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Diffstat (limited to 'src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc')
| -rw-r--r-- | src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc b/src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc new file mode 100644 index 00000000..77451ab1 --- /dev/null +++ b/src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc @@ -0,0 +1,159 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. +// +// This test insures that google/protobuf/descriptor.pb.{h,cc} match exactly +// what would be generated by the protocol compiler. These files are not +// generated automatically at build time because they are compiled into the +// protocol compiler itself. So, if they were auto-generated, you'd have a +// chicken-and-egg problem. +// +// If this test fails, run the script +// "generate_descriptor_proto.sh" and add +// descriptor.pb.{h,cc} to your changelist. + +#include <map> + +#include <google/protobuf/compiler/cpp/cpp_generator.h> +#include <google/protobuf/compiler/importer.h> +#include <google/protobuf/descriptor.h> +#include <google/protobuf/io/zero_copy_stream_impl.h> +#include <google/protobuf/stubs/map_util.h> +#include <google/protobuf/stubs/stl_util.h> +#include <google/protobuf/stubs/strutil.h> +#include <google/protobuf/stubs/substitute.h> + +#include <google/protobuf/testing/file.h> +#include <google/protobuf/testing/file.h> +#include <google/protobuf/testing/googletest.h> +#include <gtest/gtest.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace cpp { + +namespace { + +class MockErrorCollector : public MultiFileErrorCollector { + public: + MockErrorCollector() {} + ~MockErrorCollector() {} + + string text_; + + // implements ErrorCollector --------------------------------------- + void AddError(const string& filename, int line, int column, + const string& message) { + strings::SubstituteAndAppend(&text_, "$0:$1:$2: $3\n", + filename, line, column, message); + } +}; + +class MockGeneratorContext : public GeneratorContext { + public: + MockGeneratorContext() {} + ~MockGeneratorContext() { + STLDeleteValues(&files_); + } + + void ExpectFileMatches(const string& virtual_filename, + const string& physical_filename) { + string* expected_contents = FindPtrOrNull(files_, virtual_filename); + ASSERT_TRUE(expected_contents != NULL) + << "Generator failed to generate file: " << virtual_filename; + + string actual_contents; + GOOGLE_CHECK_OK( + File::GetContents(TestSourceDir() + "/" + physical_filename, + &actual_contents, true)); + EXPECT_TRUE(actual_contents == *expected_contents) + << physical_filename << " needs to be regenerated. Please run " + "google/protobuf/compiler/release_compiler.sh and " + "generate_descriptor_proto.sh. Then add this file " + "to your CL."; + } + + // implements GeneratorContext -------------------------------------- + + virtual io::ZeroCopyOutputStream* Open(const string& filename) { + string** map_slot = &files_[filename]; + delete *map_slot; + *map_slot = new string; + + return new io::StringOutputStream(*map_slot); + } + + private: + map<string, string*> files_; +}; + +TEST(BootstrapTest, GeneratedDescriptorMatches) { + MockErrorCollector error_collector; + DiskSourceTree source_tree; + source_tree.MapPath("", TestSourceDir()); + Importer importer(&source_tree, &error_collector); + const FileDescriptor* proto_file = + importer.Import("google/protobuf/descriptor.proto"); + const FileDescriptor* plugin_proto_file = + importer.Import("google/protobuf/compiler/plugin.proto"); + EXPECT_EQ("", error_collector.text_); + ASSERT_TRUE(proto_file != NULL); + ASSERT_TRUE(plugin_proto_file != NULL); + + CppGenerator generator; + MockGeneratorContext context; + string error; + string parameter = "dllexport_decl=LIBPROTOBUF_EXPORT"; + ASSERT_TRUE(generator.Generate(proto_file, parameter, + &context, &error)); + parameter = "dllexport_decl=LIBPROTOC_EXPORT"; + ASSERT_TRUE(generator.Generate(plugin_proto_file, parameter, + &context, &error)); + + context.ExpectFileMatches("google/protobuf/descriptor.pb.h", + "google/protobuf/descriptor.pb.h"); + context.ExpectFileMatches("google/protobuf/descriptor.pb.cc", + "google/protobuf/descriptor.pb.cc"); + context.ExpectFileMatches("google/protobuf/compiler/plugin.pb.h", + "google/protobuf/compiler/plugin.pb.h"); + context.ExpectFileMatches("google/protobuf/compiler/plugin.pb.cc", + "google/protobuf/compiler/plugin.pb.cc"); +} + +} // namespace + +} // namespace cpp +} // namespace compiler +} // namespace protobuf +} // namespace google |