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third_party/crashpad/crashpad/util/mach/child_port_server_test.cc

Index: third_party/crashpad/crashpad/util/mach/child_port_server_test.cc
diff --git a/third_party/crashpad/crashpad/util/mach/child_port_server_test.cc b/third_party/crashpad/crashpad/util/mach/child_port_server_test.cc
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/mach/child_port_server.h"
+
+#include <string.h>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "util/mach/mach_extensions.h"
+#include "util/misc/implicit_cast.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+using testing::Eq;
+using testing::Pointee;
+using testing::Return;
+
+// Fake Mach ports. These aren’t used as ports in these tests, they’re just used
+// as cookies to make sure that the correct values get passed to the correct
+// places.
+const mach_port_t kServerLocalPort = 0x05050505;
+const mach_port_t kCheckInPort = 0x06060606;
+
+// Other fake values.
+const mach_msg_type_name_t kCheckInPortRightType = MACH_MSG_TYPE_PORT_SEND;
+const child_port_token_t kCheckInToken = 0xfedcba9876543210;
+
+// The definition of the request structure from child_port.h isn’t available
+// here. It needs custom initialization code, so duplicate the expected
+// definition of the structure from child_port.h here in this file, and provide
+// the initialization code as a method in true object-oriented fashion.
+
+struct __attribute__((packed, aligned(4))) ChildPortCheckInRequest {
+  ChildPortCheckInRequest() {
+    memset(this, 0xa5, sizeof(*this));
+    Head.msgh_bits =
+        MACH_MSGH_BITS(0, MACH_MSG_TYPE_PORT_SEND) | MACH_MSGH_BITS_COMPLEX;
+    Head.msgh_size = sizeof(*this) - sizeof(trailer);
+    Head.msgh_remote_port = MACH_PORT_NULL;
+    Head.msgh_local_port = kServerLocalPort;
+    Head.msgh_id = 10011;
+    msgh_body.msgh_descriptor_count = 1;
+    port.name = kCheckInPort;
+    port.disposition = kCheckInPortRightType;
+    port.type = MACH_MSG_PORT_DESCRIPTOR;
+    NDR = NDR_record;
+    token = kCheckInToken;
+  }
+
+  mach_msg_header_t Head;
+  mach_msg_body_t msgh_body;
+  mach_msg_port_descriptor_t port;
+  NDR_record_t NDR;
+  child_port_token_t token;
+  mach_msg_trailer_t trailer;
+};
+
+struct MIGReply : public mig_reply_error_t {
+  MIGReply() {
+    memset(this, 0x5a, sizeof(*this));
+    RetCode = KERN_FAILURE;
+  }
+
+  void Verify() {
+    EXPECT_EQ(implicit_cast<mach_msg_bits_t>(MACH_MSGH_BITS(0, 0)),
+              Head.msgh_bits);
+    EXPECT_EQ(sizeof(*this), Head.msgh_size);
+    EXPECT_EQ(kMachPortNull, Head.msgh_remote_port);
+    EXPECT_EQ(kMachPortNull, Head.msgh_local_port);
+    EXPECT_EQ(10111, Head.msgh_id);
+    EXPECT_EQ(0, memcmp(&NDR, &NDR_record, sizeof(NDR)));
+    EXPECT_EQ(MIG_NO_REPLY, RetCode);
+  }
+};
+
+class MockChildPortServerInterface : public ChildPortServer::Interface {
+ public:
+  MOCK_METHOD6(HandleChildPortCheckIn,
+               kern_return_t(child_port_server_t server,
+                             const child_port_token_t token,
+                             mach_port_t port,
+                             mach_msg_type_name_t right_type,
+                             const mach_msg_trailer_t* trailer,
+                             bool* destroy_request));
+};
+
+TEST(ChildPortServer, MockChildPortCheckIn) {
+  MockChildPortServerInterface server_interface;
+  ChildPortServer server(&server_interface);
+
+  std::set<mach_msg_id_t> expect_request_ids;
+  expect_request_ids.insert(10011);  // There is no constant for this.
+  EXPECT_EQ(expect_request_ids, server.MachMessageServerRequestIDs());
+
+  ChildPortCheckInRequest request;
+  EXPECT_EQ(request.Head.msgh_size, server.MachMessageServerRequestSize());
+
+  MIGReply reply;
+  EXPECT_EQ(sizeof(reply), server.MachMessageServerReplySize());
+
+  EXPECT_CALL(server_interface,
+              HandleChildPortCheckIn(kServerLocalPort,
+                                     kCheckInToken,
+                                     kCheckInPort,
+                                     kCheckInPortRightType,
+                                     Eq(&request.trailer),
+                                     Pointee(Eq(false))))
+      .WillOnce(Return(MIG_NO_REPLY))
+      .RetiresOnSaturation();
+
+  bool destroy_request = false;
+  EXPECT_TRUE(server.MachMessageServerFunction(
+      reinterpret_cast<mach_msg_header_t*>(&request),
+      reinterpret_cast<mach_msg_header_t*>(&reply),
+      &destroy_request));
+  EXPECT_FALSE(destroy_request);
+
+  reply.Verify();
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad