tool/mbed/mbed-sdk/workspace_tools/host_tests/stdio_auto.py

   1 """
   2 mbed SDK
   3 Copyright (c) 2011-2013 ARM Limited
   4
   5 Licensed under the Apache License, Version 2.0 (the "License");
   6 you may not use this file except in compliance with the License.
   7 You may obtain a copy of the License at
   8
   9     http://www.apache.org/licenses/LICENSE-2.0
  10
  11 Unless required by applicable law or agreed to in writing, software
  12 distributed under the License is distributed on an "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 See the License for the specific language governing permissions and
  15 limitations under the License.
  16 """
  17
  18 import re
  19 import random
  20 from time import time
  21
  22 class StdioTest():
  23     PATTERN_INT_VALUE = "Your value was: (-?\d+)"
  24     re_detect_int_value = re.compile(PATTERN_INT_VALUE)
  25
  26     def test(self, selftest):
  27         test_result = True
  28
  29         c = selftest.mbed.serial_readline() # {{start}} preamble
  30         if c is None:
  31             return selftest.RESULT_IO_SERIAL
  32         selftest.notify(c)
  33
  34         for i in range(0, 10):
  35             random_integer = random.randint(-99999, 99999)
  36             selftest.notify("HOST: Generated number: " + str(random_integer))
  37             start = time()
  38             selftest.mbed.serial_write(str(random_integer) + "\n")
  39
  40             serial_stdio_msg = selftest.mbed.serial_readline()
  41             if serial_stdio_msg is None:
  42                 return selftest.RESULT_IO_SERIAL
  43             delay_time = time() - start
  44             selftest.notify(serial_stdio_msg.strip())
  45
  46             # Searching for reply with scanned values
  47             m = self.re_detect_int_value.search(serial_stdio_msg)
  48             if m and len(m.groups()):
  49                 int_value = m.groups()[0]
  50                 int_value_cmp = random_integer == int(int_value)
  51                 test_result = test_result and int_value_cmp
  52                 selftest.notify("HOST: Number %s read after %.3f sec ... [%s]"% (int_value, delay_time, "OK" if int_value_cmp else "FAIL"))
  53             else:
  54                 test_result = False
  55                 break
  56         return selftest.RESULT_SUCCESS if test_result else selftest.RESULT_FAILURE