mirror of https://github.com/ARMmbed/mbed-os.git
51 lines
1.7 KiB
Python
51 lines
1.7 KiB
Python
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"""
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mbed SDK
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Copyright (c) 2011-2013 ARM Limited
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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class DevNullTest():
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def check_readline(self, selftest, text):
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""" Reads line from serial port and checks if text was part of read string
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"""
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result = False
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c = selftest.mbed.serial_readline()
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if c and text in c:
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result = True
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return result
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def test(self, selftest):
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result = True
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# Test should print some text and later stop printing
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# 'MBED: re-routing stdout to /null'
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res = self.check_readline(selftest, "re-routing stdout to /null")
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if not res:
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# We haven't read preamble line
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result = False
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else:
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# Check if there are printed characters
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str = ''
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for i in range(3):
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c = selftest.mbed.serial_read(32)
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if c is None:
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return selftest.RESULT_IO_SERIAL
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else:
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str += c
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if len(str) > 0:
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result = False
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break
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selftest.notify("Received %d bytes: %s"% (len(str), str))
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return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE
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