tools/gn/config_values_extractors_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <sstream>
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8 #include "tools/gn/config.h"
   9 #include "tools/gn/config_values_extractors.h"
  10 #include "tools/gn/target.h"
  11 #include "tools/gn/test_with_scope.h"
  12
  13 namespace {
  14
  15 struct FlagWriter {
  16   void operator()(const std::string& dir, std::ostream& out) const {
  17     out << dir << " ";
  18   }
  19 };
  20
  21 struct IncludeWriter {
  22   void operator()(const SourceDir& dir, std::ostream& out) const {
  23     out << dir.value() << " ";
  24   }
  25 };
  26
  27 }  // namespace
  28
  29 TEST(ConfigValuesExtractors, IncludeOrdering) {
  30   TestWithScope setup;
  31
  32   // Construct a chain of dependencies: target -> dep1 -> dep2
  33   // Add representative values: cflags (opaque, always copied) and include_dirs
  34   // (uniquified) to each one so we can check what comes out the other end.
  35
  36   // Set up dep2, direct and all dependent configs.
  37   Config dep2_all(setup.settings(), Label(SourceDir("//dep2/"), "all"));
  38   dep2_all.config_values().cflags().push_back("--dep2-all");
  39   dep2_all.config_values().include_dirs().push_back(SourceDir("//dep2/all/"));
  40
  41   Config dep2_direct(setup.settings(), Label(SourceDir("//dep2/"), "direct"));
  42   dep2_direct.config_values().cflags().push_back("--dep2-direct");
  43   dep2_direct.config_values().include_dirs().push_back(
  44       SourceDir("//dep2/direct/"));
  45
  46   Target dep2(setup.settings(), Label(SourceDir("//dep2/"), "dep2"));
  47   dep2.set_output_type(Target::SOURCE_SET);
  48   dep2.all_dependent_configs().push_back(LabelConfigPair(&dep2_all));
  49   dep2.direct_dependent_configs().push_back(LabelConfigPair(&dep2_direct));
  50
  51   // Set up dep1, direct and all dependent configs.
  52   Config dep1_all(setup.settings(), Label(SourceDir("//dep1/"), "all"));
  53   dep1_all.config_values().cflags().push_back("--dep1-all");
  54   dep1_all.config_values().include_dirs().push_back(SourceDir("//dep1/all/"));
  55
  56   Config dep1_direct(setup.settings(), Label(SourceDir("//dep1/"), "direct"));
  57   dep1_direct.config_values().cflags().push_back("--dep1-direct");
  58   dep1_direct.config_values().include_dirs().push_back(
  59       SourceDir("//dep1/direct/"));
  60
  61   Target dep1(setup.settings(), Label(SourceDir("//dep1/"), "dep1"));
  62   dep1.set_output_type(Target::SOURCE_SET);
  63   dep1.all_dependent_configs().push_back(LabelConfigPair(&dep1_all));
  64   dep1.direct_dependent_configs().push_back(LabelConfigPair(&dep1_direct));
  65   dep1.deps().push_back(LabelTargetPair(&dep2));
  66
  67   // Set up target, direct and all dependent configs.
  68   Config target_all(setup.settings(), Label(SourceDir("//target/"), "all"));
  69   target_all.config_values().cflags().push_back("--target-all");
  70   target_all.config_values().include_dirs().push_back(
  71       SourceDir("//target/all/"));
  72
  73   Config target_direct(setup.settings(),
  74                        Label(SourceDir("//target/"), "direct"));
  75   target_direct.config_values().cflags().push_back("--target-direct");
  76   target_direct.config_values().include_dirs().push_back(
  77       SourceDir("//target/direct/"));
  78
  79   // This config is applied directly to target.
  80   Config target_config(setup.settings(),
  81                        Label(SourceDir("//target/"), "config"));
  82   target_config.config_values().cflags().push_back("--target-config");
  83   target_config.config_values().include_dirs().push_back(
  84       SourceDir("//target/config/"));
  85
  86   Target target(setup.settings(), Label(SourceDir("//target/"), "target"));
  87   target.set_output_type(Target::SOURCE_SET);
  88   target.all_dependent_configs().push_back(LabelConfigPair(&target_all));
  89   target.direct_dependent_configs().push_back(LabelConfigPair(&target_direct));
  90   target.configs().push_back(LabelConfigPair(&target_config));
  91   target.deps().push_back(LabelTargetPair(&dep1));
  92
  93
  94   // Additionally add some values directly on "target".
  95   target.config_values().cflags().push_back("--target");
  96   target.config_values().include_dirs().push_back(
  97       SourceDir("//target/"));
  98
  99   // Mark targets resolved. This should push dependent configs.
 100   dep2.OnResolved();
 101   dep1.OnResolved();
 102   target.OnResolved();
 103
 104   // Verify cflags by serializing.
 105   std::ostringstream flag_out;
 106   FlagWriter flag_writer;
 107   RecursiveTargetConfigToStream<std::string, FlagWriter>(
 108       &target, &ConfigValues::cflags, flag_writer, flag_out);
 109   EXPECT_EQ(flag_out.str(),
 110             "--target --target-config --target-all --target-direct "
 111             "--dep1-all --dep2-all --dep1-direct ");
 112
 113   // Verify include dirs by serializing.
 114   std::ostringstream include_out;
 115   IncludeWriter include_writer;
 116   RecursiveTargetConfigToStream<SourceDir, IncludeWriter>(
 117       &target, &ConfigValues::include_dirs, include_writer, include_out);
 118   EXPECT_EQ(include_out.str(),
 119             "//target/ //target/config/ //target/all/ //target/direct/ "
 120             "//dep1/all/ //dep2/all/ //dep1/direct/ ");
 121 }