[Isolates] Allow running multiple isolates in shell and use this in tests.

test/mjsunit/testcfg.py

Index: test/mjsunit/testcfg.py
diff --git a/test/mjsunit/testcfg.py b/test/mjsunit/testcfg.py
index d8fe24d37aaebf5a9c146b6d21ab303b86febcaa..c6c6b34a5af9bc00bd304acb48118eeb9f25976f 100644
--- a/test/mjsunit/testcfg.py
+++ b/test/mjsunit/testcfg.py
@@ -38,24 +38,31 @@ SELF_SCRIPT_PATTERN = re.compile(r"//\s+Env: TEST_FILE_NAME")
 
 class MjsunitTestCase(test.TestCase):
 
-  def __init__(self, path, file, mode, context, config):
+  def __init__(self, path, file, mode, context, config, isolates):
     super(MjsunitTestCase, self).__init__(context, path, mode)
     self.file = file
     self.config = config
     self.self_script = False
+    self.isolates = isolates
 
   def GetLabel(self):
     return "%s %s" % (self.mode, self.GetName())
 
   def GetName(self):
-    return self.path[-1]
+    return self.path[-1] + ["", "-isolates"][self.isolates]
 
-  def GetCommand(self):
+  def TestsIsolates(self):
+    return self.isolates
+
+  def GetVmCommand(self, source):
     result = self.config.context.GetVmCommand(self, self.mode)
-    source = open(self.file).read()
     flags_match = FLAGS_PATTERN.search(source)
     if flags_match:
       result += flags_match.group(1).strip().split()
+    return result
+
+  def GetVmArguments(self, source):
+    result = []
     additional_files = []
     files_match = FILES_PATTERN.search(source);
     # Accept several lines of 'Files:'
@@ -73,6 +80,15 @@ class MjsunitTestCase(test.TestCase):
     result += [framework, self.file]
     return result
 
+  def GetCommand(self):
+    source = open(self.file).read()
+    result = self.GetVmCommand(source)
+    result += self.GetVmArguments(source)
+    if self.isolates:
+      result.append("--isolate")
+      result += self.GetVmArguments(source)
+    return result
+
   def GetSource(self):
     return open(self.file).read()
 
@@ -116,7 +132,8 @@ class MjsunitTestConfiguration(test.TestConfiguration):
     for test in all_tests:
       if self.Contains(path, test):
         file_path = join(self.root, reduce(join, test[1:], "") + ".js")
-        result.append(MjsunitTestCase(test, file_path, mode, self.context, self))
+        result.append(MjsunitTestCase(test, file_path, mode, self.context, self, False))
+        result.append(MjsunitTestCase(test, file_path, mode, self.context, self, True))
     return result
 
   def GetBuildRequirements(self):