""" 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 DevNullTest(): def check_readline(self, selftest, text): """ Reads line from serial port and checks if text was part of read string """ result = False c = selftest.mbed.serial_readline() if c and text in c: result = True return result def test(self, selftest): result = True # Test should print some text and later stop printing # 'MBED: re-routing stdout to /null' res = self.check_readline(selftest, "re-routing stdout to /null") if not res: # We haven't read preamble line result = False else: # Check if there are printed characters str = '' for i in range(3): c = selftest.mbed.serial_read(32) if c is None: return selftest.RESULT_IO_SERIAL else: str += c if len(str) > 0: result = False break selftest.notify("Received %d bytes: %s"% (len(str), str)) return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE