6 months, 2 weeks ago.
How to write mbed tests (greentea etc) that require keyboard input
1. I am new to writing tests on the mbed. I am using an mbed LPC1768 and mbed-cli on Ubuntu 16.04. I may like to use one mbed LPC1768 as the device under test, and another as a test fixture; or I may want the mbed under test to be connected to hardware in a robotics project for hardware in the loop testing.
2. I'd like to write tests in which I run the test, the mbed does something to connected hardware, I observe it worked right or not. It should then ask me if it worked, and I enter in the test result that way. For example, I ask the mbed to pair a receiver (requires an external transmitter) - I verify when it tries to pair the light goes blinky and the transmitter sees the receiver as visible and in the correct mode, I enter "y" at a prompt, and mbed asserts true / test passed.
3. I do not see a convenient way to prompt a user on a tty in such a way. I see utest_printf() to get messages injected into the -vv output; and I see a way to block and await a key value pair from the Python script but I don't see a simple way to do a scanf()?
4. Use cases: a. Pairing a receiver (writing tests within a library) - observe blinky lights etc and prompt user if it worked b. Testing actuators - send an actuator command and observe that actuator moves right and prompt user if it worked c. Test communications - have fixture send messages over CAN or Serial or whatever, and check that mbed under test properly received. d. Have test fixture mbed connected to a simulator, and have mbed under test control it while monitoriing for proper responses.
5. Am I using the Greentea unity utest framework correctly? Or would such things rather just be their own main.cpp test program with no use of Greentea etc.
To post an answer, please log in.