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79474c6b16
C's printf will pad nan/inf differently to CPython. Our implementation originally conformed to C, now it conforms to CPython's way. Tests for this are also added in this patch.
128 lines
4.7 KiB
Python
128 lines
4.7 KiB
Python
# Change the following to True to get a much more comprehensive set of tests
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# to run, albeit, which take considerably longer.
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full_tests = False
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def test(fmt, *args):
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print('{:8s}'.format(fmt) + '>' + fmt.format(*args) + '<')
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test("{:10.4e}", 123.456)
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test("{:10.4e}", -123.456)
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test("{:10.4f}", 123.456)
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test("{:10.4f}", -123.456)
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test("{:10.4g}", 123.456)
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test("{:10.4g}", -123.456)
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test("{:e}", 100)
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test("{:f}", 200)
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test("{:g}", 300)
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test("{:10.4E}", 123.456)
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test("{:10.4E}", -123.456)
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test("{:10.4F}", 123.456)
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test("{:10.4F}", -123.456)
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test("{:10.4G}", 123.456)
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test("{:10.4G}", -123.456)
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test("{:06e}", float("inf"))
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test("{:06e}", float("-inf"))
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test("{:06e}", float("nan"))
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# The following fails right now
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#test("{:10.1}", 0.0)
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def test_fmt(conv, fill, alignment, sign, prefix, width, precision, type, arg):
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fmt = '{'
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if conv:
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fmt += '!'
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fmt += conv
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fmt += ':'
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if alignment:
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fmt += fill
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fmt += alignment
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fmt += sign
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fmt += prefix
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fmt += width
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if precision:
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fmt += '.'
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fmt += precision
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fmt += type
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fmt += '}'
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test(fmt, arg)
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if fill == '0' and alignment == '=':
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fmt = '{:'
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fmt += sign
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fmt += prefix
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fmt += width
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if precision:
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fmt += '.'
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fmt += precision
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fmt += type
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fmt += '}'
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test(fmt, arg)
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eg_nums = (0.0, -0.0, 0.1, 1.234, 12.3459, 1.23456789, 123456789.0, -0.0,
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-0.1, -1.234, -12.3459, 1e4, 1e-4, 1e5, 1e-5, 1e6, 1e-6, 1e10,
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1e37, -1e37, 1e-37, -1e-37,
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1.23456e8, 1.23456e7, 1.23456e6, 1.23456e5, 1.23456e4, 1.23456e3, 1.23456e2, 1.23456e1, 1.23456e0,
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1.23456e-1, 1.23456e-2, 1.23456e-3, 1.23456e-4, 1.23456e-5, 1.23456e-6, 1.23456e-7, 1.23456e-8,
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-1.23456e8, -1.23456e7, -1.23456e6, -1.23456e5, -1.23456e4, -1.23456e3, -1.23456e2, -1.23456e1, -1.23456e0,
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-1.23456e-1, -1.23456e-2, -1.23456e-3, -1.23456e-4, -1.23456e-5, -1.23456e-6, -1.23456e-7, -1.23456e-8)
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if full_tests:
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for type in ('e', 'E', 'g', 'G', 'n'):
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for width in ('', '4', '6', '8', '10'):
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for alignment in ('', '<', '>', '=', '^'):
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for fill in ('', '@', '0', ' '):
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for sign in ('', '+', '-', ' '):
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for prec in ('', '1', '3', '6'):
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for num in eg_nums:
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test_fmt('', fill, alignment, sign, '', width, prec, type, num)
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# Note: We use 1.23459 rather than 1.2345 because '{:3f}'.format(1.2345)
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# rounds differently than print("%.3f", 1.2345);
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f_nums = (0.0, -0.0, 0.0001, 0.001, 0.01, 0.1, 1.0, 10.0,
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0.0012, 0.0123, 0.1234, 1.23459, 12.3456,
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-0.0001, -0.001, -0.01, -0.1, -1.0, -10.0,
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-0.0012, -0.0123, -0.1234, -1.23459, -12.3456)
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if full_tests:
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for type in ('f', 'F'):
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for width in ('', '4', '6', '8', '10'):
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for alignment in ('', '<', '>', '=', '^'):
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for fill in ('', ' ', '0', '@'):
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for sign in ('', '+', '-', ' '):
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# An empty precision defaults to 6, but when uPy is
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# configured to use a float, we can only use a
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# precision of 6 with numbers less than 10 and still
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# get results that compare to CPython (which uses
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# long doubles).
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for prec in ('1', '2', '3'):
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for num in f_nums:
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test_fmt('', fill, alignment, sign, '', width, prec, type, num)
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for num in int_nums2:
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test_fmt('', fill, alignment, sign, '', width, '', type, num)
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pct_nums1 = (0.1, 0.58, 0.99, -0.1, -0.58, -0.99)
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pct_nums2 = (True, False, 1, 0, -1)
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if full_tests:
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type = '%'
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for width in ('', '4', '6', '8', '10'):
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for alignment in ('', '<', '>', '=', '^'):
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for fill in ('', ' ', '0', '@'):
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for sign in ('', '+', '-', ' '):
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# An empty precision defaults to 6, but when uPy is
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# configured to use a float, we can only use a
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# precision of 6 with numbers less than 10 and still
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# get results that compare to CPython (which uses
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# long doubles).
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for prec in ('1', '2', '3'):
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for num in pct_nums1:
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test_fmt('', fill, alignment, sign, '', width, prec, type, num)
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for num in pct_nums2:
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test_fmt('', fill, alignment, sign, '', width, '', type, num)
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# We don't currently test a type of '' with floats (see the detailed comment
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# in objstr.c)
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