All imports are now tested to see if the test should be skipped,
UserFile.read is removed, and UserFile.readinto is made more efficient.
Signed-off-by: Damien George <damien@micropython.org>
These tests are specific to MicroPython so have a better home in the
micropython/ test subdir, and putting them here allows them to be run by
all targets, not just those that have access to the local filesystem (eg
the unix port).
Signed-off-by: Damien George <damien@micropython.org>