Run language tests on ie11, too to ensure it's not the test framework problem.

tools/bots/compiler.py

 #!/usr/bin/python
 
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # 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.
 
 """
 Dart2js buildbot steps
 
 Runs tests for the  dart2js compiler.
@@ skipping 118 matching lines @@
       system == 'linux' and platform.system() != 'Linux'):
     print ('Error: You cannot emulate a buildbot with a platform different '
         'from your own.')
     return None
   return bot.BuildInfo(compiler, runtime, mode, system, checked, host_checked,
                        minified, shard_index, total_shards, is_buildbot,
                        test_set, csp, arch, dart2js_full)
 
 
 def NeedsXterm(compiler, runtime):
-  return runtime in ['ie9', 'ie10', 'ie11', 'chrome', 'safari', 'opera', 
+  return runtime in ['ie9', 'ie10', 'ie11', 'chrome', 'safari', 'opera',
                      'ff', 'drt', 'dartium']
 
 
 def TestStepName(name, runtime, flags):
   # Filter out flags with '=' as this breaks the /stats feature of the
   # build bot.
   flags = [x for x in flags if not '=' in x]
   step_name = '%s-%s tests %s' % (name, runtime, ' '.join(flags))
   return step_name.strip()
 
@@ skipping 105 matching lines @@
   if runtime == 'd8':
     # The dart2js compiler isn't self-hosted (yet) so we run its
     # unit tests on the VM. We avoid doing this on the builders
     # that run the browser tests to cut down on the cycle time.
     unit_test_flags = [flag for flag in flags if flag.startswith('--shard')]
     # Run the unit tests in checked mode (the VM's checked mode).
     unit_test_flags.append('--checked')
     TestStep("dart2js_unit", mode, system, 'none', 'vm', ['dart2js'],
              unit_test_flags, arch)
 
-  if compiler == 'dart2js' and runtime in ['ie10', 'ie11']:
+  if compiler == 'dart2js' and runtime in ['ie10']:
     TestStep(compiler, mode, system, compiler, runtime,
              ['html', 'pkg', 'samples'], flags, arch)
+  elif compiler == 'dart2js' and runtime in ['ie11']:
+    #TODO(efortuna): Remove this branch.
+    TestStep(compiler, mode, system, compiler, runtime,
+             ['html', 'pkg', 'samples', 'language'], flags, arch)
   else:
     # Run the default set of test suites.
     TestStep(compiler, mode, system, compiler,
              runtime, [], flags, arch)
 
     if compiler == 'dart2js':
       # TODO(kasperl): Consider running peg and css tests too.
       extras = ['dart2js_extra', 'dart2js_native']
       extras_flags = flags
       if (system == 'linux'
@@ skipping 94 matching lines @@
   """
   with bot.BuildStep('Build SDK'):
     args = [sys.executable, './tools/build.py', '--mode=' + build_info.mode,
             '--arch=' + build_info.arch, 'dart2js_bot']
     print 'Build SDK and d8: %s' % (' '.join(args))
     bot.RunProcess(args)
 
 
 if __name__ == '__main__':
   bot.RunBot(GetBuildInfo, RunCompilerTests, build_step=BuildCompiler)