1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "file_output_stream.h"
18 #include "vector_output_stream.h"
19
20 #include "base/unix_file/fd_file.h"
21 #include "base/logging.h"
22 #include "buffered_output_stream.h"
23 #include "common_runtime_test.h"
24
25 namespace art {
26
27 class OutputStreamTest : public CommonRuntimeTest {
28 protected:
CheckOffset(off_t expected)29 void CheckOffset(off_t expected) {
30 off_t actual = output_stream_->Seek(0, kSeekCurrent);
31 EXPECT_EQ(expected, actual);
32 }
33
SetOutputStream(OutputStream & output_stream)34 void SetOutputStream(OutputStream& output_stream) {
35 output_stream_ = &output_stream;
36 }
37
GenerateTestOutput()38 void GenerateTestOutput() {
39 EXPECT_EQ(3, output_stream_->Seek(3, kSeekCurrent));
40 CheckOffset(3);
41 EXPECT_EQ(2, output_stream_->Seek(2, kSeekSet));
42 CheckOffset(2);
43 uint8_t buf[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
44 EXPECT_TRUE(output_stream_->WriteFully(buf, 2));
45 CheckOffset(4);
46 EXPECT_EQ(6, output_stream_->Seek(2, kSeekEnd));
47 CheckOffset(6);
48 EXPECT_TRUE(output_stream_->WriteFully(buf, 4));
49 CheckOffset(10);
50 EXPECT_TRUE(output_stream_->WriteFully(buf, 6));
51 }
52
CheckTestOutput(const std::vector<uint8_t> & actual)53 void CheckTestOutput(const std::vector<uint8_t>& actual) {
54 uint8_t expected[] = {
55 0, 0, 1, 2, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6
56 };
57 EXPECT_EQ(sizeof(expected), actual.size());
58 EXPECT_EQ(0, memcmp(expected, &actual[0], actual.size()));
59 }
60
61 OutputStream* output_stream_;
62 };
63
TEST_F(OutputStreamTest,File)64 TEST_F(OutputStreamTest, File) {
65 ScratchFile tmp;
66 FileOutputStream output_stream(tmp.GetFile());
67 SetOutputStream(output_stream);
68 GenerateTestOutput();
69 std::unique_ptr<File> in(OS::OpenFileForReading(tmp.GetFilename().c_str()));
70 EXPECT_TRUE(in.get() != nullptr);
71 std::vector<uint8_t> actual(in->GetLength());
72 bool readSuccess = in->ReadFully(&actual[0], actual.size());
73 EXPECT_TRUE(readSuccess);
74 CheckTestOutput(actual);
75 }
76
TEST_F(OutputStreamTest,Buffered)77 TEST_F(OutputStreamTest, Buffered) {
78 ScratchFile tmp;
79 {
80 std::unique_ptr<FileOutputStream> file_output_stream(new FileOutputStream(tmp.GetFile()));
81 CHECK(file_output_stream.get() != nullptr);
82 BufferedOutputStream buffered_output_stream(file_output_stream.release());
83 SetOutputStream(buffered_output_stream);
84 GenerateTestOutput();
85 }
86 std::unique_ptr<File> in(OS::OpenFileForReading(tmp.GetFilename().c_str()));
87 EXPECT_TRUE(in.get() != nullptr);
88 std::vector<uint8_t> actual(in->GetLength());
89 bool readSuccess = in->ReadFully(&actual[0], actual.size());
90 EXPECT_TRUE(readSuccess);
91 CheckTestOutput(actual);
92 }
93
TEST_F(OutputStreamTest,Vector)94 TEST_F(OutputStreamTest, Vector) {
95 std::vector<uint8_t> output;
96 VectorOutputStream output_stream("test vector output", &output);
97 SetOutputStream(output_stream);
98 GenerateTestOutput();
99 CheckTestOutput(output);
100 }
101
102 } // namespace art
103