1 // Protocol Buffers - Google's data interchange format
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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
46 namespace google {
47 namespace protobuf {
48 namespace compiler {
49 namespace cpp {
50 namespace {
51
52 class TestGenerator : public CodeGenerator {
53 public:
TestGenerator()54 TestGenerator() {}
~TestGenerator()55 ~TestGenerator() {}
56
Generate(const FileDescriptor * file,const string & parameter,OutputDirectory * output_directory,string * error) const57 virtual bool Generate(const FileDescriptor* file,
58 const string& parameter,
59 OutputDirectory* output_directory,
60 string* error) const {
61 TryInsert("test.pb.h", "includes", output_directory);
62 TryInsert("test.pb.h", "namespace_scope", output_directory);
63 TryInsert("test.pb.h", "global_scope", output_directory);
64 TryInsert("test.pb.h", "class_scope:foo.Bar", output_directory);
65 TryInsert("test.pb.h", "class_scope:foo.Bar.Baz", output_directory);
66
67 TryInsert("test.pb.cc", "includes", output_directory);
68 TryInsert("test.pb.cc", "namespace_scope", output_directory);
69 TryInsert("test.pb.cc", "global_scope", output_directory);
70 return true;
71 }
72
TryInsert(const string & filename,const string & insertion_point,OutputDirectory * output_directory) const73 void TryInsert(const string& filename, const string& insertion_point,
74 OutputDirectory* output_directory) const {
75 scoped_ptr<io::ZeroCopyOutputStream> output(
76 output_directory->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.
TEST(CppPluginTest,PluginTest)85 TEST(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
122