Added test files for SystemInfo.m and OmahaXMLRequest.m.

chrome/installer/mac/app/testing/SystemInfo_test.mm

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "testing/gtest/include/gtest/gtest.h"
+
+#import "chrome/installer/mac/app/SystemInfo.h"
+
+namespace {
+
+class SystemInfoTest : public ::testing::Test {};
+
+TEST(SystemInfoTest, GetArchDoesNotReturnNil) {
+  EXPECT_TRUE([SystemInfo getArch]);
+}
+
+TEST(SystemInfoTest, GetArchReturnsAString) {
+  EXPECT_TRUE([[SystemInfo getArch] isKindOfClass:[NSString class]]);
+}
+
+TEST(SystemInfoTest, GetArchReturnsAtLeastThreeCharacters) {
+  EXPECT_GE((int)[[SystemInfo getArch] length], 3);
+}
+
+TEST(SystemInfoTest, GetOSVersionDoesNotReturnNil) {
+  EXPECT_TRUE([SystemInfo getOSVersion]);
+}
+
+TEST(SystemInfoTest, GetOSVersionReturnsAString) {
+  EXPECT_TRUE([[SystemInfo getOSVersion] isKindOfClass:[NSString class]]);
+}
+
+TEST(SystemInfoTest, GetOSVersionReturnsAtLeastThreeCharacters) {
+  EXPECT_GE((int)[[SystemInfo getOSVersion] length], 3);
+}
+
+TEST(SystemInfoTest, GetOSVersionContainsPeriodDelimiters) {
+  EXPECT_NE([[SystemInfo getOSVersion] rangeOfString:@"."
+                                             options:NSCaseInsensitiveSearch]
+                .location,
+            (unsigned)NSNotFound);
+}
+
+TEST(SystemInfoTest, GetOSVersionReturnsNumbers) {
+  NSArray* substrings =
+      [[SystemInfo getOSVersion] componentsSeparatedByString:@"."];
+  for (NSString* s in substrings) {
+    EXPECT_TRUE(([s intValue] != 0) || [s isEqualToString:@"0"]);
+  }
+}
+
+}  // namespace