Added first version of conformance tests.

Change-Id: Ib75664194491643f8e4f1503a2ed942a2d1e1655

1 files changed, 156 insertions, 0 deletions

diff --git a/conformance/conformance_cpp.cc b/conformance/conformance_cpp.cc
new file mode 100644
index 00000000..ff47fbbf
--- /dev/null
+++ b/conformance/conformance_cpp.cc
@@ -0,0 +1,156 @@
+// 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.
+
+#include <errno.h>
+#include <stdarg.h>
+#include <unistd.h>
+
+#include "conformance.pb.h"
+
+using std::string;
+using conformance::ConformanceRequest;
+using conformance::ConformanceResponse;
+using conformance::TestAllTypes;
+
+int test_count = 0;
+bool verbose = false;
+
+bool CheckedRead(int fd, void *buf, size_t len) {
+  size_t ofs = 0;
+  while (len > 0) {
+    ssize_t bytes_read = read(fd, (char*)buf + ofs, len);
+
+    if (bytes_read == 0) return false;
+
+    if (bytes_read < 0) {
+      GOOGLE_LOG(FATAL) << "Error reading from test runner: " <<  strerror(errno);
+    }
+
+    len -= bytes_read;
+    ofs += bytes_read;
+  }
+
+  return true;
+}
+
+void CheckedWrite(int fd, const void *buf, size_t len) {
+  if (write(fd, buf, len) != len) {
+    GOOGLE_LOG(FATAL) << "Error writing to test runner: " << strerror(errno);
+  }
+}
+
+void DoTest(const ConformanceRequest& request, ConformanceResponse* response) {
+  TestAllTypes test_message;
+
+  switch (request.payload_case()) {
+    case ConformanceRequest::kProtobufPayload:
+      if (!test_message.ParseFromString(request.protobuf_payload())) {
+        // Getting parse details would involve something like:
+        //   http://stackoverflow.com/questions/22121922/how-can-i-get-more-details-about-errors-generated-during-protobuf-parsing-c
+        response->set_parse_error("Parse error (no more details available).");
+        return;
+      }
+      break;
+
+    case ConformanceRequest::kJsonPayload:
+      response->set_runtime_error("JSON input is not yet supported.");
+      break;
+
+    case ConformanceRequest::PAYLOAD_NOT_SET:
+      GOOGLE_LOG(FATAL) << "Request didn't have payload.";
+      break;
+  }
+
+  switch (request.requested_output()) {
+    case ConformanceRequest::UNSPECIFIED:
+      GOOGLE_LOG(FATAL) << "Unspecified output format";
+      break;
+
+    case ConformanceRequest::PROTOBUF:
+      test_message.SerializeToString(response->mutable_protobuf_payload());
+      break;
+
+    case ConformanceRequest::JSON:
+      response->set_runtime_error("JSON output is not yet supported.");
+      break;
+  }
+}
+
+bool DoTestIo() {
+  string serialized_input;
+  string serialized_output;
+  ConformanceRequest request;
+  ConformanceResponse response;
+  uint32_t bytes;
+
+  if (!CheckedRead(STDIN_FILENO, &bytes, sizeof(uint32_t))) {
+    // EOF.
+    return false;
+  }
+
+  serialized_input.resize(bytes);
+
+  if (!CheckedRead(STDIN_FILENO, (char*)serialized_input.c_str(), bytes)) {
+    GOOGLE_LOG(ERROR) << "Unexpected EOF on stdin. " << strerror(errno);
+  }
+
+  if (!request.ParseFromString(serialized_input)) {
+    GOOGLE_LOG(FATAL) << "Parse of ConformanceRequest proto failed.";
+    return false;
+  }
+
+  DoTest(request, &response);
+
+  response.SerializeToString(&serialized_output);
+
+  bytes = serialized_output.size();
+  CheckedWrite(STDOUT_FILENO, &bytes, sizeof(uint32_t));
+  CheckedWrite(STDOUT_FILENO, serialized_output.c_str(), bytes);
+
+  if (verbose) {
+    fprintf(stderr, "conformance-cpp: request=%s, response=%s\n",
+            request.ShortDebugString().c_str(),
+            response.ShortDebugString().c_str());
+  }
+
+  test_count++;
+
+  return true;
+}
+
+int main() {
+  while (1) {
+    if (!DoTestIo()) {
+      fprintf(stderr, "conformance-cpp: received EOF from test runner "
+                      "after %d tests, exiting\n", test_count);
+      return 0;
+    }
+  }
+}