Skip to content
This repository
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 1138 lines (955 sloc) 31.809 kb
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137
// 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.h"

#include "build_log.h"
#include "graph.h"
#include "test.h"

/// Fixture for tests involving Plan.
// Though Plan doesn't use State, it's useful to have one around
// to create Nodes and Edges.
struct PlanTest : public StateTestWithBuiltinRules {
  Plan plan_;
};

TEST_F(PlanTest, Basic) {
  AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n");
  GetNode("mid")->MarkDirty();
  GetNode("out")->MarkDirty();
  string err;
  EXPECT_TRUE(plan_.AddTarget(GetNode("out"), &err));
  ASSERT_EQ("", err);
  ASSERT_TRUE(plan_.more_to_do());

  Edge* edge = plan_.FindWork();
  ASSERT_TRUE(edge);
  ASSERT_EQ("in", edge->inputs_[0]->path());
  ASSERT_EQ("mid", edge->outputs_[0]->path());

  ASSERT_FALSE(plan_.FindWork());

  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge);
  ASSERT_EQ("mid", edge->inputs_[0]->path());
  ASSERT_EQ("out", edge->outputs_[0]->path());

  plan_.EdgeFinished(edge);

  ASSERT_FALSE(plan_.more_to_do());
  edge = plan_.FindWork();
  ASSERT_EQ(0, edge);
}

// Test that two outputs from one rule can be handled as inputs to the next.
TEST_F(PlanTest, DoubleOutputDirect) {
  AssertParse(&state_,
"build out: cat mid1 mid2\n"
"build mid1 mid2: cat in\n");
  GetNode("mid1")->MarkDirty();
  GetNode("mid2")->MarkDirty();
  GetNode("out")->MarkDirty();

  string err;
  EXPECT_TRUE(plan_.AddTarget(GetNode("out"), &err));
  ASSERT_EQ("", err);
  ASSERT_TRUE(plan_.more_to_do());

  Edge* edge;
  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat in
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat mid1 mid2
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_FALSE(edge); // done
}

// Test that two outputs from one rule can eventually be routed to another.
TEST_F(PlanTest, DoubleOutputIndirect) {
  AssertParse(&state_,
"build out: cat b1 b2\n"
"build b1: cat a1\n"
"build b2: cat a2\n"
"build a1 a2: cat in\n");
  GetNode("a1")->MarkDirty();
  GetNode("a2")->MarkDirty();
  GetNode("b1")->MarkDirty();
  GetNode("b2")->MarkDirty();
  GetNode("out")->MarkDirty();
  string err;
  EXPECT_TRUE(plan_.AddTarget(GetNode("out"), &err));
  ASSERT_EQ("", err);
  ASSERT_TRUE(plan_.more_to_do());

  Edge* edge;
  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat in
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat a1
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat a2
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat b1 b2
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_FALSE(edge); // done
}

// Test that two edges from one output can both execute.
TEST_F(PlanTest, DoubleDependent) {
  AssertParse(&state_,
"build out: cat a1 a2\n"
"build a1: cat mid\n"
"build a2: cat mid\n"
"build mid: cat in\n");
  GetNode("mid")->MarkDirty();
  GetNode("a1")->MarkDirty();
  GetNode("a2")->MarkDirty();
  GetNode("out")->MarkDirty();

  string err;
  EXPECT_TRUE(plan_.AddTarget(GetNode("out"), &err));
  ASSERT_EQ("", err);
  ASSERT_TRUE(plan_.more_to_do());

  Edge* edge;
  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat in
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat mid
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat mid
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_TRUE(edge); // cat a1 a2
  plan_.EdgeFinished(edge);

  edge = plan_.FindWork();
  ASSERT_FALSE(edge); // done
}

TEST_F(PlanTest, DependencyCycle) {
  AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n"
"build in: cat pre\n"
"build pre: cat out\n");
  GetNode("out")->MarkDirty();
  GetNode("mid")->MarkDirty();
  GetNode("in")->MarkDirty();
  GetNode("pre")->MarkDirty();

  string err;
  EXPECT_FALSE(plan_.AddTarget(GetNode("out"), &err));
  ASSERT_EQ("dependency cycle: out -> mid -> in -> pre -> out", err);
}

struct BuildTest : public StateTestWithBuiltinRules,
                   public CommandRunner {
  BuildTest() : config_(MakeConfig()),
                builder_(&state_, config_, NULL, &fs_),
                now_(1), last_command_(NULL), status_(config_) {
    builder_.command_runner_.reset(this);
    AssertParse(&state_,
"build cat1: cat in1\n"
"build cat2: cat in1 in2\n"
"build cat12: cat cat1 cat2\n");

    fs_.Create("in1", now_, "");
    fs_.Create("in2", now_, "");
  }

  ~BuildTest() {
    builder_.command_runner_.release();
  }

  // Mark a path dirty.
  void Dirty(const string& path);

  // CommandRunner impl
  virtual bool CanRunMore();
  virtual bool StartCommand(Edge* edge);
  virtual Edge* WaitForCommand(ExitStatus* status, string* output);
  virtual vector<Edge*> GetActiveEdges();
  virtual void Abort();

  BuildConfig MakeConfig() {
    BuildConfig config;
    config.verbosity = BuildConfig::QUIET;
    return config;
  }

  BuildConfig config_;
  VirtualFileSystem fs_;
  Builder builder_;
  int now_;

  vector<string> commands_ran_;
  Edge* last_command_;
  BuildStatus status_;
};

void BuildTest::Dirty(const string& path) {
  Node* node = GetNode(path);
  node->MarkDirty();

  // If it's an input file, mark that we've already stat()ed it and
  // it's missing.
  if (!node->in_edge())
    node->MarkMissing();
}

bool BuildTest::CanRunMore() {
  // Only run one at a time.
  return last_command_ == NULL;
}

bool BuildTest::StartCommand(Edge* edge) {
  assert(!last_command_);
  commands_ran_.push_back(edge->EvaluateCommand());
  if (edge->rule().name() == "cat" ||
      edge->rule().name() == "cat_rsp" ||
      edge->rule().name() == "cc" ||
      edge->rule().name() == "touch" ||
      edge->rule().name() == "touch-interrupt") {
    for (vector<Node*>::iterator out = edge->outputs_.begin();
         out != edge->outputs_.end(); ++out) {
      fs_.Create((*out)->path(), now_, "");
    }
  } else if (edge->rule().name() == "true" ||
             edge->rule().name() == "fail" ||
             edge->rule().name() == "interrupt") {
    // Don't do anything.
  } else {
    printf("unknown command\n");
    return false;
  }

  last_command_ = edge;
  return true;
}

Edge* BuildTest::WaitForCommand(ExitStatus* status, string* /* output */) {
  if (Edge* edge = last_command_) {
    if (edge->rule().name() == "interrupt" ||
        edge->rule().name() == "touch-interrupt") {
      *status = ExitInterrupted;
      return NULL;
    }

    if (edge->rule().name() == "fail")
      *status = ExitFailure;
    else
      *status = ExitSuccess;
    last_command_ = NULL;
    return edge;
  }
  *status = ExitFailure;
  return NULL;
}

vector<Edge*> BuildTest::GetActiveEdges() {
  vector<Edge*> edges;
  if (last_command_)
    edges.push_back(last_command_);
  return edges;
}

void BuildTest::Abort() {
  last_command_ = NULL;
}

TEST_F(BuildTest, NoWork) {
  string err;
  EXPECT_TRUE(builder_.AlreadyUpToDate());
}

TEST_F(BuildTest, OneStep) {
  // Given a dirty target with one ready input,
  // we should rebuild the target.
  Dirty("cat1");
  string err;
  EXPECT_TRUE(builder_.AddTarget("cat1", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);

  ASSERT_EQ(1u, commands_ran_.size());
  EXPECT_EQ("cat in1 > cat1", commands_ran_[0]);
}

TEST_F(BuildTest, OneStep2) {
  // Given a target with one dirty input,
  // we should rebuild the target.
  Dirty("cat1");
  string err;
  EXPECT_TRUE(builder_.AddTarget("cat1", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);

  ASSERT_EQ(1u, commands_ran_.size());
  EXPECT_EQ("cat in1 > cat1", commands_ran_[0]);
}

TEST_F(BuildTest, TwoStep) {
  string err;
  EXPECT_TRUE(builder_.AddTarget("cat12", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);
  ASSERT_EQ(3u, commands_ran_.size());
  // Depending on how the pointers work out, we could've ran
  // the first two commands in either order.
  EXPECT_TRUE((commands_ran_[0] == "cat in1 > cat1" &&
               commands_ran_[1] == "cat in1 in2 > cat2") ||
              (commands_ran_[1] == "cat in1 > cat1" &&
               commands_ran_[0] == "cat in1 in2 > cat2"));

  EXPECT_EQ("cat cat1 cat2 > cat12", commands_ran_[2]);

  now_++;

  // Modifying in2 requires rebuilding one intermediate file
  // and the final file.
  fs_.Create("in2", now_, "");
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("cat12", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(5u, commands_ran_.size());
  EXPECT_EQ("cat in1 in2 > cat2", commands_ran_[3]);
  EXPECT_EQ("cat cat1 cat2 > cat12", commands_ran_[4]);
}

TEST_F(BuildTest, TwoOutputs) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule touch\n"
" command = touch $out\n"
"build out1 out2: touch in.txt\n"));

  fs_.Create("in.txt", now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
  EXPECT_EQ("touch out1 out2", commands_ran_[0]);
}

// Test case from
// https://github.com/martine/ninja/issues/148
TEST_F(BuildTest, MultiOutIn) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule touch\n"
" command = touch $out\n"
"build in1 otherfile: touch in\n"
"build out: touch in | in1\n"));

  fs_.Create("in", now_, "");
  fs_.Create("in1", ++now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("out", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);
}

TEST_F(BuildTest, Chain) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build c2: cat c1\n"
"build c3: cat c2\n"
"build c4: cat c3\n"
"build c5: cat c4\n"));

  fs_.Create("c1", now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("c5", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);
  ASSERT_EQ(4u, commands_ran_.size());

  err.clear();
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("c5", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());

  now_++;

  fs_.Create("c3", now_, "");
  err.clear();
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("c5", &err));
  ASSERT_EQ("", err);
  EXPECT_FALSE(builder_.AlreadyUpToDate());
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(2u, commands_ran_.size()); // 3->4, 4->5
}

TEST_F(BuildTest, MissingInput) {
  // Input is referenced by build file, but no rule for it.
  string err;
  Dirty("in1");
  EXPECT_FALSE(builder_.AddTarget("cat1", &err));
  EXPECT_EQ("'in1', needed by 'cat1', missing and no known rule to make it",
            err);
}

TEST_F(BuildTest, MissingTarget) {
  // Target is not referenced by build file.
  string err;
  EXPECT_FALSE(builder_.AddTarget("meow", &err));
  EXPECT_EQ("unknown target: 'meow'", err);
}

TEST_F(BuildTest, MakeDirs) {
  string err;

#ifdef _WIN32
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_, "build subdir\\dir2\\file: cat in1\n"));
  EXPECT_TRUE(builder_.AddTarget("subdir\\dir2\\file", &err));
#else
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_, "build subdir/dir2/file: cat in1\n"));
  EXPECT_TRUE(builder_.AddTarget("subdir/dir2/file", &err));
#endif

  EXPECT_EQ("", err);
  now_ = 0; // Make all stat()s return file not found.
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(2u, fs_.directories_made_.size());
  EXPECT_EQ("subdir", fs_.directories_made_[0]);
#ifdef _WIN32
  EXPECT_EQ("subdir\\dir2", fs_.directories_made_[1]);
#else
  EXPECT_EQ("subdir/dir2", fs_.directories_made_[1]);
#endif
}

TEST_F(BuildTest, DepFileMissing) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n command = cc $in\n depfile = $out.d\n"
"build foo.o: cc foo.c\n"));
  fs_.Create("foo.c", now_, "");

  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, fs_.files_read_.size());
  EXPECT_EQ("foo.o.d", fs_.files_read_[0]);
}

TEST_F(BuildTest, DepFileOK) {
  string err;
  int orig_edges = state_.edges_.size();
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n command = cc $in\n depfile = $out.d\n"
"build foo.o: cc foo.c\n"));
  Edge* edge = state_.edges_.back();

  fs_.Create("foo.c", now_, "");
  GetNode("bar.h")->MarkDirty(); // Mark bar.h as missing.
  fs_.Create("foo.o.d", now_, "foo.o: blah.h bar.h\n");
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, fs_.files_read_.size());
  EXPECT_EQ("foo.o.d", fs_.files_read_[0]);

  // Expect three new edges: one generating foo.o, and two more from
  // loading the depfile.
  ASSERT_EQ(orig_edges + 3, (int)state_.edges_.size());
  // Expect our edge to now have three inputs: foo.c and two headers.
  ASSERT_EQ(3u, edge->inputs_.size());

  // Expect the command line we generate to only use the original input.
  ASSERT_EQ("cc foo.c", edge->EvaluateCommand());
}

TEST_F(BuildTest, DepFileParseError) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n command = cc $in\n depfile = $out.d\n"
"build foo.o: cc foo.c\n"));
  fs_.Create("foo.c", now_, "");
  fs_.Create("foo.o.d", now_, "randomtext\n");
  EXPECT_FALSE(builder_.AddTarget("foo.o", &err));
  EXPECT_EQ("expected depfile 'foo.o.d' to mention 'foo.o', got 'randomtext'",
            err);
}

TEST_F(BuildTest, OrderOnlyDeps) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n command = cc $in\n depfile = $out.d\n"
"build foo.o: cc foo.c || otherfile\n"));
  Edge* edge = state_.edges_.back();

  fs_.Create("foo.c", now_, "");
  fs_.Create("otherfile", now_, "");
  fs_.Create("foo.o.d", now_, "foo.o: blah.h bar.h\n");
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  ASSERT_EQ("", err);

  // One explicit, two implicit, one order only.
  ASSERT_EQ(4u, edge->inputs_.size());
  EXPECT_EQ(2, edge->implicit_deps_);
  EXPECT_EQ(1, edge->order_only_deps_);
  // Verify the inputs are in the order we expect
  // (explicit then implicit then orderonly).
  EXPECT_EQ("foo.c", edge->inputs_[0]->path());
  EXPECT_EQ("blah.h", edge->inputs_[1]->path());
  EXPECT_EQ("bar.h", edge->inputs_[2]->path());
  EXPECT_EQ("otherfile", edge->inputs_[3]->path());

  // Expect the command line we generate to only use the original input.
  ASSERT_EQ("cc foo.c", edge->EvaluateCommand());

  // explicit dep dirty, expect a rebuild.
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());

  now_++;

  // implicit dep dirty, expect a rebuild.
  fs_.Create("blah.h", now_, "");
  fs_.Create("bar.h", now_, "");
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());

  now_++;

  // order only dep dirty, no rebuild.
  fs_.Create("otherfile", now_, "");
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());

  // implicit dep missing, expect rebuild.
  fs_.RemoveFile("bar.h");
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
}

TEST_F(BuildTest, RebuildOrderOnlyDeps) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n command = cc $in\n"
"rule true\n command = true\n"
"build oo.h: cc oo.h.in\n"
"build foo.o: cc foo.c || oo.h\n"));

  fs_.Create("foo.c", now_, "");
  fs_.Create("oo.h.in", now_, "");

  // foo.o and order-only dep dirty, build both.
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(2u, commands_ran_.size());

  // all clean, no rebuild.
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());

  // order-only dep missing, build it only.
  fs_.RemoveFile("oo.h");
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
  ASSERT_EQ("cc oo.h.in", commands_ran_[0]);

  now_++;

  // order-only dep dirty, build it only.
  fs_.Create("oo.h.in", now_, "");
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("foo.o", &err));
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
  ASSERT_EQ("cc oo.h.in", commands_ran_[0]);
}

TEST_F(BuildTest, Phony) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat bar.cc\n"
"build all: phony out\n"));
  fs_.Create("bar.cc", now_, "");

  EXPECT_TRUE(builder_.AddTarget("all", &err));
  ASSERT_EQ("", err);

  // Only one command to run, because phony runs no command.
  EXPECT_FALSE(builder_.AlreadyUpToDate());
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
}

TEST_F(BuildTest, PhonyNoWork) {
  string err;
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat bar.cc\n"
"build all: phony out\n"));
  fs_.Create("bar.cc", now_, "");
  fs_.Create("out", now_, "");

  EXPECT_TRUE(builder_.AddTarget("all", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());
}

TEST_F(BuildTest, Fail) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule fail\n"
" command = fail\n"
"build out1: fail\n"));

  string err;
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  ASSERT_EQ("", err);

  EXPECT_FALSE(builder_.Build(&err));
  ASSERT_EQ(1u, commands_ran_.size());
  ASSERT_EQ("subcommand failed", err);
}

TEST_F(BuildTest, SwallowFailures) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule fail\n"
" command = fail\n"
"build out1: fail\n"
"build out2: fail\n"
"build out3: fail\n"
"build all: phony out1 out2 out3\n"));

  // Swallow two failures, die on the third.
  config_.failures_allowed = 3;

  string err;
  EXPECT_TRUE(builder_.AddTarget("all", &err));
  ASSERT_EQ("", err);

  EXPECT_FALSE(builder_.Build(&err));
  ASSERT_EQ(3u, commands_ran_.size());
  ASSERT_EQ("subcommands failed", err);
}

TEST_F(BuildTest, SwallowFailuresLimit) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule fail\n"
" command = fail\n"
"build out1: fail\n"
"build out2: fail\n"
"build out3: fail\n"
"build final: cat out1 out2 out3\n"));

  // Swallow ten failures; we should stop before building final.
  config_.failures_allowed = 11;

  string err;
  EXPECT_TRUE(builder_.AddTarget("final", &err));
  ASSERT_EQ("", err);

  EXPECT_FALSE(builder_.Build(&err));
  ASSERT_EQ(3u, commands_ran_.size());
  ASSERT_EQ("cannot make progress due to previous errors", err);
}

struct BuildWithLogTest : public BuildTest {
  BuildWithLogTest() {
    builder_.SetBuildLog(&build_log_);
  }

  BuildLog build_log_;
};

TEST_F(BuildWithLogTest, NotInLogButOnDisk) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule cc\n"
" command = cc\n"
"build out1: cc in\n"));

  // Create input/output that would be considered up to date when
  // not considering the command line hash.
  fs_.Create("in", now_, "");
  fs_.Create("out1", now_, "");
  string err;

  // Because it's not in the log, it should not be up-to-date until
  // we build again.
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  EXPECT_FALSE(builder_.AlreadyUpToDate());

  commands_ran_.clear();
  state_.Reset();

  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_TRUE(builder_.AlreadyUpToDate());
}

TEST_F(BuildWithLogTest, RestatTest) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule true\n"
" command = true\n"
" restat = 1\n"
"rule cc\n"
" command = cc\n"
" restat = 1\n"
"build out1: cc in\n"
"build out2: true out1\n"
"build out3: cat out2\n"));

  fs_.Create("out1", now_, "");
  fs_.Create("out2", now_, "");
  fs_.Create("out3", now_, "");

  now_++;

  fs_.Create("in", now_, "");

  // Do a pre-build so that there's commands in the log for the outputs,
  // otherwise, the lack of an entry in the build log will cause out3 to rebuild
  // regardless of restat.
  string err;
  EXPECT_TRUE(builder_.AddTarget("out3", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  commands_ran_.clear();
  state_.Reset();

  now_++;

  fs_.Create("in", now_, "");
  // "cc" touches out1, so we should build out2. But because "true" does not
  // touch out2, we should cancel the build of out3.
  EXPECT_TRUE(builder_.AddTarget("out3", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(2u, commands_ran_.size());

  // If we run again, it should be a no-op, because the build log has recorded
  // that we've already built out2 with an input timestamp of 2 (from out1).
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out3", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());

  now_++;

  fs_.Create("in", now_, "");

  // The build log entry should not, however, prevent us from rebuilding out2
  // if out1 changes.
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out3", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(2u, commands_ran_.size());
}

TEST_F(BuildWithLogTest, RestatMissingFile) {
  // If a restat rule doesn't create its output, and the output didn't
  // exist before the rule was run, consider that behavior equivalent
  // to a rule that doesn't modify its existent output file.

  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule true\n"
" command = true\n"
" restat = 1\n"
"rule cc\n"
" command = cc\n"
"build out1: true in\n"
"build out2: cc out1\n"));

  fs_.Create("in", now_, "");
  fs_.Create("out2", now_, "");

  // Do a pre-build so that there's commands in the log for the outputs,
  // otherwise, the lack of an entry in the build log will cause out2 to rebuild
  // regardless of restat.
  string err;
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ("", err);
  commands_ran_.clear();
  state_.Reset();

  now_++;
  fs_.Create("in", now_, "");
  fs_.Create("out2", now_, "");

  // Run a build, expect only the first command to run.
  // It doesn't touch its output (due to being the "true" command), so
  // we shouldn't run the dependent build.
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(1u, commands_ran_.size());
}

// Test scenario, in which an input file is removed, but output isn't changed
// https://github.com/martine/ninja/issues/295
TEST_F(BuildWithLogTest, RestatMissingInput) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
    "rule true\n"
    " command = true\n"
    " depfile = $out.d\n"
    " restat = 1\n"
    "rule cc\n"
    " command = cc\n"
    "build out1: true in\n"
    "build out2: cc out1\n"));

  // Create all necessary files
  fs_.Create("in", now_, "");

  // The implicit dependencies and the depfile itself
  // are newer than the output
  TimeStamp restat_mtime = ++now_;
  fs_.Create("out1.d", now_, "out1: will.be.deleted restat.file\n");
  fs_.Create("will.be.deleted", now_, "");
  fs_.Create("restat.file", now_, "");

  // Run the build, out1 and out2 get built
  string err;
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(2u, commands_ran_.size());

  // See that an entry in the logfile is created, capturing
  // the right mtime
  BuildLog::LogEntry * log_entry = build_log_.LookupByOutput("out1");
  ASSERT_TRUE(NULL != log_entry);
  ASSERT_EQ(restat_mtime, log_entry->restat_mtime);

  // Now remove a file, referenced from depfile, so that target becomes
  // dirty, but the output does not change
  fs_.RemoveFile("will.be.deleted");
  
  // Trigger the build again - only out1 gets built
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(1u, commands_ran_.size());

  // Check that the logfile entry remains correctly set
  log_entry = build_log_.LookupByOutput("out1");
  ASSERT_TRUE(NULL != log_entry);
  ASSERT_EQ(restat_mtime, log_entry->restat_mtime);
}

struct BuildDryRun : public BuildWithLogTest {
  BuildDryRun() {
    config_.dry_run = true;
  }
};

TEST_F(BuildDryRun, AllCommandsShown) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule true\n"
" command = true\n"
" restat = 1\n"
"rule cc\n"
" command = cc\n"
" restat = 1\n"
"build out1: cc in\n"
"build out2: true out1\n"
"build out3: cat out2\n"));

  fs_.Create("out1", now_, "");
  fs_.Create("out2", now_, "");
  fs_.Create("out3", now_, "");

  now_++;

  fs_.Create("in", now_, "");

  // "cc" touches out1, so we should build out2. But because "true" does not
  // touch out2, we should cancel the build of out3.
  string err;
  EXPECT_TRUE(builder_.AddTarget("out3", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(3u, commands_ran_.size());
}

// Test that RSP files are created when & where appropriate and deleted after
// successful execution.
TEST_F(BuildTest, RspFileSuccess)
{
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
    "rule cat_rsp\n"
    " command = cat $rspfile > $out\n"
    " rspfile = $rspfile\n"
    " rspfile_content = $long_command\n"
    "build out1: cat in\n"
    "build out2: cat_rsp in\n"
    " rspfile = out2.rsp\n"
    " long_command = Some very long command\n"));

  fs_.Create("out1", now_, "");
  fs_.Create("out2", now_, "");
  fs_.Create("out3", now_, "");

  now_++;

  fs_.Create("in", now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);

  size_t files_created = fs_.files_created_.size();
  size_t files_removed = fs_.files_removed_.size();

  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(2u, commands_ran_.size()); // cat + cat_rsp

  // The RSP file was created
  ASSERT_EQ(files_created + 1, fs_.files_created_.size());
  ASSERT_EQ(1u, fs_.files_created_.count("out2.rsp"));

  // The RSP file was removed
  ASSERT_EQ(files_removed + 1, fs_.files_removed_.size());
  ASSERT_EQ(1u, fs_.files_removed_.count("out2.rsp"));
}

// Test that RSP file is created but not removed for commands, which fail
TEST_F(BuildTest, RspFileFailure) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
    "rule fail\n"
    " command = fail\n"
    " rspfile = $rspfile\n"
    " rspfile_content = $long_command\n"
    "build out: fail in\n"
    " rspfile = out.rsp\n"
    " long_command = Another very long command\n"));

  fs_.Create("out", now_, "");
  now_++;
  fs_.Create("in", now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("out", &err));
  ASSERT_EQ("", err);

  size_t files_created = fs_.files_created_.size();
  size_t files_removed = fs_.files_removed_.size();

  EXPECT_FALSE(builder_.Build(&err));
  ASSERT_EQ("subcommand failed", err);
  ASSERT_EQ(1u, commands_ran_.size());

  // The RSP file was created
  ASSERT_EQ(files_created + 1, fs_.files_created_.size());
  ASSERT_EQ(1u, fs_.files_created_.count("out.rsp"));

  // The RSP file was NOT removed
  ASSERT_EQ(files_removed, fs_.files_removed_.size());
  ASSERT_EQ(0u, fs_.files_removed_.count("out.rsp"));

  // The RSP file contains what it should
  ASSERT_EQ("Another very long command", fs_.files_["out.rsp"].contents);
}

// Test that contens of the RSP file behaves like a regular part of
// command line, i.e. triggers a rebuild if changed
TEST_F(BuildWithLogTest, RspFileCmdLineChange) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
    "rule cat_rsp\n"
    " command = cat $rspfile > $out\n"
    " rspfile = $rspfile\n"
    " rspfile_content = $long_command\n"
    "build out: cat_rsp in\n"
    " rspfile = out.rsp\n"
    " long_command = Original very long command\n"));

  fs_.Create("out", now_, "");
  now_++;
  fs_.Create("in", now_, "");

  string err;
  EXPECT_TRUE(builder_.AddTarget("out", &err));
  ASSERT_EQ("", err);

  // 1. Build for the 1st time (-> populate log)
  EXPECT_TRUE(builder_.Build(&err));
  ASSERT_EQ(1u, commands_ran_.size());

  // 2. Build again (no change)
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out", &err));
  EXPECT_EQ("", err);
  ASSERT_TRUE(builder_.AlreadyUpToDate());

  // 3. Alter the entry in the logfile
  // (to simulate a change in the command line between 2 builds)
  BuildLog::LogEntry * log_entry = build_log_.LookupByOutput("out");
  ASSERT_TRUE(NULL != log_entry);
  ASSERT_NO_FATAL_FAILURE(AssertHash(
        "cat out.rsp > out;rspfile=Original very long command",
        log_entry->command_hash));
  log_entry->command_hash++; // Change the command hash to something else.
  // Now expect the target to be rebuilt
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out", &err));
  EXPECT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ(1u, commands_ran_.size());
}

TEST_F(BuildTest, InterruptCleanup) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"rule interrupt\n"
" command = interrupt\n"
"rule touch-interrupt\n"
" command = touch-interrupt\n"
"build out1: interrupt in1\n"
"build out2: touch-interrupt in2\n"));

  fs_.Create("out1", now_, "");
  fs_.Create("out2", now_, "");
  now_++;
  fs_.Create("in1", now_, "");
  fs_.Create("in2", now_, "");

  // An untouched output of an interrupted command should be retained.
  string err;
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  EXPECT_EQ("", err);
  EXPECT_FALSE(builder_.Build(&err));
  EXPECT_EQ("interrupted by user", err);
  builder_.Cleanup();
  EXPECT_EQ(now_-1, fs_.Stat("out1"));
  err = "";

  // A touched output of an interrupted command should be deleted.
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  EXPECT_EQ("", err);
  EXPECT_FALSE(builder_.Build(&err));
  EXPECT_EQ("interrupted by user", err);
  builder_.Cleanup();
  EXPECT_EQ(0, fs_.Stat("out2"));
}

TEST_F(BuildTest, PhonyWithNoInputs) {
  ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build nonexistent: phony\n"
"build out1: cat || nonexistent\n"
"build out2: cat nonexistent\n"));
  fs_.Create("out1", now_, "");
  fs_.Create("out2", now_, "");

  // out1 should be up to date even though its input is dirty, because its
  // order-only dependency has nothing to do.
  string err;
  EXPECT_TRUE(builder_.AddTarget("out1", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.AlreadyUpToDate());

  // out2 should still be out of date though, because its input is dirty.
  err.clear();
  commands_ran_.clear();
  state_.Reset();
  EXPECT_TRUE(builder_.AddTarget("out2", &err));
  ASSERT_EQ("", err);
  EXPECT_TRUE(builder_.Build(&err));
  EXPECT_EQ("", err);
  ASSERT_EQ(1u, commands_ran_.size());
}

TEST_F(BuildTest, StatusFormatReplacePlaceholder) {
  EXPECT_EQ("[%/s0/t0/r0/u0/f0]",
            status_.FormatProgressStatus("[%%/s%s/t%t/r%r/u%u/f%f]"));
}
Something went wrong with that request. Please try again.