def test_plugins_build_properties(self):
        """ Checks that all plugins directories have a valid build.properties
            Run from <anything>/builder/build_utilities/<name>.py, processes <anything>/plugins/<various>
        """

        # go through all the plugins and check that their build.properties
        valid_count = error_count = 0
        patterns = ("javacDefaultEncoding.. *= *(utf|UTF)-8", "javacSource *= *1.6", "javacTarget *= *1.6", "javacProjectSettings *= *true")
        patterns_re = map(re.compile, patterns)
        for plugin_name in self.plugin_names():
            if plugin_name in self.BUILD_PROPERTIES_IGNORE:
                continue
            build_properties = os.path.join(self.plugins_dir, plugin_name, self.BUILD_PROPERTIES_NAME)
            pattern_found = [False,] * len(patterns)
            if not os.path.isfile(build_properties):
                print "ERROR: file does not exist for plugin %s (%s)" % (plugin_name, build_properties)
                error_count += 1
            else:
                build_properties_file = open(build_properties)
                try:
                    for line in build_properties_file.readlines():
                        for (index, pattern) in enumerate(patterns_re):
                            # print "%s %s %s %s" % (plugin_name, line, patterns[index], pattern.match(line.strip())) 
                            pattern_found[index] = pattern_found[index] or bool(pattern.match(line.strip()))
                finally:
                    build_properties_file.close()
                if all(pattern_found):
                    valid_count += 1
                    print "Valid: %s %s" % (plugin_name, self.BUILD_PROPERTIES_NAME)
                else:
                    print "ERROR: %s %s missing components" % (plugin_name, self.BUILD_PROPERTIES_NAME)
                    error_count += 1

        print "Plugins with %s valid %s, invalid = %s" % (self.BUILD_PROPERTIES_NAME, valid_count, error_count)
        sys.stdout.flush()
        self.failIf(error_count, "Some plugins had invalid or missing %s" % self.BUILD_PROPERTIES_NAME)