circuitpython/tests/basics/io_stringio1.py

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try:
import uio as io
except ImportError:
import io
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a = io.StringIO()
print('io.StringIO' in repr(a))
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print(a.getvalue())
print(a.read())
a = io.StringIO("foobar")
print(a.getvalue())
print(a.read())
print(a.read())
a = io.StringIO()
a.write("foo")
print(a.getvalue())
a = io.StringIO("foo")
a.write("12")
print(a.getvalue())
a = io.StringIO("foo")
a.write("123")
print(a.getvalue())
a = io.StringIO("foo")
a.write("1234")
print(a.getvalue())
a = io.StringIO()
a.write("foo")
print(a.read())
a = io.StringIO()
a.close()
for f in [a.read, a.getvalue, lambda:a.write("")]:
# CPython throws for operations on closed I/O, MicroPython makes
# the underlying string empty unless MICROPY_CPYTHON_COMPAT defined
try:
f()
print("ValueError")
except ValueError:
print("ValueError")