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Improve error message for invalid types passed to pytest.approx() 

* Hide the internal traceback
* Use !r representation instead of !s (the default for {} formatting)
This commit is contained in:
Bruno Oliveira 2018-07-31 21:08:24 -03:00
parent 327fe4cfcc
commit bf7c188cc0
1 changed files with 3 additions and 1 deletions
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4
src/_pytest/python_api.py
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@ -34,7 +34,7 @@ def _cmp_raises_type_error(self, other):
def _non_numeric_type_error(value): def _non_numeric_type_error(value):
return TypeError( return TypeError(
"cannot make approximate comparisons to non-numeric values, e.g. {}".format( "cannot make approximate comparisons to non-numeric values, e.g. {!r}".format(
value value
) )
) )
@ -507,6 +507,8 @@ def approx(expected, rel=None, abs=None, nan_ok=False):
# class provides some convenient methods and overloads, but isn't really # class provides some convenient methods and overloads, but isn't really
# essential. # essential.
__tracebackhide__ = True
if isinstance(expected, Decimal): if isinstance(expected, Decimal):
cls = ApproxDecimal cls = ApproxDecimal
elif isinstance(expected, Number): elif isinstance(expected, Number):