/thirdparty/breakpad/third_party/protobuf/protobuf/src/google/protobuf/compiler/cpp/cpp_plugin_unittest.cc

  1// Protocol Buffers - Google's data interchange format
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  3// http://code.google.com/p/protobuf/
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 30
 31// Author: kenton@google.com (Kenton Varda)
 32//
 33// TODO(kenton):  Share code with the versions of this test in other languages?
 34//   It seemed like parameterizing it would add more complexity than it is
 35//   worth.
 36
 37#include <google/protobuf/compiler/cpp/cpp_generator.h>
 38#include <google/protobuf/compiler/command_line_interface.h>
 39#include <google/protobuf/io/zero_copy_stream.h>
 40#include <google/protobuf/io/printer.h>
 41
 42#include <google/protobuf/testing/googletest.h>
 43#include <gtest/gtest.h>
 44#include <google/protobuf/testing/file.h>
 45
 46namespace google {
 47namespace protobuf {
 48namespace compiler {
 49namespace cpp {
 50namespace {
 51
 52class TestGenerator : public CodeGenerator {
 53 public:
 54  TestGenerator() {}
 55  ~TestGenerator() {}
 56
 57  virtual bool Generate(const FileDescriptor* file,
 58                        const string& parameter,
 59                        GeneratorContext* context,
 60                        string* error) const {
 61    TryInsert("test.pb.h", "includes", context);
 62    TryInsert("test.pb.h", "namespace_scope", context);
 63    TryInsert("test.pb.h", "global_scope", context);
 64    TryInsert("test.pb.h", "class_scope:foo.Bar", context);
 65    TryInsert("test.pb.h", "class_scope:foo.Bar.Baz", context);
 66
 67    TryInsert("test.pb.cc", "includes", context);
 68    TryInsert("test.pb.cc", "namespace_scope", context);
 69    TryInsert("test.pb.cc", "global_scope", context);
 70    return true;
 71  }
 72
 73  void TryInsert(const string& filename, const string& insertion_point,
 74                 GeneratorContext* context) const {
 75    scoped_ptr<io::ZeroCopyOutputStream> output(
 76      context->OpenForInsert(filename, insertion_point));
 77    io::Printer printer(output.get(), '$');
 78    printer.Print("// inserted $name$\n", "name", insertion_point);
 79  }
 80};
 81
 82// This test verifies that all the expected insertion points exist.  It does
 83// not verify that they are correctly-placed; that would require actually
 84// compiling the output which is a bit more than I care to do for this test.
 85TEST(CppPluginTest, PluginTest) {
 86  File::WriteStringToFileOrDie(
 87      "syntax = \"proto2\";\n"
 88      "package foo;\n"
 89      "message Bar {\n"
 90      "  message Baz {}\n"
 91      "}\n",
 92      TestTempDir() + "/test.proto");
 93
 94  google::protobuf::compiler::CommandLineInterface cli;
 95  cli.SetInputsAreProtoPathRelative(true);
 96
 97  CppGenerator cpp_generator;
 98  TestGenerator test_generator;
 99  cli.RegisterGenerator("--cpp_out", &cpp_generator, "");
100  cli.RegisterGenerator("--test_out", &test_generator, "");
101
102  string proto_path = "-I" + TestTempDir();
103  string cpp_out = "--cpp_out=" + TestTempDir();
104  string test_out = "--test_out=" + TestTempDir();
105
106  const char* argv[] = {
107    "protoc",
108    proto_path.c_str(),
109    cpp_out.c_str(),
110    test_out.c_str(),
111    "test.proto"
112  };
113
114  EXPECT_EQ(0, cli.Run(5, argv));
115}
116
117}  // namespace
118}  // namespace cpp
119}  // namespace compiler
120}  // namespace protobuf
121}  // namespace google