summaryrefslogtreecommitdiffstats
path: root/src/build_log_test.cc
blob: 48ece23acc82fad1d3d232d5918a150ea8b099a4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
// Copyright 2011 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "build_log.h"

#include "util.h"
#include "test.h"

#include <sys/stat.h>
#ifdef _WIN32
#include <fcntl.h>
#include <share.h>
#else
#include <sys/types.h>
#include <unistd.h>
#endif
#include <cassert>

namespace {

const char kTestFilename[] = "BuildLogTest-tempfile";

struct BuildLogTest : public StateTestWithBuiltinRules, public BuildLogUser {
  virtual void SetUp() {
    // In case a crashing test left a stale file behind.
    unlink(kTestFilename);
  }
  virtual void TearDown() {
    unlink(kTestFilename);
  }
  virtual bool IsPathDead(StringPiece s) const { return false; }
};

TEST_F(BuildLogTest, WriteRead) {
  AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n");

  BuildLog log1;
  string err;
  EXPECT_TRUE(log1.OpenForWrite(kTestFilename, *this, &err));
  ASSERT_EQ("", err);
  log1.RecordCommand(state_.edges_[0], 15, 18);
  log1.RecordCommand(state_.edges_[1], 20, 25);
  log1.Close();

  BuildLog log2;
  EXPECT_TRUE(log2.Load(kTestFilename, &err));
  ASSERT_EQ("", err);

  ASSERT_EQ(2u, log1.entries().size());
  ASSERT_EQ(2u, log2.entries().size());
  BuildLog::LogEntry* e1 = log1.LookupByOutput("out");
  ASSERT_TRUE(e1);
  BuildLog::LogEntry* e2 = log2.LookupByOutput("out");
  ASSERT_TRUE(e2);
  ASSERT_TRUE(*e1 == *e2);
  ASSERT_EQ(15, e1->start_time);
  ASSERT_EQ("out", e1->output);
}

TEST_F(BuildLogTest, FirstWriteAddsSignature) {
  const char kExpectedVersion[] = "# ninja log vX\n";
  const size_t kVersionPos = strlen(kExpectedVersion) - 2;  // Points at 'X'.

  BuildLog log;
  string contents, err;

  EXPECT_TRUE(log.OpenForWrite(kTestFilename, *this, &err));
  ASSERT_EQ("", err);
  log.Close();

  ASSERT_EQ(0, ReadFile(kTestFilename, &contents, &err));
  ASSERT_EQ("", err);
  if (contents.size() >= kVersionPos)
    contents[kVersionPos] = 'X';
  EXPECT_EQ(kExpectedVersion, contents);

  // Opening the file anew shouldn't add a second version string.
  EXPECT_TRUE(log.OpenForWrite(kTestFilename, *this, &err));
  ASSERT_EQ("", err);
  log.Close();

  contents.clear();
  ASSERT_EQ(0, ReadFile(kTestFilename, &contents, &err));
  ASSERT_EQ("", err);
  if (contents.size() >= kVersionPos)
    contents[kVersionPos] = 'X';
  EXPECT_EQ(kExpectedVersion, contents);
}

TEST_F(BuildLogTest, DoubleEntry) {
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v4\n");
  fprintf(f, "0\t1\t2\tout\tcommand abc\n");
  fprintf(f, "3\t4\t5\tout\tcommand def\n");
  fclose(f);

  string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_EQ("", err);

  BuildLog::LogEntry* e = log.LookupByOutput("out");
  ASSERT_TRUE(e);
  ASSERT_NO_FATAL_FAILURE(AssertHash("command def", e->command_hash));
}

TEST_F(BuildLogTest, Truncate) {
  AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n");

  {
    BuildLog log1;
    string err;
    EXPECT_TRUE(log1.OpenForWrite(kTestFilename, *this, &err));
    ASSERT_EQ("", err);
    log1.RecordCommand(state_.edges_[0], 15, 18);
    log1.RecordCommand(state_.edges_[1], 20, 25);
    log1.Close();
  }

  struct stat statbuf;
  ASSERT_EQ(0, stat(kTestFilename, &statbuf));
  ASSERT_GT(statbuf.st_size, 0);

  // For all possible truncations of the input file, assert that we don't
  // crash when parsing.
  for (off_t size = statbuf.st_size; size > 0; --size) {
    BuildLog log2;
    string err;
    EXPECT_TRUE(log2.OpenForWrite(kTestFilename, *this, &err));
    ASSERT_EQ("", err);
    log2.RecordCommand(state_.edges_[0], 15, 18);
    log2.RecordCommand(state_.edges_[1], 20, 25);
    log2.Close();

    ASSERT_TRUE(Truncate(kTestFilename, size, &err));

    BuildLog log3;
    err.clear();
    ASSERT_TRUE(log3.Load(kTestFilename, &err) == LOAD_SUCCESS || !err.empty());
  }
}

TEST_F(BuildLogTest, ObsoleteOldVersion) {
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v3\n");
  fprintf(f, "123 456 0 out command\n");
  fclose(f);

  string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_NE(err.find("version"), string::npos);
}

TEST_F(BuildLogTest, SpacesInOutputV4) {
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v4\n");
  fprintf(f, "123\t456\t456\tout with space\tcommand\n");
  fclose(f);

  string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_EQ("", err);

  BuildLog::LogEntry* e = log.LookupByOutput("out with space");
  ASSERT_TRUE(e);
  ASSERT_EQ(123, e->start_time);
  ASSERT_EQ(456, e->end_time);
  ASSERT_EQ(456, e->mtime);
  ASSERT_NO_FATAL_FAILURE(AssertHash("command", e->command_hash));
}

TEST_F(BuildLogTest, DuplicateVersionHeader) {
  // Old versions of ninja accidentally wrote multiple version headers to the
  // build log on Windows. This shouldn't crash, and the second version header
  // should be ignored.
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v4\n");
  fprintf(f, "123\t456\t456\tout\tcommand\n");
  fprintf(f, "# ninja log v4\n");
  fprintf(f, "456\t789\t789\tout2\tcommand2\n");
  fclose(f);

  string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_EQ("", err);

  BuildLog::LogEntry* e = log.LookupByOutput("out");
  ASSERT_TRUE(e);
  ASSERT_EQ(123, e->start_time);
  ASSERT_EQ(456, e->end_time);
  ASSERT_EQ(456, e->mtime);
  ASSERT_NO_FATAL_FAILURE(AssertHash("command", e->command_hash));

  e = log.LookupByOutput("out2");
  ASSERT_TRUE(e);
  ASSERT_EQ(456, e->start_time);
  ASSERT_EQ(789, e->end_time);
  ASSERT_EQ(789, e->mtime);
  ASSERT_NO_FATAL_FAILURE(AssertHash("command2", e->command_hash));
}

struct TestDiskInterface : public DiskInterface {
  virtual TimeStamp Stat(const string& path, string* err) const {
    return 4;
  }
  virtual bool WriteFile(const string& path, const string& contents) {
    assert(false);
    return true;
  }
  virtual bool MakeDir(const string& path) {
    assert(false);
    return false;
  }
  virtual Status ReadFile(const string& path, string* contents, string* err) {
    assert(false);
    return NotFound;
  }
  virtual int RemoveFile(const string& path) {
    assert(false);
    return 0;
  }
};

TEST_F(BuildLogTest, Restat) {
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v4\n"
             "1\t2\t3\tout\tcommand\n");
  fclose(f);
  std::string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_EQ("", err);
  BuildLog::LogEntry* e = log.LookupByOutput("out");
  ASSERT_EQ(3, e->mtime);

  TestDiskInterface testDiskInterface;
  EXPECT_TRUE(log.Restat(kTestFilename, testDiskInterface, &err));
  ASSERT_EQ("", err);
  e = log.LookupByOutput("out");
  ASSERT_EQ(4, e->mtime);
}

TEST_F(BuildLogTest, VeryLongInputLine) {
  // Ninja's build log buffer is currently 256kB. Lines longer than that are
  // silently ignored, but don't affect parsing of other lines.
  FILE* f = fopen(kTestFilename, "wb");
  fprintf(f, "# ninja log v4\n");
  fprintf(f, "123\t456\t456\tout\tcommand start");
  for (size_t i = 0; i < (512 << 10) / strlen(" more_command"); ++i)
    fputs(" more_command", f);
  fprintf(f, "\n");
  fprintf(f, "456\t789\t789\tout2\tcommand2\n");
  fclose(f);

  string err;
  BuildLog log;
  EXPECT_TRUE(log.Load(kTestFilename, &err));
  ASSERT_EQ("", err);

  BuildLog::LogEntry* e = log.LookupByOutput("out");
  ASSERT_EQ(NULL, e);

  e = log.LookupByOutput("out2");
  ASSERT_TRUE(e);
  ASSERT_EQ(456, e->start_time);
  ASSERT_EQ(789, e->end_time);
  ASSERT_EQ(789, e->mtime);
  ASSERT_NO_FATAL_FAILURE(AssertHash("command2", e->command_hash));
}

TEST_F(BuildLogTest, MultiTargetEdge) {
  AssertParse(&state_,
"build out out.d: cat\n");

  BuildLog log;
  log.RecordCommand(state_.edges_[0], 21, 22);

  ASSERT_EQ(2u, log.entries().size());
  BuildLog::LogEntry* e1 = log.LookupByOutput("out");
  ASSERT_TRUE(e1);
  BuildLog::LogEntry* e2 = log.LookupByOutput("out.d");
  ASSERT_TRUE(e2);
  ASSERT_EQ("out", e1->output);
  ASSERT_EQ("out.d", e2->output);
  ASSERT_EQ(21, e1->start_time);
  ASSERT_EQ(21, e2->start_time);
  ASSERT_EQ(22, e2->end_time);
  ASSERT_EQ(22, e2->end_time);
}

struct BuildLogRecompactTest : public BuildLogTest {
  virtual bool IsPathDead(StringPiece s) const { return s == "out2"; }
};

TEST_F(BuildLogRecompactTest, Recompact) {
  AssertParse(&state_,
"build out: cat in\n"
"build out2: cat in\n");

  BuildLog log1;
  string err;
  EXPECT_TRUE(log1.OpenForWrite(kTestFilename, *this, &err));
  ASSERT_EQ("", err);
  // Record the same edge several times, to trigger recompaction
  // the next time the log is opened.
  for (int i = 0; i < 200; ++i)
    log1.RecordCommand(state_.edges_[0], 15, 18 + i);
  log1.RecordCommand(state_.edges_[1], 21, 22);
  log1.Close();

  // Load...
  BuildLog log2;
  EXPECT_TRUE(log2.Load(kTestFilename, &err));
  ASSERT_EQ("", err);
  ASSERT_EQ(2u, log2.entries().size());
  ASSERT_TRUE(log2.LookupByOutput("out"));
  ASSERT_TRUE(log2.LookupByOutput("out2"));
  // ...and force a recompaction.
  EXPECT_TRUE(log2.OpenForWrite(kTestFilename, *this, &err));
  log2.Close();

  // "out2" is dead, it should've been removed.
  BuildLog log3;
  EXPECT_TRUE(log2.Load(kTestFilename, &err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, log2.entries().size());
  ASSERT_TRUE(log2.LookupByOutput("out"));
  ASSERT_FALSE(log2.LookupByOutput("out2"));
}

}  // anonymous namespace