circuitpython/tests/micropython/heapalloc_bytesio2.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

22 lines
381 B
Python

# Creating BytesIO from immutable object should not immediately
# copy its content.
try:
import uio
import micropython
micropython.mem_total
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
data = b"1234" * 256
before = micropython.mem_total()
buf = uio.BytesIO(data)
after = micropython.mem_total()
print(after - before < len(data))