Add a small unit test that dumps system info.

We can use this in the trace gold tests to identify system properties.
The test uses Vulkan info collection when available and dumps out the
known GPU info as JSON.

Bug: angleproject:4090
Bug: b/168049670
Change-Id: Ib8d2244d82b650b94818da30adab180b471af556
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2427872
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>

gni/angle.gni

@@ -211,6 +211,7 @@ set_defaults("angle_test") {
   sources = []
   data = []
   defines = []
+  deps = []
   data_deps = []
   main = ""
   suppressed_configs = angle_remove_configs

src/tests/BUILD.gn

@@ -110,6 +110,16 @@ angle_common_test_utils("angle_common_test_utils_static") {
   angle_util = "angle_util_static"
 }
 
+# We use this in the restricted trace tests to load driver info.
+angle_test("angle_system_info_test") {
+  standalone_harness = true
+  sources = [ "angle_system_info_tests_main.cpp" ]
+  deps = [
+    "$angle_root:angle_gpu_info_util",
+    "$angle_root/util:angle_util_static",
+  ]
+}
+
 angle_test("angle_unittests") {
   sources = angle_unittests_sources
   main = "angle_unittest_main"
@@ -1307,6 +1317,7 @@ group("angle_tests") {
   deps = [
     ":angle_end2end_tests",
     ":angle_perftests",
+    ":angle_system_info_test",
     ":angle_unittests",
     "capture_replay_tests",
   ]

src/tests/angle_system_info_tests_main.cpp

@@ -0,0 +1,148 @@
+//
+// Copyright 2020 The ANGLE 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.
+//
+// Simple unit test suite that prints out system info as JSON.
+//
+// Example output for a Windows/NV machine:
+//
+// {
+//     "activeGPUIndex": 0,
+//     "isOptimus": false,
+//     "isMacSwitchable": false,
+//     "machineManufacturer": "",
+//     "machineModelVersion": "",
+//     "gpus": [
+//         {
+//             "vendorId": 4318,
+//             "deviceId": 7040,
+//             "driverVendor": "NVIDIA Corporation",
+//             "driverVersion": "452.6.0.0",
+//             "driverDate": "",
+//             "detailedDriverVersion": {
+//                 "major": 452,
+//                 "minor": 6,
+//                 "subMinor": 0,
+//                 "patch": 0
+//             }
+//         }
+//     ]
+// }
+
+#include "gpu_info_util/SystemInfo.h"
+
+#include <cstdlib>
+
+#include <gtest/gtest.h>
+
+#include <rapidjson/document.h>
+#include <rapidjson/prettywriter.h>
+#include <rapidjson/stringbuffer.h>
+
+namespace js = rapidjson;
+
+int main(int argc, char **argv)
+{
+    angle::SystemInfo info;
+
+    bool useVulkan = false;
+    bool listTests = false;
+
+    for (int arg = 1; arg < argc; ++arg)
+    {
+        if (strcmp(argv[arg], "--vulkan") == 0)
+        {
+            useVulkan = true;
+        }
+        else if (strcmp(argv[arg], "--gtest_list_tests") == 0)
+        {
+            listTests = true;
+        }
+    }
+
+    if (listTests)
+    {
+        testing::InitGoogleTest(&argc, argv);
+        return RUN_ALL_TESTS();
+    }
+
+    if (useVulkan)
+    {
+#if defined(ANGLE_ENABLE_VULKAN)
+        angle::GetSystemInfoVulkan(&info);
+#else
+        printf("Vulkan not supported.\n");
+        return EXIT_FAILURE;
+#endif  // defined(ANGLE_ENABLE_VULKAN)
+    }
+    else
+    {
+        angle::GetSystemInfo(&info);
+    }
+
+    js::Document doc;
+    doc.SetObject();
+
+    js::Document::AllocatorType &allocator = doc.GetAllocator();
+
+    doc.AddMember("activeGPUIndex", info.activeGPUIndex, allocator);
+    doc.AddMember("isOptimus", info.isOptimus, allocator);
+    doc.AddMember("isMacSwitchable", info.isMacSwitchable, allocator);
+
+    js::Value machineManufacturer;
+    machineManufacturer.SetString(info.machineManufacturer.c_str(), allocator);
+    doc.AddMember("machineManufacturer", machineManufacturer, allocator);
+
+    js::Value machineModelVersion;
+    machineModelVersion.SetString(info.machineModelVersion.c_str(), allocator);
+    doc.AddMember("machineModelVersion", machineModelVersion, allocator);
+
+    js::Value gpus;
+    gpus.SetArray();
+
+    for (const angle::GPUDeviceInfo &gpu : info.gpus)
+    {
+        js::Value obj;
+        obj.SetObject();
+
+        obj.AddMember("vendorId", gpu.vendorId, allocator);
+        obj.AddMember("deviceId", gpu.deviceId, allocator);
+
+        js::Value driverVendor;
+        driverVendor.SetString(gpu.driverVendor.c_str(), allocator);
+        obj.AddMember("driverVendor", driverVendor, allocator);
+
+        js::Value driverVersion;
+        driverVersion.SetString(gpu.driverVersion.c_str(), allocator);
+        obj.AddMember("driverVersion", driverVersion, allocator);
+
+        js::Value driverDate;
+        driverDate.SetString(gpu.driverDate.c_str(), allocator);
+        obj.AddMember("driverDate", driverDate, allocator);
+
+        js::Value versionInfo;
+        versionInfo.SetObject();
+        versionInfo.AddMember("major", gpu.detailedDriverVersion.major, allocator);
+        versionInfo.AddMember("minor", gpu.detailedDriverVersion.minor, allocator);
+        versionInfo.AddMember("subMinor", gpu.detailedDriverVersion.subMinor, allocator);
+        versionInfo.AddMember("patch", gpu.detailedDriverVersion.patch, allocator);
+        obj.AddMember("detailedDriverVersion", versionInfo, allocator);
+
+        gpus.PushBack(obj, allocator);
+    }
+
+    doc.AddMember("gpus", gpus, allocator);
+
+    js::StringBuffer buffer;
+    js::PrettyWriter<js::StringBuffer> writer(buffer);
+    doc.Accept(writer);
+
+    const char *output = buffer.GetString();
+    printf("%s\n", output);
+
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
+TEST(ANGLE, SystemInfo) {}