Add fields to platform library, implement them on runtime dart.

tests/standalone/io/platform_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file

[Anders Johnsen, 2013/10/24 08:30:08]

Move test to e.g. tests/lib/platform/os_test.dart.

[Bill Hesse, 2013/10/24 13:43:43]

Done.

 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "dart:async";
 import "dart:io";

[Anders Johnsen, 2013/10/24 08:30:08]

Remove io import.

[Bill Hesse, 2013/10/24 13:43:43]

Done.

 import "dart:isolate";
+import "dart:platform" as platform;
 
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 
 test() {
-  Expect.isTrue(Platform.numberOfProcessors > 0);
-  var os = Platform.operatingSystem;
+  Expect.isTrue(platform.numberOfProcessors > 0);
+  var os = platform.operatingSystem;
   Expect.isTrue(os == "android" || os == "linux" || os == "macos" ||
       os == "windows");
-  Expect.equals(Platform.isLinux, Platform.operatingSystem == "linux");
-  Expect.equals(Platform.isMacOS, Platform.operatingSystem == "macos");
-  Expect.equals(Platform.isWindows, Platform.operatingSystem == "windows");
-  Expect.equals(Platform.isAndroid, Platform.operatingSystem == "android");
-  var sep = Platform.pathSeparator;
+  Expect.equals(platform.isLinux, platform.operatingSystem == "linux");
+  Expect.equals(platform.isMacOS, platform.operatingSystem == "macos");
+  Expect.equals(platform.isWindows, platform.operatingSystem == "windows");
+  Expect.equals(platform.isAndroid, platform.operatingSystem == "android");
+  var sep = platform.pathSeparator;
   Expect.isTrue(sep == '/' || (os == 'windows' && sep == '\\'));
-  var hostname = Platform.localHostname;
+  var hostname = platform.localHostname;
   Expect.isTrue(hostname is String && hostname != "");
-  var environment = Platform.environment;
+  var environment = platform.environment;
   Expect.isTrue(environment is Map<String, String>);
-  Expect.isTrue(Platform.executable.contains('dart'));
-  Expect.isTrue(Platform.script.replaceAll('\\', '/').
+  Expect.isTrue(platform.executable.contains('dart'));
+  Expect.isTrue(platform.script.replaceAll('\\', '/').
                 endsWith('tests/standalone/io/platform_test.dart'));
-  Directory packageRoot = new Directory(Platform.packageRoot);
+  Directory packageRoot = new Directory(platform.packageRoot);
   Expect.isTrue(packageRoot.existsSync());
   Expect.isTrue(new Directory("${packageRoot.path}/expect").existsSync());
-  Expect.isTrue(Platform.executableArguments.any(
-      (arg) => arg.contains(Platform.packageRoot)));
+  Expect.isTrue(platform.executableArguments.any(
+      (arg) => arg.contains(platform.packageRoot)));
 }
 
 void f() {
   port.receive((msg, reply) {
-    if (msg == "Platform.executable") {
-      reply.send(Platform.executable);
+    if (msg == "platform.executable") {
+      reply.send(platform.executable);
     }
-    if (msg == "Platform.script") {
-      reply.send(Platform.script);
+    if (msg == "platform.script") {
+      reply.send(platform.script);
     }
-    if (msg == "Platform.packageRoot") {
-      reply.send(Platform.packageRoot);
+    if (msg == "platform.packageRoot") {
+      reply.send(platform.packageRoot);
     }
-    if (msg == "Platform.executableArguments") {
-      reply.send(Platform.executableArguments);
+    if (msg == "platform.executableArguments") {
+      reply.send(platform.executableArguments);
     }
     if (msg == "close") {
       reply.send("closed");
       port.close();
     }
   });
 }
 
 testIsolate() {
   asyncStart();
   var sendPort = spawnFunction(f);
-  Future.wait([sendPort.call("Platform.executable"),
-               sendPort.call("Platform.script"),
-               sendPort.call("Platform.packageRoot"),
-               sendPort.call("Platform.executableArguments")])
+  Future.wait([sendPort.call("platform.executable"),
+               sendPort.call("platform.script"),
+               sendPort.call("platform.packageRoot"),
+               sendPort.call("platform.executableArguments")])
   .then((results) {
-    Expect.equals(Platform.executable, results[0]);
+    Expect.equals(platform.executable, results[0]);
     Uri uri = Uri.parse(results[1]);
     Expect.equals("file", uri.scheme);
     Expect.isTrue(uri.path.endsWith('tests/standalone/io/platform_test.dart'));
-    Expect.equals(Platform.packageRoot, results[2]);
-    Expect.listEquals(Platform.executableArguments, results[3]);
+    Expect.equals(platform.packageRoot, results[2]);
+    Expect.listEquals(platform.executableArguments, results[3]);
     sendPort.call("close").then((_) => asyncEnd());
   });
 }
 
 main() {
   test();
   testIsolate();
 }