Revert of Delete unused code from systeminfo.

webrtc/base/systeminfo_unittest.cc

Index: webrtc/base/systeminfo_unittest.cc
diff --git a/webrtc/base/systeminfo_unittest.cc b/webrtc/base/systeminfo_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b1fc65e09166643fe4299575668382cb876fa7c5
--- /dev/null
+++ b/webrtc/base/systeminfo_unittest.cc
@@ -0,0 +1,150 @@
+/*
+ *  Copyright 2009 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/stringutils.h"
+#include "webrtc/base/systeminfo.h"
+
+#if defined(CPU_X86) || defined(CPU_ARM)
+TEST(SystemInfoTest, CpuVendorNonEmpty) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuVendor: " << info.GetCpuVendor();
+  EXPECT_FALSE(info.GetCpuVendor().empty());
+}
+
+// Tests Vendor identification is Intel or AMD.
+// See Also http://en.wikipedia.org/wiki/CPUID
+TEST(SystemInfoTest, CpuVendorIntelAMDARM) {
+  rtc::SystemInfo info;
+#if defined(CPU_X86)
+  EXPECT_TRUE(rtc::string_match(info.GetCpuVendor().c_str(),
+                                      "GenuineIntel") ||
+              rtc::string_match(info.GetCpuVendor().c_str(),
+                                      "AuthenticAMD"));
+#elif defined(CPU_ARM)
+  EXPECT_TRUE(rtc::string_match(info.GetCpuVendor().c_str(), "ARM"));
+#endif
+}
+#endif  // defined(CPU_X86) || defined(CPU_ARM)
+
+// Tests CpuArchitecture matches expectations.
+TEST(SystemInfoTest, GetCpuArchitecture) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuArchitecture: " << info.GetCpuArchitecture();
+  rtc::SystemInfo::Architecture architecture = info.GetCpuArchitecture();
+#if defined(CPU_X86) || defined(CPU_ARM)
+  if (sizeof(intptr_t) == 8) {
+    EXPECT_EQ(rtc::SystemInfo::SI_ARCH_X64, architecture);
+  } else if (sizeof(intptr_t) == 4) {
+#if defined(CPU_ARM)
+    EXPECT_EQ(rtc::SystemInfo::SI_ARCH_ARM, architecture);
+#else
+    EXPECT_EQ(rtc::SystemInfo::SI_ARCH_X86, architecture);
+#endif
+  }
+#endif
+}
+
+// Tests MachineModel is set.  On Mac test machine model is known.
+TEST(SystemInfoTest, MachineModelKnown) {
+  rtc::SystemInfo info;
+  EXPECT_FALSE(info.GetMachineModel().empty());
+  const char *machine_model = info.GetMachineModel().c_str();
+  LOG(LS_INFO) << "MachineModel: " << machine_model;
+  bool known = true;
+#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
+  // Full list as of May 2012.  Update when new OSX based models are added.
+  known = rtc::string_match(machine_model, "MacBookPro*") ||
+          rtc::string_match(machine_model, "MacBookAir*") ||
+          rtc::string_match(machine_model, "MacBook*") ||
+          rtc::string_match(machine_model, "MacPro*") ||
+          rtc::string_match(machine_model, "Macmini*") ||
+          rtc::string_match(machine_model, "iMac*") ||
+          rtc::string_match(machine_model, "Xserve*");
+#elif !defined(WEBRTC_IOS)
+  // All other machines return Not available.
+  known = rtc::string_match(info.GetMachineModel().c_str(),
+                                  "Not available");
+#endif
+  if (!known) {
+    LOG(LS_WARNING) << "Machine Model Unknown: " << machine_model;
+  }
+}
+
+// Tests physical memory size.
+TEST(SystemInfoTest, MemorySize) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "MemorySize: " << info.GetMemorySize();
+  EXPECT_GT(info.GetMemorySize(), -1);
+}
+
+// Tests number of logical cpus available to the system.
+TEST(SystemInfoTest, MaxCpus) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "MaxCpus: " << info.GetMaxCpus();
+  EXPECT_GT(info.GetMaxCpus(), 0);
+}
+
+// Tests number of logical cpus available to the process.
+TEST(SystemInfoTest, CurCpus) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CurCpus: " << info.GetCurCpus();
+  EXPECT_GT(info.GetCurCpus(), 0);
+  EXPECT_LE(info.GetCurCpus(), info.GetMaxCpus());
+}
+
+#ifdef CPU_X86
+// CPU family/model/stepping is only available on X86. The following tests
+// that they are set when running on x86 CPUs. Valid Family/Model/Stepping
+// values are non-zero on known CPUs.
+
+// Tests Intel CPU Family identification.
+TEST(SystemInfoTest, CpuFamily) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuFamily: " << info.GetCpuFamily();
+  EXPECT_GT(info.GetCpuFamily(), 0);
+}
+
+// Tests Intel CPU Model identification.
+TEST(SystemInfoTest, CpuModel) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuModel: " << info.GetCpuModel();
+  EXPECT_GT(info.GetCpuModel(), 0);
+}
+
+// Tests Intel CPU Stepping identification.
+TEST(SystemInfoTest, CpuStepping) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuStepping: " << info.GetCpuStepping();
+  EXPECT_GT(info.GetCpuStepping(), 0);
+}
+#else  // CPU_X86
+// If not running on x86 CPU the following tests expect the functions to
+// return 0.
+TEST(SystemInfoTest, CpuFamily) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuFamily: " << info.GetCpuFamily();
+  EXPECT_EQ(0, info.GetCpuFamily());
+}
+
+// Tests Intel CPU Model identification.
+TEST(SystemInfoTest, CpuModel) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuModel: " << info.GetCpuModel();
+  EXPECT_EQ(0, info.GetCpuModel());
+}
+
+// Tests Intel CPU Stepping identification.
+TEST(SystemInfoTest, CpuStepping) {
+  rtc::SystemInfo info;
+  LOG(LS_INFO) << "CpuStepping: " << info.GetCpuStepping();
+  EXPECT_EQ(0, info.GetCpuStepping());
+}
+#endif  // CPU_X86