Merge pull request #199 from sass/fix-appveyor

Fix tests on Appveyor

.travis.yml

@@ -63,7 +63,7 @@ script:
   elif [ "$TASK" = tests ]; then
     if [ -z "$NODE_VERSION" ]; then
       echo "${bold}Running Dart tests against $(dart --version &> /dev/stdout).$none";
-      pub run test -x node -p vm;
+      pub run test -x node;
     else
       echo "${bold}Running Node tests against Node $(node --version).$none";
       pub run test -t node;

appveyor.yml

@@ -21,10 +21,14 @@ install:
       pub run grinder npm_package
     }
 
+# Run this as CMD because npm's stderr will cause PowerShell to think it failed.
+- IF "%NODE%"=="true" npm install
+
 # Don't run Node tests on Windows until dart-lang/sdk#30098 lands.
 test_script:
 - ps: >-
     If ($env:NODE -eq "true") {
+      # TODO(nweiz): "-p node" is currently broken. Figure out why.
       pub run test -p vm -t node
     } Else {
       pub run test -x node

test/synchronize_test.dart

@@ -2,6 +2,8 @@
 // MIT-style license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
+@TestOn('vm')
+
 import 'dart:convert';
 import 'dart:io';