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

chrome/installer/mac/app/BUILD.gn

 # 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.
 
-executable("downloader") {
+static_library("mac_installer_base") {
   sources = [
     "DownloadDelegate.m",
     "Downloader.m",
     "NetworkCommunication.m",
     "OmahaCommunication.m",
     "OmahaXMLParser.m",
     "OmahaXMLRequest.m",
     "SystemInfo.m",
+  ]
+}
+
+executable("mac_installer") {
+  sources = [
     "main.m",
   ]
+  deps = [
+    ":mac_installer_base",
+  ]
   libs = [ "Foundation.framework" ]
 }
+
+executable("mac_installer_test") {

[Mark Mentovai, 2016/07/19 21:03:49]

OK! Got a better answer here.

This should use the test() target type instead of executable(). That should take
care of the gtest dependencies for you. You’ll find examples in .gn files
elsewhere in the codebase.

[Anna Zeng, 2016/07/22 16:58:02]

Done.

+  testonly = true
+  sources = [
+    #    "//testing/gtest/src/gtest_main.cc",
+    "testing/OmahaXMLRequest_test.mm",
+    "testing/SystemInfo_test.mm",
+  ]
+  deps = [
+    ":mac_installer_base",
+    "//testing/gtest:gtest_main",

[Mark Mentovai, 2016/07/19 21:03:49]

And the answer on this one is to use //base/test:run_all_unittests instead of
gtest_main. (You can also remove the commented-out line 30.)

[Anna Zeng, 2016/07/22 16:58:02]

Done.

+  ]
+  libs = [ "Foundation.framework" ]
+}