Add testonly flag to GN

tools/gn/ninja_binary_target_writer_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sstream>
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "tools/gn/ninja_binary_target_writer.h"
 #include "tools/gn/target.h"
 #include "tools/gn/test_with_scope.h"
 
 TEST(NinjaBinaryTargetWriter, SourceSet) {
   TestWithScope setup;
+  Err err;
+
   setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
   setup.settings()->set_target_os(Settings::WIN);
 
   Target target(setup.settings(), Label(SourceDir("//foo/"), "bar"));
   target.set_output_type(Target::SOURCE_SET);
   target.sources().push_back(SourceFile("//foo/input1.cc"));
   target.sources().push_back(SourceFile("//foo/input2.cc"));
   // Also test object files, which should be just passed through to the
   // dependents to link.
   target.sources().push_back(SourceFile("//foo/input3.o"));
   target.sources().push_back(SourceFile("//foo/input4.obj"));
   target.SetToolchain(setup.toolchain());
-  target.OnResolved();
+  ASSERT_TRUE(target.OnResolved(&err));
 
   // Source set itself.
   {
     std::ostringstream out;
     NinjaBinaryTargetWriter writer(&target, out);
     writer.Run();
 
     const char expected[] =
         "defines =\n"
         "include_dirs =\n"
@@ skipping 13 matching lines @@
             "obj/foo/bar.input2.o ../../foo/input3.o ../../foo/input4.obj\n";
     std::string out_str = out.str();
     EXPECT_EQ(expected, out_str);
   }
 
   // A shared library that depends on the source set.
   Target shlib_target(setup.settings(), Label(SourceDir("//foo/"), "shlib"));
   shlib_target.set_output_type(Target::SHARED_LIBRARY);
   shlib_target.deps().push_back(LabelTargetPair(&target));
   shlib_target.SetToolchain(setup.toolchain());
-  shlib_target.OnResolved();
+  ASSERT_TRUE(shlib_target.OnResolved(&err));
 
   {
     std::ostringstream out;
     NinjaBinaryTargetWriter writer(&shlib_target, out);
     writer.Run();
 
     const char expected[] =
         "defines =\n"
         "include_dirs =\n"
         "cflags =\n"
@@ skipping 16 matching lines @@
         "  output_extension = .so\n";
     std::string out_str = out.str();
     EXPECT_EQ(expected, out_str);
   }
 
   // A static library that depends on the source set (should not link it).
   Target stlib_target(setup.settings(), Label(SourceDir("//foo/"), "stlib"));
   stlib_target.set_output_type(Target::STATIC_LIBRARY);
   stlib_target.deps().push_back(LabelTargetPair(&target));
   stlib_target.SetToolchain(setup.toolchain());
-  stlib_target.OnResolved();
+  ASSERT_TRUE(stlib_target.OnResolved(&err));
 
   {
     std::ostringstream out;
     NinjaBinaryTargetWriter writer(&stlib_target, out);
     writer.Run();
 
     const char expected[] =
         "defines =\n"
         "include_dirs =\n"
         "cflags =\n"
@@ skipping 14 matching lines @@
         "  output_extension = \n";
     std::string out_str = out.str();
     EXPECT_EQ(expected, out_str);
   }
 }
 
 // This tests that output extension overrides apply, and input dependencies
 // are applied.
 TEST(NinjaBinaryTargetWriter, ProductExtensionAndInputDeps) {
   TestWithScope setup;
+  Err err;
+
   setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
   setup.settings()->set_target_os(Settings::LINUX);
 
   // An action for our library to depend on.
   Target action(setup.settings(), Label(SourceDir("//foo/"), "action"));
   action.set_output_type(Target::ACTION_FOREACH);
   action.SetToolchain(setup.toolchain());
-  action.OnResolved();
+  ASSERT_TRUE(action.OnResolved(&err));
 
   // A shared library w/ the product_extension set to a custom value.
   Target target(setup.settings(), Label(SourceDir("//foo/"), "shlib"));
   target.set_output_type(Target::SHARED_LIBRARY);
   target.set_output_extension(std::string("so.6"));
   target.sources().push_back(SourceFile("//foo/input1.cc"));
   target.sources().push_back(SourceFile("//foo/input2.cc"));
   target.deps().push_back(LabelTargetPair(&action));
   target.SetToolchain(setup.toolchain());
-  target.OnResolved();
+  ASSERT_TRUE(target.OnResolved(&err));
 
   std::ostringstream out;
   NinjaBinaryTargetWriter writer(&target, out);
   writer.Run();
 
   const char expected[] =
       "defines =\n"
       "include_dirs =\n"
       "cflags =\n"
       "cflags_c =\n"
@@ skipping 18 matching lines @@
       "  ldflags =\n"
       "  libs =\n"
       "  output_extension = .so.6\n";
 
   std::string out_str = out.str();
   EXPECT_EQ(expected, out_str);
 }
 
 TEST(NinjaBinaryTargetWriter, EmptyProductExtension) {
   TestWithScope setup;
+  Err err;
+
   setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
   setup.settings()->set_target_os(Settings::LINUX);
 
   // This test is the same as ProductExtension, except that
   // we call set_output_extension("") and ensure that we still get the default.
   Target target(setup.settings(), Label(SourceDir("//foo/"), "shlib"));
   target.set_output_type(Target::SHARED_LIBRARY);
   target.set_output_extension(std::string());
   target.sources().push_back(SourceFile("//foo/input1.cc"));
   target.sources().push_back(SourceFile("//foo/input2.cc"));
 
   target.SetToolchain(setup.toolchain());
-  target.OnResolved();
+  ASSERT_TRUE(target.OnResolved(&err));
 
   std::ostringstream out;
   NinjaBinaryTargetWriter writer(&target, out);
   writer.Run();
 
   const char expected[] =
       "defines =\n"
       "include_dirs =\n"
       "cflags =\n"
       "cflags_c =\n"
       "cflags_cc =\n"
       "cflags_objc =\n"
       "cflags_objcc =\n"
       "root_out_dir = .\n"
       "target_out_dir = obj/foo\n"
       "target_output_name = libshlib\n"
       "\n"
       "build obj/foo/libshlib.input1.o: cxx ../../foo/input1.cc\n"
       "build obj/foo/libshlib.input2.o: cxx ../../foo/input2.cc\n"
       "\n"
       "build ./libshlib.so: solink obj/foo/libshlib.input1.o "
           "obj/foo/libshlib.input2.o\n"
       "  ldflags =\n"
       "  libs =\n"
       "  output_extension = .so\n";
 
   std::string out_str = out.str();
   EXPECT_EQ(expected, out_str);
 }