|
|
"""Tests for the Formatters."""
|
|
|
|
|
|
from math import pi
|
|
|
|
|
|
try:
|
|
|
import numpy
|
|
|
except:
|
|
|
numpy = None
|
|
|
import nose.tools as nt
|
|
|
|
|
|
from IPython.core.formatters import PlainTextFormatter, HTMLFormatter, _mod_name_key
|
|
|
from IPython.utils.io import capture_output
|
|
|
|
|
|
class A(object):
|
|
|
def __repr__(self):
|
|
|
return 'A()'
|
|
|
|
|
|
class B(A):
|
|
|
def __repr__(self):
|
|
|
return 'B()'
|
|
|
|
|
|
class C:
|
|
|
pass
|
|
|
|
|
|
class BadPretty(object):
|
|
|
_repr_pretty_ = None
|
|
|
|
|
|
class GoodPretty(object):
|
|
|
def _repr_pretty_(self, pp, cycle):
|
|
|
pp.text('foo')
|
|
|
|
|
|
def __repr__(self):
|
|
|
return 'GoodPretty()'
|
|
|
|
|
|
def foo_printer(obj, pp, cycle):
|
|
|
pp.text('foo')
|
|
|
|
|
|
def test_pretty():
|
|
|
f = PlainTextFormatter()
|
|
|
f.for_type(A, foo_printer)
|
|
|
nt.assert_equal(f(A()), 'foo')
|
|
|
nt.assert_equal(f(B()), 'foo')
|
|
|
nt.assert_equal(f(GoodPretty()), 'foo')
|
|
|
# Just don't raise an exception for the following:
|
|
|
f(BadPretty())
|
|
|
|
|
|
f.pprint = False
|
|
|
nt.assert_equal(f(A()), 'A()')
|
|
|
nt.assert_equal(f(B()), 'B()')
|
|
|
nt.assert_equal(f(GoodPretty()), 'GoodPretty()')
|
|
|
|
|
|
|
|
|
def test_deferred():
|
|
|
f = PlainTextFormatter()
|
|
|
|
|
|
def test_precision():
|
|
|
"""test various values for float_precision."""
|
|
|
f = PlainTextFormatter()
|
|
|
nt.assert_equal(f(pi), repr(pi))
|
|
|
f.float_precision = 0
|
|
|
if numpy:
|
|
|
po = numpy.get_printoptions()
|
|
|
nt.assert_equal(po['precision'], 0)
|
|
|
nt.assert_equal(f(pi), '3')
|
|
|
f.float_precision = 2
|
|
|
if numpy:
|
|
|
po = numpy.get_printoptions()
|
|
|
nt.assert_equal(po['precision'], 2)
|
|
|
nt.assert_equal(f(pi), '3.14')
|
|
|
f.float_precision = '%g'
|
|
|
if numpy:
|
|
|
po = numpy.get_printoptions()
|
|
|
nt.assert_equal(po['precision'], 2)
|
|
|
nt.assert_equal(f(pi), '3.14159')
|
|
|
f.float_precision = '%e'
|
|
|
nt.assert_equal(f(pi), '3.141593e+00')
|
|
|
f.float_precision = ''
|
|
|
if numpy:
|
|
|
po = numpy.get_printoptions()
|
|
|
nt.assert_equal(po['precision'], 8)
|
|
|
nt.assert_equal(f(pi), repr(pi))
|
|
|
|
|
|
def test_bad_precision():
|
|
|
"""test various invalid values for float_precision."""
|
|
|
f = PlainTextFormatter()
|
|
|
def set_fp(p):
|
|
|
f.float_precision=p
|
|
|
nt.assert_raises(ValueError, set_fp, '%')
|
|
|
nt.assert_raises(ValueError, set_fp, '%.3f%i')
|
|
|
nt.assert_raises(ValueError, set_fp, 'foo')
|
|
|
nt.assert_raises(ValueError, set_fp, -1)
|
|
|
|
|
|
def test_for_type():
|
|
|
f = PlainTextFormatter()
|
|
|
|
|
|
# initial return, None
|
|
|
nt.assert_is(f.for_type(C, foo_printer), None)
|
|
|
# no func queries
|
|
|
nt.assert_is(f.for_type(C), foo_printer)
|
|
|
# shouldn't change anything
|
|
|
nt.assert_is(f.for_type(C), foo_printer)
|
|
|
# None should do the same
|
|
|
nt.assert_is(f.for_type(C, None), foo_printer)
|
|
|
nt.assert_is(f.for_type(C, None), foo_printer)
|
|
|
|
|
|
def test_for_type_string():
|
|
|
f = PlainTextFormatter()
|
|
|
|
|
|
mod = C.__module__
|
|
|
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
|
|
|
# initial return, None
|
|
|
nt.assert_is(f.for_type(type_str, foo_printer), None)
|
|
|
# no func queries
|
|
|
nt.assert_is(f.for_type(type_str), foo_printer)
|
|
|
nt.assert_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_is(f.for_type(C), foo_printer)
|
|
|
nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_in(C, f.type_printers)
|
|
|
|
|
|
def test_for_type_by_name():
|
|
|
f = PlainTextFormatter()
|
|
|
|
|
|
mod = C.__module__
|
|
|
|
|
|
# initial return, None
|
|
|
nt.assert_is(f.for_type_by_name(mod, 'C', foo_printer), None)
|
|
|
# no func queries
|
|
|
nt.assert_is(f.for_type_by_name(mod, 'C'), foo_printer)
|
|
|
# shouldn't change anything
|
|
|
nt.assert_is(f.for_type_by_name(mod, 'C'), foo_printer)
|
|
|
# None should do the same
|
|
|
nt.assert_is(f.for_type_by_name(mod, 'C', None), foo_printer)
|
|
|
nt.assert_is(f.for_type_by_name(mod, 'C', None), foo_printer)
|
|
|
|
|
|
def test_lookup():
|
|
|
f = PlainTextFormatter()
|
|
|
|
|
|
f.for_type(C, foo_printer)
|
|
|
nt.assert_is(f.lookup(C()), foo_printer)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.lookup(A())
|
|
|
|
|
|
def test_lookup_string():
|
|
|
f = PlainTextFormatter()
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
|
|
|
f.for_type(type_str, foo_printer)
|
|
|
nt.assert_is(f.lookup(C()), foo_printer)
|
|
|
# should move from deferred to imported dict
|
|
|
nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_in(C, f.type_printers)
|
|
|
|
|
|
def test_lookup_by_type():
|
|
|
f = PlainTextFormatter()
|
|
|
f.for_type(C, foo_printer)
|
|
|
nt.assert_is(f.lookup_by_type(C), foo_printer)
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.lookup_by_type(A)
|
|
|
|
|
|
def test_lookup_by_type_string():
|
|
|
f = PlainTextFormatter()
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
f.for_type(type_str, foo_printer)
|
|
|
|
|
|
# verify insertion
|
|
|
nt.assert_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_not_in(C, f.type_printers)
|
|
|
|
|
|
nt.assert_is(f.lookup_by_type(type_str), foo_printer)
|
|
|
# lookup by string doesn't cause import
|
|
|
nt.assert_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_not_in(C, f.type_printers)
|
|
|
|
|
|
nt.assert_is(f.lookup_by_type(C), foo_printer)
|
|
|
# should move from deferred to imported dict
|
|
|
nt.assert_not_in(_mod_name_key(C), f.deferred_printers)
|
|
|
nt.assert_in(C, f.type_printers)
|
|
|
|
|
|
def test_in_formatter():
|
|
|
f = PlainTextFormatter()
|
|
|
f.for_type(C, foo_printer)
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
nt.assert_in(C, f)
|
|
|
nt.assert_in(type_str, f)
|
|
|
|
|
|
def test_string_in_formatter():
|
|
|
f = PlainTextFormatter()
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
f.for_type(type_str, foo_printer)
|
|
|
nt.assert_in(type_str, f)
|
|
|
nt.assert_in(C, f)
|
|
|
|
|
|
def test_pop():
|
|
|
f = PlainTextFormatter()
|
|
|
f.for_type(C, foo_printer)
|
|
|
nt.assert_is(f.lookup_by_type(C), foo_printer)
|
|
|
nt.assert_is(f.pop(C, None), foo_printer)
|
|
|
f.for_type(C, foo_printer)
|
|
|
nt.assert_is(f.pop(C), foo_printer)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.lookup_by_type(C)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.pop(C)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.pop(A)
|
|
|
nt.assert_is(f.pop(A, None), None)
|
|
|
|
|
|
def test_pop_string():
|
|
|
f = PlainTextFormatter()
|
|
|
type_str = '%s.%s' % (C.__module__, 'C')
|
|
|
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.pop(type_str)
|
|
|
|
|
|
f.for_type(type_str, foo_printer)
|
|
|
f.pop(type_str)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.lookup_by_type(C)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.pop(type_str)
|
|
|
|
|
|
f.for_type(C, foo_printer)
|
|
|
nt.assert_is(f.pop(type_str, None), foo_printer)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.lookup_by_type(C)
|
|
|
with nt.assert_raises(KeyError):
|
|
|
f.pop(type_str)
|
|
|
nt.assert_is(f.pop(type_str, None), None)
|
|
|
|
|
|
|
|
|
def test_warn_error_method():
|
|
|
f = HTMLFormatter()
|
|
|
class BadHTML(object):
|
|
|
def _repr_html_(self):
|
|
|
return 1/0
|
|
|
bad = BadHTML()
|
|
|
with capture_output() as captured:
|
|
|
result = f(bad)
|
|
|
nt.assert_is(result, None)
|
|
|
nt.assert_in("FormatterWarning", captured.stderr)
|
|
|
nt.assert_in("text/html", captured.stderr)
|
|
|
nt.assert_in("zero", captured.stderr)
|
|
|
|
|
|
def test_nowarn_notimplemented():
|
|
|
f = HTMLFormatter()
|
|
|
class HTMLNotImplemented(object):
|
|
|
def _repr_html_(self):
|
|
|
raise NotImplementedError
|
|
|
return 1/0
|
|
|
h = HTMLNotImplemented()
|
|
|
with capture_output() as captured:
|
|
|
result = f(h)
|
|
|
nt.assert_is(result, None)
|
|
|
nt.assert_not_in("FormatterWarning", captured.stderr)
|
|
|
|
|
|
def test_warn_error_for_type():
|
|
|
f = HTMLFormatter()
|
|
|
f.for_type(int, lambda i: name_error)
|
|
|
with capture_output() as captured:
|
|
|
result = f(5)
|
|
|
nt.assert_is(result, None)
|
|
|
nt.assert_in("FormatterWarning", captured.stderr)
|
|
|
nt.assert_in("text/html", captured.stderr)
|
|
|
nt.assert_in("name_error", captured.stderr)
|
|
|
|
|
|
def test_warn_error_pretty_method():
|
|
|
f = PlainTextFormatter()
|
|
|
class BadPretty(object):
|
|
|
def _repr_pretty_(self):
|
|
|
return "hello"
|
|
|
bad = BadPretty()
|
|
|
with capture_output() as captured:
|
|
|
result = f(bad)
|
|
|
nt.assert_is(result, None)
|
|
|
nt.assert_in("FormatterWarning", captured.stderr)
|
|
|
nt.assert_in("text/plain", captured.stderr)
|
|
|
nt.assert_in("argument", captured.stderr)
|
|
|
|
|
|
|
|
|
|
