1 // Protocol Buffers - Google's data interchange format
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3 // https://developers.google.com/protocol-buffers/
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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 <memory>
38
39 #include <google/protobuf/compiler/cpp/cpp_generator.h>
40 #include <google/protobuf/compiler/command_line_interface.h>
41 #include <google/protobuf/io/zero_copy_stream.h>
42 #include <google/protobuf/io/printer.h>
43
44 #include <google/protobuf/testing/googletest.h>
45 #include <gtest/gtest.h>
46 #include <google/protobuf/testing/file.h>
47
48 namespace google {
49 namespace protobuf {
50 namespace compiler {
51 namespace cpp {
52 namespace {
53
54 class TestGenerator : public CodeGenerator {
55 public:
TestGenerator()56 TestGenerator() {}
~TestGenerator()57 ~TestGenerator() {}
58
Generate(const FileDescriptor * file,const string & parameter,GeneratorContext * context,string * error) const59 virtual bool Generate(const FileDescriptor* file,
60 const string& parameter,
61 GeneratorContext* context,
62 string* error) const {
63 TryInsert("test.pb.h", "includes", context);
64 TryInsert("test.pb.h", "namespace_scope", context);
65 TryInsert("test.pb.h", "global_scope", context);
66 TryInsert("test.pb.h", "class_scope:foo.Bar", context);
67 TryInsert("test.pb.h", "class_scope:foo.Bar.Baz", context);
68
69 TryInsert("test.pb.cc", "includes", context);
70 TryInsert("test.pb.cc", "namespace_scope", context);
71 TryInsert("test.pb.cc", "global_scope", context);
72 return true;
73 }
74
TryInsert(const string & filename,const string & insertion_point,GeneratorContext * context) const75 void TryInsert(const string& filename, const string& insertion_point,
76 GeneratorContext* context) const {
77 scoped_ptr<io::ZeroCopyOutputStream> output(
78 context->OpenForInsert(filename, insertion_point));
79 io::Printer printer(output.get(), '$');
80 printer.Print("// inserted $name$\n", "name", insertion_point);
81 }
82 };
83
84 // This test verifies that all the expected insertion points exist. It does
85 // not verify that they are correctly-placed; that would require actually
86 // compiling the output which is a bit more than I care to do for this test.
TEST(CppPluginTest,PluginTest)87 TEST(CppPluginTest, PluginTest) {
88 GOOGLE_CHECK_OK(File::SetContents(TestTempDir() + "/test.proto",
89 "syntax = \"proto2\";\n"
90 "package foo;\n"
91 "message Bar {\n"
92 " message Baz {}\n"
93 "}\n",
94 true));
95
96 google::protobuf::compiler::CommandLineInterface cli;
97 cli.SetInputsAreProtoPathRelative(true);
98
99 CppGenerator cpp_generator;
100 TestGenerator test_generator;
101 cli.RegisterGenerator("--cpp_out", &cpp_generator, "");
102 cli.RegisterGenerator("--test_out", &test_generator, "");
103
104 string proto_path = "-I" + TestTempDir();
105 string cpp_out = "--cpp_out=" + TestTempDir();
106 string test_out = "--test_out=" + TestTempDir();
107
108 const char* argv[] = {
109 "protoc",
110 proto_path.c_str(),
111 cpp_out.c_str(),
112 test_out.c_str(),
113 "test.proto"
114 };
115
116 EXPECT_EQ(0, cli.Run(5, argv));
117 }
118
119 } // namespace
120 } // namespace cpp
121 } // namespace compiler
122 } // namespace protobuf
123 } // namespace google
124