// Protocol Buffers - Google's data interchange format
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// http://code.google.com/p/protobuf/
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// Author: kenton@google.com (Kenton Varda)
//
// TODO(kenton): Share code with the versions of this test in other languages?
// It seemed like parameterizing it would add more complexity than it is
// worth.
#include <google/protobuf/compiler/cpp/cpp_generator.h>
#include <google/protobuf/compiler/command_line_interface.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/testing/googletest.h>
#include <gtest/gtest.h>
#include <google/protobuf/testing/file.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
namespace {
class TestGenerator : public CodeGenerator {
public:
TestGenerator() {}
~TestGenerator() {}
virtual bool Generate(const FileDescriptor* file,
const string& parameter,
GeneratorContext* context,
string* error) const {
TryInsert("test.pb.h", "includes", context);
TryInsert("test.pb.h", "namespace_scope", context);
TryInsert("test.pb.h", "global_scope", context);
TryInsert("test.pb.h", "class_scope:foo.Bar", context);
TryInsert("test.pb.h", "class_scope:foo.Bar.Baz", context);
TryInsert("test.pb.cc", "includes", context);
TryInsert("test.pb.cc", "namespace_scope", context);
TryInsert("test.pb.cc", "global_scope", context);
return true;
}
void TryInsert(const string& filename, const string& insertion_point,
GeneratorContext* context) const {
scoped_ptr<io::ZeroCopyOutputStream> output(
context->OpenForInsert(filename, insertion_point));
io::Printer printer(output.get(), '$');
printer.Print("// inserted $name$\n", "name", insertion_point);
}
};
// This test verifies that all the expected insertion points exist. It does
// not verify that they are correctly-placed; that would require actually
// compiling the output which is a bit more than I care to do for this test.
TEST(CppPluginTest, PluginTest) {
File::WriteStringToFileOrDie(
"syntax = \"proto2\";\n"
"package foo;\n"
"message Bar {\n"
" message Baz {}\n"
"}\n",
TestTempDir() + "/test.proto");
google::protobuf::compiler::CommandLineInterface cli;
cli.SetInputsAreProtoPathRelative(true);
CppGenerator cpp_generator;
TestGenerator test_generator;
cli.RegisterGenerator("--cpp_out", &cpp_generator, "");
cli.RegisterGenerator("--test_out", &test_generator, "");
string proto_path = "-I" + TestTempDir();
string cpp_out = "--cpp_out=" + TestTempDir();
string test_out = "--test_out=" + TestTempDir();
const char* argv[] = {
"protoc",
proto_path.c_str(),
cpp_out.c_str(),
test_out.c_str(),
"test.proto"
};
EXPECT_EQ(0, cli.Run(5, argv));
}
} // namespace
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google