Guillaume Chatelet | 439d371 | 2018-02-01 10:03:09 +0100 | [diff] [blame] | 1 | // Copyright 2017 Google Inc. |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | #include "internal/stack_line_reader.h" |
| 16 | #include "filesystem_for_testing.h" |
| 17 | |
| 18 | #include "gtest/gtest.h" |
| 19 | |
| 20 | namespace cpu_features { |
| 21 | |
| 22 | bool operator==(const StringView& a, const StringView& b) { |
Arvid Gerstmann | fd48390 | 2018-05-03 17:07:07 +0200 | [diff] [blame] | 23 | return CpuFeatures_StringView_IsEquals(a, b); |
Guillaume Chatelet | 439d371 | 2018-02-01 10:03:09 +0100 | [diff] [blame] | 24 | } |
| 25 | |
| 26 | namespace { |
| 27 | |
| 28 | std::string ToString(StringView view) { return {view.ptr, view.size}; } |
| 29 | |
| 30 | TEST(StackLineReaderTest, Empty) { |
| 31 | auto& fs = GetEmptyFilesystem(); |
| 32 | auto* file = fs.CreateFile("/proc/cpuinfo", ""); |
| 33 | StackLineReader reader; |
| 34 | StackLineReader_Initialize(&reader, file->GetFileDescriptor()); |
| 35 | { |
| 36 | const auto result = StackLineReader_NextLine(&reader); |
| 37 | EXPECT_TRUE(result.eof); |
| 38 | EXPECT_TRUE(result.full_line); |
| 39 | EXPECT_EQ(result.line, str("")); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | TEST(StackLineReaderTest, ManySmallLines) { |
| 44 | auto& fs = GetEmptyFilesystem(); |
| 45 | auto* file = fs.CreateFile("/proc/cpuinfo", "a\nb\nc"); |
| 46 | |
| 47 | StackLineReader reader; |
| 48 | StackLineReader_Initialize(&reader, file->GetFileDescriptor()); |
| 49 | { |
| 50 | const auto result = StackLineReader_NextLine(&reader); |
| 51 | EXPECT_FALSE(result.eof); |
| 52 | EXPECT_TRUE(result.full_line); |
| 53 | EXPECT_EQ(result.line, str("a")); |
| 54 | } |
| 55 | { |
| 56 | const auto result = StackLineReader_NextLine(&reader); |
| 57 | EXPECT_FALSE(result.eof); |
| 58 | EXPECT_TRUE(result.full_line); |
| 59 | EXPECT_EQ(result.line, str("b")); |
| 60 | } |
| 61 | { |
| 62 | const auto result = StackLineReader_NextLine(&reader); |
| 63 | EXPECT_TRUE(result.eof); |
| 64 | EXPECT_TRUE(result.full_line); |
| 65 | EXPECT_EQ(result.line, str("c")); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | TEST(StackLineReaderTest, TruncatedLine) { |
| 70 | auto& fs = GetEmptyFilesystem(); |
| 71 | auto* file = fs.CreateFile("/proc/cpuinfo", R"(First |
| 72 | Second |
| 73 | More than 16 characters, this will be truncated. |
| 74 | last)"); |
| 75 | |
| 76 | StackLineReader reader; |
| 77 | StackLineReader_Initialize(&reader, file->GetFileDescriptor()); |
| 78 | { |
| 79 | const auto result = StackLineReader_NextLine(&reader); |
| 80 | EXPECT_FALSE(result.eof); |
| 81 | EXPECT_TRUE(result.full_line); |
| 82 | EXPECT_EQ(result.line, str("First")); |
| 83 | } |
| 84 | { |
| 85 | const auto result = StackLineReader_NextLine(&reader); |
| 86 | EXPECT_FALSE(result.eof); |
| 87 | EXPECT_TRUE(result.full_line); |
| 88 | EXPECT_EQ(result.line, str("Second")); |
| 89 | } |
| 90 | { |
| 91 | const auto result = StackLineReader_NextLine(&reader); |
| 92 | EXPECT_FALSE(result.eof); |
| 93 | EXPECT_FALSE(result.full_line); |
| 94 | EXPECT_EQ(result.line, str("More than 16 cha")); |
| 95 | } |
| 96 | { |
| 97 | const auto result = StackLineReader_NextLine(&reader); |
| 98 | EXPECT_TRUE(result.eof); |
| 99 | EXPECT_TRUE(result.full_line); |
| 100 | EXPECT_EQ(result.line, str("last")); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | TEST(StackLineReaderTest, TruncatedLines) { |
| 105 | auto& fs = GetEmptyFilesystem(); |
| 106 | auto* file = fs.CreateFile("/proc/cpuinfo", R"(More than 16 characters |
| 107 | Another line that is too long)"); |
| 108 | |
| 109 | StackLineReader reader; |
| 110 | StackLineReader_Initialize(&reader, file->GetFileDescriptor()); |
| 111 | { |
| 112 | const auto result = StackLineReader_NextLine(&reader); |
| 113 | EXPECT_FALSE(result.eof); |
| 114 | EXPECT_FALSE(result.full_line); |
| 115 | EXPECT_EQ(result.line, str("More than 16 cha")); |
| 116 | } |
| 117 | { |
| 118 | const auto result = StackLineReader_NextLine(&reader); |
| 119 | EXPECT_FALSE(result.eof); |
| 120 | EXPECT_FALSE(result.full_line); |
| 121 | EXPECT_EQ(result.line, str("Another line tha")); |
| 122 | } |
| 123 | { |
| 124 | const auto result = StackLineReader_NextLine(&reader); |
| 125 | EXPECT_TRUE(result.eof); |
| 126 | EXPECT_TRUE(result.full_line); |
| 127 | EXPECT_EQ(result.line, str("")); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | } // namespace |
| 132 | } // namespace cpu_features |