Integrate leg as a component in test.py. Also update presubmit script to run tests with leg.

dart/tools/testing/architecture.py

Index: dart/tools/testing/architecture.py
===================================================================
--- dart/tools/testing/architecture.py	(revision 1186)
+++ dart/tools/testing/architecture.py	(working copy)
@@ -410,25 +410,20 @@
     fatal_static_type_errors = fatal_static_type_errors  # shutup lint!
     return None
 
+  def GetOptions(self):
+    return []
+
   def GetRunCommand(self, fatal_static_type_errors=False):
     """Returns a command line to execute for the test."""
     dart = self.GetExecutable()
-    test_name = os.path.basename(self.test)
-    test_path = os.path.abspath(self.test)
-    command = [dart] + self.vm_options
-    if self.mode == 'release':
-      command += ['--optimize']
-    (classname, extension) = os.path.splitext(test_name)
+    command = [dart] + self.GetOptions() + self.vm_options
+    if fatal_static_type_errors:
+      command += self.GetFatalTypeErrorsFlags()
+
     if self.dart_options:
       command += self.dart_options
-    elif extension == '.dart':
-      if fatal_static_type_errors:
-        command += self.GetFatalTypeErrorsFlags()
-      if '_' in classname:
-        (classname, unused_sep, unused_tag) = classname.rpartition('_')
-      command += [test_path]
     else:
-      command += ['--', test_path]
+      command += [self.test]
 
     return command
 
@@ -443,6 +438,19 @@
     return
 
 
+class LegArchitecture(StandaloneArchitecture):
+
+  def __init__(self, root_path, arch, mode, component, test):
+    super(LegArchitecture, self).__init__(root_path, arch, mode, component,
+                                          test)
+  def GetOptions(self):
+    return ['--enable_leg']
+
+  def GetExecutable(self):
+    """Returns the path to the Dart test runner (executes the .dart file)."""
+    return utils.GetDartRunner(self.mode, self.arch, 'frog')
+
+
 # Long term, we should do the running machinery that is currently in
 # DartRunner.java
 class DartcArchitecture(StandaloneArchitecture):
@@ -451,19 +459,17 @@
   def __init__(self, root_path, arch, mode, component, test):
     super(DartcArchitecture, self).__init__(root_path, arch, mode, component, test)
 
+  def GetOptions(self):
+    if self.mode == 'release': return ['--optimize']
+    return []
+
   def GetFatalTypeErrorsFlags(self):
     return ['--fatal-type-errors']
 
   def HasFatalTypeErrors(self):
     return True
 
-  def GetRunCommand(self, fatal_static_type_errors=False):
-    """Returns a command line to execute for the test."""
-    cmd = super(DartcArchitecture, self).GetRunCommand(
-        fatal_static_type_errors)
-    return cmd
 
-
 def ExecutePipedCommand(cmd, verbose):
   """Execute a command in a subprocess."""
   if verbose:
@@ -494,5 +500,8 @@
   elif component in ['vm', 'frog', 'frogsh']:
     return StandaloneArchitecture(root_path, arch, mode, component, test)
 
+  elif component == 'leg':
+    return LegArchitecture(root_path, arch, mode, component, test)
+
   elif component == 'dartc':
     return DartcArchitecture(root_path, arch, mode, component, test)