circuitpython remount tester

log.txt

-----[ Test start ]-----
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount()
    error: "function missing 1 required positional arguments"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/")
    error: "'readonly' argument required"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", False)
    error: "None"
can read "testfile": True, error: "None"
can write "testfile": True, error: "None"
----------------
storage.remount("/", True)
    error: "None"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", readonly=False)
    error: "None"
can read "testfile": True, error: "None"
can write "testfile": True, error: "None"
----------------
storage.remount("/", readonly=True)
    error: "None"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", False, readonly=True)
    error: "extra keyword arguments given"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", True, readonly=False)
    error: "extra keyword arguments given"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", False, True)
    error: "extra positional arguments given"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", readonly=False, False)
    error: "non-keyword arg after keyword arg"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
storage.remount("/", readonly=False, derp=True)
    error: "extra keyword arguments given"
can read "testfile": True, error: "None"
can write "testfile": False, error: "30"
----------------
-----[ Test end ]-----

storage_test.py

import board
import digitalio
import os
import storage
import sys
import time


def read_test(path):
    try:
        with open(path, "rb") as inf:
            data = inf.read()
        return (True, None)
    except Exception as e:
        return (False, e)


def write_test(path):
    try:
        with open(path, "wb") as outf:
            outf.write(b"test")
        return (True, None)
    except Exception as e:
        return (False, e)


def test(path):
    report_str = "can %%s \"%s\": %%s, error: \"%%s\"" %(path)
    read_result, read_err = read_test(path)
    write_result, write_err = write_test(path)
    return [
        report_str %("read", read_result, read_err),
        report_str %("write", write_result, write_err)
    ]


def main():
    led = digitalio.DigitalInOut(board.D13)
    led.direction = digitalio.Direction.OUTPUT
    led.value = 1

    mnt = "/"
    testfile = "testfile"
    logfile = "log.txt"

    if logfile in os.listdir(mnt):
        print("%s exists, not running tests." %(logfile))
        led.value = 0
        sys.exit()

    parameters = (
        "",
        "\"%s\"" %(mnt),
        "\"%s\", False" %(mnt),
        "\"%s\", True" %(mnt),
        "\"%s\", readonly=False" %(mnt),
        "\"%s\", readonly=True" %(mnt),
        "\"%s\", False, readonly=True" %(mnt),
        "\"%s\", True, readonly=False" %(mnt),
        "\"%s\", False, True" %(mnt),
        "\"%s\", readonly=False, False" %(mnt),
        "\"%s\", readonly=False, derp=True" %(mnt),
    )

    log = []

    log.append("-----[ Test start ]-----")
    log.extend(test(testfile))
    log.append("----------------")

    for p in parameters:
        # yes, eval is bad, but I don't want to repeat this test block len(parameters) times
        eval_str = "storage.remount(%s)" %(p)
        log.append(eval_str)
        try:
            eval(eval_str)
            err = None
        except Exception as e:
            err = e
        log.append("    error: \"%s\"" %(err))
        log.extend(test(testfile))
        log.append("----------------")
        time.sleep(0.5)

    log.append("-----[ Test end ]-----")

    try:
        storage.remount('/', False)
        with open(logfile, "wb") as outf:
            outf.write('\n'.join(log))
        storage.remount('/', True)
        logfile_write_fail = False
    except RuntimeError:
        logfile_write_fail = True

    led.value = 0

    if logfile_write_fail:
        while 1:
            print('\n'.join(log))
            print("\n\n")
            time.sleep(1)



if __name__ == "__main__":
    main()