feat(build): add `test.unit.dartvm` for a faster roundtrip of dartvm tests

gulpfile.js

@@ -497,6 +497,33 @@ gulp.task('test.unit.cjs', ['build/clean.js', 'build.tools'], function (neverDon
 });
 
 
+gulp.task('test.unit.dartvm', function (done) {
+  runSequence(
+    'build/tree.dart',
+    'build/pubspec.dart',
+    '!build/change_detect.dart',
+    '!test.unit.dartvm/run',
+    function(error) {
+      // if initial build failed (likely due to build or formatting step) then exit
+      // otherwise karma server doesn't start and we can't continue running properly
+      if (error) {
+        done(error);
+        return;
+      }
+
+      watch('modules/angular2/**', { ignoreInitial: true }, [
+        '!build/tree.dart',
+        '!test.unit.dartvm/run'
+      ]);
+    }
+  );
+});
+
+gulp.task('!test.unit.dartvm/run', runServerDartTests(gulp, gulpPlugins, {
+  dir: 'dist/dart/angular2'
+}));
+
+
 gulp.task('test.unit.tools/ci', function(done) {
   runJasmineTests(['dist/tools/**/*.spec.js', 'tools/**/*.spec.js'], done);
 });

tools/build/run_server_dart_tests.js

@@ -8,9 +8,14 @@ var util = require('./util');
 
 module.exports = function(gulp, plugins, config) {
   return function() {
-    return util.forEachSubDirSequential(
-      config.dest,
-      function(dir) {
+    if (config.dir) {
+      return run(config.dir);
+    } else {
+      return util.forEachSubDirSequential(config.dest, run);
+    }
+  };
+
+  function run(dir) {
     var testDir = path.join(dir, 'test');
     var relativeMasterTestFile = 'test/_all_tests.dart';
     var testFiles = [].slice.call(glob.sync('**/*.server.spec.dart', {
@@ -34,6 +39,7 @@ module.exports = function(gulp, plugins, config) {
 
     var defer = Q.defer();
     var done = defer.makeNodeResolver();
+    console.log('start tests');
     util.processToPromise(spawn('dart', ['-c', relativeMasterTestFile], {
       stdio: 'inherit',
       cwd: dir
@@ -41,8 +47,8 @@ module.exports = function(gulp, plugins, config) {
       function() { done(); },
       function(error) { done(error); }
     );
-        return defer.promise;
+    return defer.promise.then(function() {
+      console.log('end tests');
+    });
   }
-    );
-  };
 };