File content as of revision 0:f269e3021894:

"""
mbed SDK
Copyright (c) 2011-2013 ARM Limited

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

class HelloTest():
    HELLO_WORLD = "Hello World"

    def test(self, selftest):
        c = selftest.mbed.serial_readline()
        if c is None:
           return selftest.RESULT_IO_SERIAL
        selftest.notify("Read %d bytes:"% len(c))
        selftest.notify(c.strip())

        result = True
        # Because we can have targetID here let's try to decode
        if len(c) < len(self.HELLO_WORLD):
            result = False
        else:
            result = self.HELLO_WORLD in c
        return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE