cast<jsize>(len), java_array_len);
70
71 jlong value;
72 for (size_t i = 0; i < len; ++i) {
73 env->GetLongArrayRegion(longs.obj(), i, 1, &value);
74 ASSERT_EQ(long_array[i], value);
75 }
76 }
77
78 TEST(JniArray, LongConversions) {
79 const int64 kLongs[] = { 0, 1, -1, kint64min, kint64max};
80 const size_t kLen = arraysize(kLongs);
81
82 JNIEnv* env = AttachCurrentThread();
83 CheckLongConversion(env, kLongs, kLen, ToJavaLongArray(env, kLongs, kLen));
84
85 const std::vector<int64> vec(kLongs, kLongs + kLen);
86 CheckLongConversion(env, kLongs, kLen, ToJavaLongArray(env, vec));
87 }
88
89 TEST(JniArray, JavaIntArrayToIntVector) {
90 const int kInts[] = {0, 1, -1};
91 const size_t kLen = arraysize(kInts);
92
93 JNIEnv* env = AttachCurrentThread();
94 ScopedJavaLocalRef<jintArray> jints(env, env->NewIntArray(kLen));
95 ASSERT_TRUE(jints.obj());
96
97 for (size_t i = 0; i < kLen; ++i) {
98 jint j = static_cast<jint>(kInts[i]);
99 env->SetIntArrayRegion(jints.obj(), i, 1, &j);
100 ASSERT_FALSE(HasException(env));
101 }
102
103 std::vector<int> ints;
104 JavaIntArrayToIntVector(env, jints.obj(), &ints);
105
106 ASSERT_EQ(static_cast<jsize>(ints.size()), env->GetArrayLength(jints.obj()));
107
108 jint value;
109 for (size_t i = 0; i < kLen; ++i) {
110 env->GetIntArrayRegion(jints.obj(), i, 1, &value);
111 ASSERT_EQ(ints[i], value);
112 }
113 }
114
115 TEST(JniArray, JavaFloatArrayToFloatVector) {
116 const float kFloats[] = {0.0, 0.5, -0.5};
117 const size_t kLen = arraysize(kFloats);
118
119 JNIEnv* env = AttachCurrentThread();
120 ScopedJavaLocalRef<jfloatArray> jfloats(env, env->NewFloatArray(kLen));
121 ASSERT_TRUE(jfloats.obj());
122
123 for (size_t i = 0; i < kLen; ++i) {
124 jfloat j = static_cast<jfloat>(kFloats[i]);
125 env->SetFloatArrayRegion(jfloats.obj(), i, 1, &j);
126 ASSERT_FALSE(HasException(env));
127 }
128
129 std::vector<float> floats;
130 JavaFloatArrayToFloatVector(env, jfloats.obj(), &floats);
131
132 ASSERT_EQ(static_cast<jsize>(floats.size()),
133 env->GetArrayLength(jfloats.obj()));
134
135 jfloat value;
136 for (size_t i = 0; i < kLen; ++i) {
137 env->GetFloatArrayRegion(jfloats.obj(), i, 1, &value);
138 ASSERT_EQ(floats[i], value);
139 }
140 }
141
142 TEST(JniArray, JavaArrayOfByteArrayToStringVector) {
143 const int kMaxItems = 50;
144 JNIEnv* env = AttachCurrentThread();
145
146 // Create a byte[][] object.
147 ScopedJavaLocalRef<jclass> byte_array_clazz(env, env->FindClass("[B"));
148 ASSERT_TRUE(byte_array_clazz.obj());
149
150 ScopedJavaLocalRef<jobjectArray> array(
151 env, env->NewObjectArray(kMaxItems, byte_array_clazz.obj(), NULL));
152 ASSERT_TRUE(array.obj());
153
154 // Create kMaxItems byte buffers.
155 char text[16];
156 for (int i = 0; i < kMaxItems; ++i) {
157 snprintf(text, sizeof text, "%d", i);
158 ScopedJavaLocalRef<jbyteArray> byte_array = ToJavaByteArray(
159 env, reinterpret_cast<uint8*>(text),
160 static_cast<size_t>(strlen(text)));
161 ASSERT_TRUE(byte_array.obj());
162
163 env->SetObjectArrayElement(array.obj(), i, byte_array.obj());
164 ASSERT_FALSE(HasException(env));
165 }
166
167 // Convert to std::vector<std::string>, check the content.
168 std::vector<std::string> vec;
169 JavaArrayOfByteArrayToStringVector(env, array.obj(), &vec);
170
171 EXPECT_EQ(static_cast<size_t>(kMaxItems), vec.size());
172 for (int i = 0; i < kMaxItems; ++i) {
173 snprintf(text, sizeof text, "%d", i);
174 EXPECT_STREQ(text, vec[i].c_str());
175 }
176 }
177
178 } // namespace android
179 } // namespace base
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