Add SystemSnapshotMac and its test

snapshot/system_snapshot_mac_test.cc

Index: snapshot/system_snapshot_mac_test.cc
diff --git a/snapshot/system_snapshot_mac_test.cc b/snapshot/system_snapshot_mac_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1a548ef5786cd927f577eacb1cfd8500278a6f4f
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+++ b/snapshot/system_snapshot_mac_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 "snapshot/system_snapshot_mac.h"
+
+#include <sys/time.h>
+
+#include <string>
+
+#include "build/build_config.h"
+#include "gtest/gtest.h"
+#include "util/mac/mac_util.h"
+#include "util/mac/process_reader.h"
+#include "util/test/errors.h"
+
+namespace {
+
+using namespace crashpad;
+using namespace crashpad::test;
+
+// SystemSnapshotMac objects would be cumbersome to construct in each test that
+// requires one, because of the repetitive and mechanical work necessary to set
+// up a ProcessReader and timeval, along with the checks to verify that these
+// operations succeed. This test fixture class handles the initialization work
+// so that individual tests don’t have to.
+class SystemSnapshotMacTest : public testing::Test {
+ public:
+  SystemSnapshotMacTest()
+      : Test(),
+        process_reader_(),
+        snapshot_time_(),
+        system_snapshot_() {
+  }
+
+  const internal::SystemSnapshotMac& system_snapshot() const {
+    return system_snapshot_;
+  }
+
+  // testing::Test:
+  virtual void SetUp() override {
+    ASSERT_TRUE(process_reader_.Initialize(mach_task_self()));
+    ASSERT_EQ(0, gettimeofday(&snapshot_time_, NULL))
+        << ErrnoMessage("gettimeofday");
+    system_snapshot_.Initialize(&process_reader_, &snapshot_time_);
+  }
+
+ private:
+  ProcessReader process_reader_;
+  timeval snapshot_time_;
+  internal::SystemSnapshotMac system_snapshot_;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemSnapshotMacTest);
+};
+
+TEST_F(SystemSnapshotMacTest, GetCPUArchitecture) {
+  CPUArchitecture cpu_architecture = system_snapshot().GetCPUArchitecture();
+
+#if defined(ARCH_CPU_X86)
+  EXPECT_EQ(kCPUArchitectureX86, cpu_architecture);
+#elif defined(ARCH_CPU_X86_64)
+  EXPECT_EQ(kCPUArchitectureX86_64, cpu_architecture);
+#else
+#error port to your architecture
+#endif
+}
+
+TEST_F(SystemSnapshotMacTest, CPUCount) {
+  EXPECT_GE(system_snapshot().CPUCount(), 1);
+}
+
+TEST_F(SystemSnapshotMacTest, CPUVendor) {
+  std::string cpu_vendor = system_snapshot().CPUVendor();
+
+#if defined(ARCH_CPU_X86_FAMILY)
+  // Apple has only shipped Intel x86-family CPUs, but here’s a small nod to the
+  // “Hackintosh” crowd.
+  if (cpu_vendor != "GenuineIntel" && cpu_vendor != "AuthenticAMD") {
+    FAIL() << cpu_vendor;
+  }
+#else
+#error port to your architecture
+#endif
+}
+
+#if defined(ARCH_CPU_X86_FAMILY)
+
+TEST_F(SystemSnapshotMacTest, CPUX86SupportsDAZ) {
+  // All x86-family CPUs that Apple is known to have shipped should support DAZ.
+  EXPECT_TRUE(system_snapshot().CPUX86SupportsDAZ());
+}
+
+#endif
+
+TEST_F(SystemSnapshotMacTest, GetOperatingSystem) {
+  EXPECT_EQ(SystemSnapshot::kOperatingSystemMacOSX,
+            system_snapshot().GetOperatingSystem());
+}
+
+TEST_F(SystemSnapshotMacTest, OSVersion) {
+  int major;
+  int minor;
+  int bugfix;
+  std::string build;
+  system_snapshot().OSVersion(&major, &minor, &bugfix, &build);
+
+  EXPECT_EQ(10, major);
+  EXPECT_EQ(MacOSXMinorVersion(), minor);
+  EXPECT_FALSE(build.empty());
+}
+
+TEST_F(SystemSnapshotMacTest, OSVersionFull) {
+  EXPECT_FALSE(system_snapshot().OSVersionFull().empty());
+}
+
+TEST_F(SystemSnapshotMacTest, MachineDescription) {
+  EXPECT_FALSE(system_snapshot().MachineDescription().empty());
+}
+
+}  // namespace