Use ICU case conversion/transliterator for case conversion behind a flag

test/intl/testcfg.py

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 import os
+import re
 
 from testrunner.local import testsuite
 from testrunner.objects import testcase
 
+FLAGS_PATTERN = re.compile(r"//\s+Flags:(.*)")
 
 class IntlTestSuite(testsuite.TestSuite):
 
   def __init__(self, name, root):
     super(IntlTestSuite, self).__init__(name, root)
 
   def ListTests(self, context):
     tests = []
     for dirname, dirs, files in os.walk(self.root):
       for dotted in [x for x in dirs if x.startswith('.')]:
         dirs.remove(dotted)
       dirs.sort()
       files.sort()
       for filename in files:
         if (filename.endswith(".js") and filename != "assert.js" and
             filename != "utils.js" and filename != "regexp-assert.js" and
             filename != "regexp-prepare.js"):
           fullpath = os.path.join(dirname, filename)
           relpath = fullpath[len(self.root) + 1 : -3]
           testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests
 
   def GetFlagsForTestCase(self, testcase, context):
+    source = self.GetSourceForTest(testcase)
     flags = ["--allow-natives-syntax"] + context.mode_flags
+    flags_match = re.findall(FLAGS_PATTERN, source)
+    for match in flags_match:
+      flags += match.strip().split()
 
     files = []
     files.append(os.path.join(self.root, "assert.js"))
     files.append(os.path.join(self.root, "utils.js"))
     files.append(os.path.join(self.root, "regexp-prepare.js"))
     files.append(os.path.join(self.root, testcase.path + self.suffix()))
     files.append(os.path.join(self.root, "regexp-assert.js"))
 
     flags += files
     if context.isolates:
       flags.append("--isolate")
       flags += files
 
     return testcase.flags + flags
 
+  def GetSourceForTest(self, testcase):
+    filename = os.path.join(self.root, testcase.path + self.suffix())
+    with open(filename) as f:
+      return f.read()
 
 def GetSuite(name, root):
   return IntlTestSuite(name, root)