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"""
Unit test for the repr and pprint of parameterized objects, and for pprint/script_repr.
"""
import inspect
import unittest
import param
import pytest
class TestParameterizedRepr(unittest.TestCase):
def setUp(self):
super().setUp()
# initialize a parameterized class
class A(param.Parameterized):
a = param.Number(4, precedence=-5)
b = param.String('B', precedence=-4)
c = param.Number(4, precedence=0)
d = param.Integer(-22, precedence=1)
x = param.Number(1, precedence=2)
y = param.Number(2, precedence=-1)
z = param.Number(3, precedence=-2)
def __init__(self, a, b, c=4, d=-22, **kwargs):
super().__init__(a=a, b=b, c=c, **kwargs)
self.A = A
class B(param.Parameterized): # Similar to A but no **kwargs
a = param.Number(4, precedence=-5)
b = param.String('B', precedence=-4)
c = param.Number(4, precedence=0)
d = param.Integer(-22, precedence=1)
x = param.Number(1, precedence=2)
def __init__(self, a, b, c=4, d=-22):
super().__init__(a=a, b=b, c=c, name='ClassB')
self.B = B
class C(param.Parameterized): # Similar to A but with *varargs
a = param.Number(4, precedence=-5)
b = param.String('B', precedence=-4)
c = param.Number(4, precedence=0)
d = param.Integer(-22, precedence=1)
x = param.Number(1, precedence=2)
y = param.Number(2, precedence=-1)
z = param.Number(3, precedence=-2)
def __init__(self, a, b, c=4, d=-22, *varargs, **kwargs):
super().__init__(a=a, b=b, c=c, **kwargs)
self.C = C
class D(param.Parameterized): # Similar to A but with missing parameters
a = param.Number(4, precedence=-5)
b = param.String('B', precedence=-4)
def __init__(self, a, b, c=4, d=-22, **kwargs):
super().__init__(a=a, b=b, **kwargs)
self.D = D
# More realistically, positional args are not params
class E(param.Parameterized):
a = param.Number(4, precedence=-5)
def __init__(self, p, q=4, **params): # (plus non-param kw too)
super().__init__(**params)
self.E = E
def testparameterizedrepr(self):
obj = self.A(4,'B', name='test1')
self.assertEqual(repr(obj),
"A(a=4, b='B', c=4, d=-22, name='test1', x=1, y=2, z=3)")
def testparameterizedscriptrepr1(self):
obj = self.A(4,'B', name='test')
self.assertEqual(obj.param.pprint(),
"A(4, 'B', name='test')")
def testparameterizedscriptrepr2(self):
obj = self.A(4,'B', c=5, name='test')
self.assertEqual(obj.param.pprint(),
"A(4, 'B', c=5, name='test')")
def testparameterizedscriptrepr3(self):
obj = self.A(4,'B', c=5, x=True, name='test')
self.assertEqual(obj.param.pprint(),
"A(4, 'B', c=5, name='test')")
def testparameterizedscriptrepr4(self):
obj = self.A(4,'B', c=5, x=10, name='test')
self.assertEqual(obj.param.pprint(),
"A(4, 'B', c=5, name='test', x=10)")
def testparameterizedscriptrepr5(self):
obj = self.A(4,'B', x=10, y=11, z=12, name='test')
self.assertEqual(obj.param.pprint(),
"A(4, 'B', name='test', z=12, y=11, x=10)")
def testparameterizedscriptrepr_nokwargs(self):
obj = self.B(4,'B', c=99)
obj.x = 10 # Modified but not passable through constructor
self.assertEqual(obj.param.pprint(),
"B(4, 'B', c=99)")
def testparameterizedscriptrepr_varags(self):
obj = self.C(4,'C', c=99)
self.assertEqual(obj.param.pprint(),
"C(4, 'C', c=99, **varargs)")
def testparameterizedscriptrepr_varags_kwargs(self):
obj = self.C(4,'C', c=99, x=10, y=11, z=12)
self.assertEqual(obj.param.pprint(),
"C(4, 'C', c=99, z=12, y=11, x=10, **varargs)")
def testparameterizedscriptrepr_missing_values(self):
obj = self.D(4,'D', c=99)
self.assertEqual(obj.param.pprint(),
"D(4, 'D', c=<?>, d=<?>)")
def testparameterizedscriptrepr_nonparams(self):
obj = self.E(10,q='hi', a=99)
self.assertEqual(obj.param.pprint(),
"E(<?>, q=<?>, a=99)")
def testparameterizedscriptrepr_recursive(self):
class Q(param.Parameterized):
a = param.Number(default=39, bounds=(0,50), doc='Number a')
b = param.String(default="str", doc='A string')
class P(Q):
c = param.ClassSelector(default=Q(), class_=Q, doc='An instance of Q')
e = param.ClassSelector(default=param.Parameterized(), class_=param.Parameterized, doc='A Parameterized instance')
f = param.Range(default=(0,1), doc='A range')
p = P(f=(2,3), name="demo")
p.c = P(c=p)
assert p.param.pprint() == "P(c=P(c=..., e=Parameterized()), e=Parameterized(), f=(2,3), name='demo')"
def test_exceptions(self):
obj = self.E(10,q='hi',a=99)
try:
obj.param.pprint(unknown_value=False)
except Exception:
pass
else:
raise AssertionError
def test_suppression(self):
obj = self.E(10,q='hi',a=99)
self.assertEqual(obj.param.pprint(unknown_value=None),
"E(a=99)")
def test_imports_deduplication(self):
obj = self.E(10,q='hi', a=99)
imports = ['import me','import me']
obj.param.pprint(imports=imports)
self.assertEqual(imports.count('import me'),1)
def test_qualify(self):
obj = self.E(10,q='hi', a=99)
r = "E(<?>, q=<?>, a=99)"
self.assertEqual(obj.param.pprint(qualify=False),
r)
self.assertEqual(obj.param.pprint(qualify=True),
"tests.testparameterizedrepr."+r)
@pytest.fixture
def P():
class P(param.Parameterized):
x = param.Parameter()
y = param.Parameter()
def __init__(self, x, **params):
params['x'] = x
super().__init__(**params)
return P
def test_pprint_type(P):
assert param.parameterized.pprint(P) == f'{__name__}.P'
def test_pprint_parameterized_instance(P):
p = P(1, y=2)
assert param.parameterized.pprint(p) == 'P(1,\n y=2)'
def test_pprint_parameterized_other():
assert param.parameterized.pprint('2') == repr('2')
def test_script_repr_type(P):
assert param.script_repr(P) == f'import {__name__}\n\n{__name__}.P'
def test_script_repr_parameterized_instance(P):
p = P(1, y=2)
sr = param.script_repr(p)
assert f'import {__name__.split(".")[0]}' in sr
assert f'import {__name__}' in sr
assert f'{__name__}.P(1,\n\n y=2)' in sr
def test_script_repr_parameterized_other():
assert param.script_repr('2') == "\n\n'2'"
def test_pprint_signature_overriden():
# https://github.com/holoviz/param/issues/785
class P(param.Parameterized):
def __init__(self, **params): pass
class T(P): pass
t = T()
# This is actually setting the signature of P.__init__
# as T doesn't define __init__
# bad
T.__init__.__signature__ = inspect.Signature(
[
inspect.Parameter('test', inspect.Parameter.KEYWORD_ONLY),
]
)
with pytest.raises(KeyError, match=r"'T\.__init__\.__signature__' must contain 'self' as its first Parameter"):
t.param.pprint()
# good
T.__init__.__signature__ = inspect.Signature(
[
inspect.Parameter('self', inspect.Parameter.POSITIONAL_OR_KEYWORD),
inspect.Parameter('test', inspect.Parameter.KEYWORD_ONLY),
]
)
assert t.param.pprint() == 'T()'
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