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 EXPECT_TRUE(output_stream_->Flush());
52 }
53
CheckTestOutput(const std::vector<uint8_t> & actual)54 void CheckTestOutput(const std::vector<uint8_t>& actual) {
55 uint8_t expected[] = {
56 0, 0, 1, 2, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6
57 };
58 EXPECT_EQ(sizeof(expected), actual.size());
59 EXPECT_EQ(0, memcmp(expected, &actual[0], actual.size()));
60 }
61
62 OutputStream* output_stream_;
63 };
64
TEST_F(OutputStreamTest,File)65 TEST_F(OutputStreamTest, File) {
66 ScratchFile tmp;
67 FileOutputStream output_stream(tmp.GetFile());
68 SetOutputStream(output_stream);
69 GenerateTestOutput();
70 std::unique_ptr<File> in(OS::OpenFileForReading(tmp.GetFilename().c_str()));
71 EXPECT_TRUE(in.get() != nullptr);
72 std::vector<uint8_t> actual(in->GetLength());
73 bool readSuccess = in->ReadFully(&actual[0], actual.size());
74 EXPECT_TRUE(readSuccess);
75 CheckTestOutput(actual);
76 }
77
TEST_F(OutputStreamTest,Buffered)78 TEST_F(OutputStreamTest, Buffered) {
79 ScratchFile tmp;
80 {
81 BufferedOutputStream buffered_output_stream(std::make_unique<FileOutputStream>(tmp.GetFile()));
82 SetOutputStream(buffered_output_stream);
83 GenerateTestOutput();
84 }
85 std::unique_ptr<File> in(OS::OpenFileForReading(tmp.GetFilename().c_str()));
86 EXPECT_TRUE(in.get() != nullptr);
87 std::vector<uint8_t> actual(in->GetLength());
88 bool readSuccess = in->ReadFully(&actual[0], actual.size());
89 EXPECT_TRUE(readSuccess);
90 CheckTestOutput(actual);
91 }
92
TEST_F(OutputStreamTest,Vector)93 TEST_F(OutputStreamTest, Vector) {
94 std::vector<uint8_t> output;
95 VectorOutputStream output_stream("test vector output", &output);
96 SetOutputStream(output_stream);
97 GenerateTestOutput();
98 CheckTestOutput(output);
99 }
100
TEST_F(OutputStreamTest,BufferedFlush)101 TEST_F(OutputStreamTest, BufferedFlush) {
102 struct CheckingOutputStream : OutputStream {
103 CheckingOutputStream()
104 : OutputStream("dummy"),
105 flush_called(false) { }
106 ~CheckingOutputStream() OVERRIDE {}
107
108 bool WriteFully(const void* buffer ATTRIBUTE_UNUSED,
109 size_t byte_count ATTRIBUTE_UNUSED) OVERRIDE {
110 LOG(FATAL) << "UNREACHABLE";
111 UNREACHABLE();
112 }
113
114 off_t Seek(off_t offset ATTRIBUTE_UNUSED, Whence whence ATTRIBUTE_UNUSED) OVERRIDE {
115 LOG(FATAL) << "UNREACHABLE";
116 UNREACHABLE();
117 }
118
119 bool Flush() OVERRIDE {
120 flush_called = true;
121 return true;
122 }
123
124 bool flush_called;
125 };
126
127 std::unique_ptr<CheckingOutputStream> cos = std::make_unique<CheckingOutputStream>();
128 CheckingOutputStream* checking_output_stream = cos.get();
129 BufferedOutputStream buffered(std::move(cos));
130 ASSERT_FALSE(checking_output_stream->flush_called);
131 bool flush_result = buffered.Flush();
132 ASSERT_TRUE(flush_result);
133 ASSERT_TRUE(checking_output_stream->flush_called);
134 }
135
136 } // namespace art
137