[GN] Add support for code signing to "create_bundle" targets.

tools/gn/ninja_create_bundle_target_writer_unittest.cc

Index: tools/gn/ninja_create_bundle_target_writer_unittest.cc
diff --git a/tools/gn/ninja_create_bundle_target_writer_unittest.cc b/tools/gn/ninja_create_bundle_target_writer_unittest.cc
index d35b519adc2649e7253469185763c05b7443b463..1c6f8e019947919430f852d08e7f865363636345 100644
--- a/tools/gn/ninja_create_bundle_target_writer_unittest.cc
+++ b/tools/gn/ninja_create_bundle_target_writer_unittest.cc
@@ -53,7 +53,6 @@ TEST(NinjaCreateBundleTargetWriter, Run) {
           "../../foo/input1.txt\n"
       "build bar.bundle/Resources/input2.txt: copy_bundle_data "
           "../../foo/input2.txt\n"
-      "\n"
       "build obj/baz/bar.stamp: stamp "
           "bar.bundle/Resources/input1.txt "
           "bar.bundle/Resources/input2.txt\n"
@@ -98,7 +97,6 @@ TEST(NinjaCreateBundleTargetWriter, AssetCatalog) {
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29.png "
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29@2x.png "
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29@3x.png\n"
-      "\n"
       "build obj/baz/bar.stamp: stamp bar.bundle/Resources/Assets.car\n"
       "build bar.bundle: phony obj/baz/bar.stamp\n";
   std::string out_str = out.str();
@@ -141,7 +139,6 @@ TEST(NinjaCreateBundleTargetWriter, BundleRootDirOutput) {
           "../../foo/input1.txt\n"
       "build bar.bundle/Contents/Resources/input2.txt: copy_bundle_data "
           "../../foo/input2.txt\n"
-      "\n"
       "build obj/baz/bar.stamp: stamp "
           "bar.bundle/Contents/Resources/input1.txt "
           "bar.bundle/Contents/Resources/input2.txt\n"
@@ -152,7 +149,7 @@ TEST(NinjaCreateBundleTargetWriter, BundleRootDirOutput) {
 
 // Tests complex target with multiple bundle_data sources, including
 // some asset catalog.
-TEST(NinjaCreateBundleTargetWriter, OrderOnlyDeps) {
+TEST(NinjaCreateBundleTargetWriter, ImplicitDeps) {
   TestWithScope setup;
   Err err;
 
@@ -203,14 +200,14 @@ TEST(NinjaCreateBundleTargetWriter, OrderOnlyDeps) {
           "../../foo/input1.txt\n"
       "build bar.bundle/Resources/input2.txt: copy_bundle_data "
           "../../foo/input2.txt\n"
-      "build bar.bundle/Info.plist: copy_bundle_data ../../qux/Info.plist\n"
+      "build bar.bundle/Info.plist: copy_bundle_data "
+          "../../qux/Info.plist\n"
       "build bar.bundle/Resources/Assets.car: compile_xcassets "
           "../../foo/Foo.xcassets | "
           "../../foo/Foo.xcassets/foo.imageset/Contents.json "
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29.png "
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29@2x.png "
           "../../foo/Foo.xcassets/foo.imageset/FooIcon-29@3x.png\n"
-      "\n"
       "build obj/baz/bar.stamp: stamp "
           "bar.bundle/Resources/input1.txt "
           "bar.bundle/Resources/input2.txt "
@@ -220,3 +217,82 @@ TEST(NinjaCreateBundleTargetWriter, OrderOnlyDeps) {
   std::string out_str = out.str();
   EXPECT_EQ(expected, out_str);
 }
+
+// Tests multiple files with an output pattern.
+TEST(NinjaCreateBundleTargetWriter, CodeSigning) {
+  TestWithScope setup;
+  Err err;
+
+  setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
+
+  // Simulate a binary build by another target. Since no toolchain is defined
+  // use an action instead of an executable target for simplicity.
+  Target binary(setup.settings(), Label(SourceDir("//baz/"), "quz"));
+  binary.set_output_type(Target::EXECUTABLE);
+  binary.visibility().SetPublic();
+  binary.sources().push_back(SourceFile("//baz/quz.c"));
+  binary.set_output_name("obj/baz/quz/bin");
+  binary.set_output_prefix_override(true);
+  binary.SetToolchain(setup.toolchain());
+  ASSERT_TRUE(binary.OnResolved(&err));
+
+  Target target(setup.settings(),
+      Label(SourceDir("//baz/"), "bar",
+      setup.toolchain()->label().dir(),
+      setup.toolchain()->label().name()));
+  target.set_output_type(Target::CREATE_BUNDLE);
+
+  SetupBundleDataDir(&target.bundle_data(), "//out/Debug");
+
+  std::vector<SourceFile> sources;
+  sources.push_back(SourceFile("//foo/input1.txt"));
+  sources.push_back(SourceFile("//foo/input2.txt"));
+  target.bundle_data().file_rules().push_back(BundleFileRule(
+      sources, SubstitutionPattern::MakeForTest(
+                   "{{bundle_resources_dir}}/{{source_file_part}}")));
+
+  target.bundle_data().set_code_signing_script(
+      SourceFile("//build/codesign.py"));
+  target.bundle_data().code_signing_sources().push_back(
+      SourceFile("//out/Debug/obj/baz/quz/bin"));
+  target.bundle_data().code_signing_outputs() = SubstitutionList::MakeForTest(
+      "//out/Debug/bar.bundle/quz",
+      "//out/Debug/bar.bundle/_CodeSignature/CodeResources");
+  target.bundle_data().code_signing_args() = SubstitutionList::MakeForTest(
+      "-b=obj/baz/quz/bin",
+      "bar.bundle");
+
+  target.public_deps().push_back(LabelTargetPair(&binary));
+
+  target.SetToolchain(setup.toolchain());
+  ASSERT_TRUE(target.OnResolved(&err));
+
+  std::ostringstream out;
+  NinjaCreateBundleTargetWriter writer(&target, out);
+  writer.Run();
+
+  const char expected[] =
+      "rule __baz_bar___toolchain_default__code_signing_rule\n"
+      "  command =  ../../build/codesign.py -b=obj/baz/quz/bin bar.bundle\n"
+      "  description = CODE SIGNING //baz:bar(//toolchain:default)\n"
+      "  restat = 1\n"
+      "\n"
+      "build bar.bundle/Resources/input1.txt: copy_bundle_data "
+          "../../foo/input1.txt\n"
+      "build bar.bundle/Resources/input2.txt: copy_bundle_data "
+          "../../foo/input2.txt\n"
+      "build obj/baz/bar.codesigning.inputdeps.stamp: stamp "
+          "../../build/codesign.py "
+          "obj/baz/quz/bin "
+          "bar.bundle/Resources/input1.txt "
+          "bar.bundle/Resources/input2.txt\n"
+      "build bar.bundle/quz bar.bundle/_CodeSignature/CodeResources: "
+          "__baz_bar___toolchain_default__code_signing_rule "
+          "| obj/baz/bar.codesigning.inputdeps.stamp\n"
+      "build obj/baz/bar.stamp: stamp "
+          "bar.bundle/quz "
+          "bar.bundle/_CodeSignature/CodeResources\n"
+      "build bar.bundle: phony obj/baz/bar.stamp\n";
+  std::string out_str = out.str();
+  EXPECT_EQ(expected, out_str);
+}