micropython/tests/basics/string_format2.py

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# comprehensive functionality test for {} format string
int_tests = False # these take a while
char_tests = True
str_tests = True
def test(fmt, *args):
print('{:8s}'.format(fmt) + '>' + fmt.format(*args) + '<')
def test_fmt(conv, fill, alignment, sign, prefix, width, precision, type, arg):
fmt = '{'
if conv:
fmt += '!'
fmt += conv
fmt += ':'
if alignment:
fmt += fill
fmt += alignment
fmt += sign
fmt += prefix
fmt += width
if precision:
fmt += '.'
fmt += precision
fmt += type
fmt += '}'
test(fmt, arg)
if fill == '0' and alignment == '=':
fmt = '{:'
fmt += sign
fmt += prefix
fmt += width
if precision:
fmt += '.'
fmt += precision
fmt += type
fmt += '}'
test(fmt, arg)
if int_tests:
int_nums = (-1234, -123, -12, -1, 0, 1, 12, 123, 1234, True, False)
#int_nums = (-12, -1, 0, 1, 12, True, False)
for type in ('', 'b', 'd', 'o', 'x', 'X'):
for width in ('', '1', '3', '5', '7'):
for alignment in ('', '<', '>', '=', '^'):
for fill in ('', ' ', '0', '@'):
for sign in ('', '+', '-', ' '):
for prefix in ('', '#'):
for num in int_nums:
test_fmt('', fill, alignment, sign, prefix, width, '', type, num)
if char_tests:
for width in ('', '1', '2'):
for alignment in ('', '<', '>', '^'):
for fill in ('', ' ', '0', '@'):
test_fmt('', fill, alignment, '', '', width, '', 'c', 48)
if str_tests:
for conv in ('', 'r', 's'):
for width in ('', '1', '4', '10'):
for alignment in ('', '<', '>', '^'):
for fill in ('', ' ', '0', '@'):
for str in ('', 'a', 'bcd', 'This is a test with a longer string'):
test_fmt(conv, fill, alignment, '', '', width, '', 's', str)