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   Err err;
  32
  33   // Construct a chain of dependencies: target -> dep1 -> dep2
  34   // Add representative values: cflags (opaque, always copied) and include_dirs
  35   // (uniquified) to each one so we can check what comes out the other end.
  36
  37   // Set up dep2, direct and all dependent configs.
  38   Config dep2_all(setup.settings(), Label(SourceDir("//dep2/"), "all"));
  39   dep2_all.config_values().cflags().push_back("--dep2-all");
  40   dep2_all.config_values().include_dirs().push_back(SourceDir("//dep2/all/"));
  41
  42   Config dep2_direct(setup.settings(), Label(SourceDir("//dep2/"), "direct"));
  43   dep2_direct.config_values().cflags().push_back("--dep2-direct");
  44   dep2_direct.config_values().include_dirs().push_back(
  45       SourceDir("//dep2/direct/"));
  46
  47   Target dep2(setup.settings(), Label(SourceDir("//dep2/"), "dep2"));
  48   dep2.set_output_type(Target::SOURCE_SET);
  49   dep2.visibility().SetPublic();
  50   dep2.SetToolchain(setup.toolchain());
  51   dep2.all_dependent_configs().push_back(LabelConfigPair(&dep2_all));
  52   dep2.public_configs().push_back(LabelConfigPair(&dep2_direct));
  53
  54   // Set up dep1, direct and all dependent configs.
  55   Config dep1_all(setup.settings(), Label(SourceDir("//dep1/"), "all"));
  56   dep1_all.config_values().cflags().push_back("--dep1-all");
  57   dep1_all.config_values().include_dirs().push_back(SourceDir("//dep1/all/"));
  58
  59   Config dep1_direct(setup.settings(), Label(SourceDir("//dep1/"), "direct"));
  60   dep1_direct.config_values().cflags().push_back("--dep1-direct");
  61   dep1_direct.config_values().include_dirs().push_back(
  62       SourceDir("//dep1/direct/"));
  63
  64   Target dep1(setup.settings(), Label(SourceDir("//dep1/"), "dep1"));
  65   dep1.set_output_type(Target::SOURCE_SET);
  66   dep1.visibility().SetPublic();
  67   dep1.SetToolchain(setup.toolchain());
  68   dep1.all_dependent_configs().push_back(LabelConfigPair(&dep1_all));
  69   dep1.public_configs().push_back(LabelConfigPair(&dep1_direct));
  70   dep1.private_deps().push_back(LabelTargetPair(&dep2));
  71
  72   // Set up target, direct and all dependent configs.
  73   Config target_all(setup.settings(), Label(SourceDir("//target/"), "all"));
  74   target_all.config_values().cflags().push_back("--target-all");
  75   target_all.config_values().include_dirs().push_back(
  76       SourceDir("//target/all/"));
  77
  78   Config target_direct(setup.settings(),
  79                        Label(SourceDir("//target/"), "direct"));
  80   target_direct.config_values().cflags().push_back("--target-direct");
  81   target_direct.config_values().include_dirs().push_back(
  82       SourceDir("//target/direct/"));
  83
  84   // This config is applied directly to target.
  85   Config target_config(setup.settings(),
  86                        Label(SourceDir("//target/"), "config"));
  87   target_config.config_values().cflags().push_back("--target-config");
  88   target_config.config_values().include_dirs().push_back(
  89       SourceDir("//target/config/"));
  90
  91   Target target(setup.settings(), Label(SourceDir("//target/"), "target"));
  92   target.set_output_type(Target::SOURCE_SET);
  93   target.SetToolchain(setup.toolchain());
  94   target.all_dependent_configs().push_back(LabelConfigPair(&target_all));
  95   target.public_configs().push_back(LabelConfigPair(&target_direct));
  96   target.configs().push_back(LabelConfigPair(&target_config));
  97   target.private_deps().push_back(LabelTargetPair(&dep1));
  98
  99
 100   // Additionally add some values directly on "target".
 101   target.config_values().cflags().push_back("--target");
 102   target.config_values().include_dirs().push_back(
 103       SourceDir("//target/"));
 104
 105   // Mark targets resolved. This should push dependent configs.
 106   ASSERT_TRUE(dep2.OnResolved(&err));
 107   ASSERT_TRUE(dep1.OnResolved(&err));
 108   ASSERT_TRUE(target.OnResolved(&err));
 109
 110   // Verify cflags by serializing.
 111   std::ostringstream flag_out;
 112   FlagWriter flag_writer;
 113   RecursiveTargetConfigToStream<std::string, FlagWriter>(
 114       &target, &ConfigValues::cflags, flag_writer, flag_out);
 115   EXPECT_EQ(flag_out.str(),
 116             "--target --target-config --target-all --target-direct "
 117             "--dep1-all --dep2-all --dep1-direct ");
 118
 119   // Verify include dirs by serializing.
 120   std::ostringstream include_out;
 121   IncludeWriter include_writer;
 122   RecursiveTargetConfigToStream<SourceDir, IncludeWriter>(
 123       &target, &ConfigValues::include_dirs, include_writer, include_out);
 124   EXPECT_EQ(include_out.str(),
 125             "//target/ //target/config/ //target/all/ //target/direct/ "
 126             "//dep1/all/ //dep2/all/ //dep1/direct/ ");
 127 }