def test_eq_empty():
empty = Condition()
assert empty == empty
also_empty = Condition()
assert empty is not also_empty
assert empty == also_empty
def empty_conditions():
return [
Condition(),
AndCondition(),
OrCondition(),
NotCondition(Condition())
]
def conditions_for(classes, include=None, exclude=None):
"""Returns lambdas that take column"""
value = "value"
values = ["0", "1", "2"]
condition_lambdas = []
if BeginsWithCondition in classes:
condition_lambdas.append(
lambda column: BeginsWithCondition(column, value))
if BetweenCondition in classes:
condition_lambdas.append(
lambda column: BetweenCondition(column, values[0], values[1]))
if ComparisonCondition in classes:
condition_lambdas.extend(
comparisons_for(include=include, exclude=exclude))
if Condition in classes:
condition_lambdas.append(lambda column: Condition())
if ContainsCondition in classes:
condition_lambdas.append(
lambda column: ContainsCondition(column, value))
if InCondition in classes:
condition_lambdas.append(lambda column: InCondition(column, values))
# Meta Conditions
if AndCondition in classes:
condition_lambdas.append(
lambda column: AndCondition(column == value, column != value))
if OrCondition in classes:
condition_lambdas.append(
lambda column: OrCondition(column == value, column != value))
if NotCondition in classes:
condition_lambdas.append(lambda column: NotCondition(column == value))
return condition_lambdas
def conditions_for(*operations, column=None):
column = column or MockColumn("c")
value = 0
values = [1, 2]
conditions = []
if None in operations:
conditions.append(Condition())
if "and" in operations:
left = ComparisonCondition("==", column, value)
right = ComparisonCondition("!=", column, value)
conditions.append(AndCondition(left, right))
if "or" in operations:
left = ComparisonCondition("==", column, value)
right = ComparisonCondition("!=", column, value)
conditions.append(OrCondition(left, right))
if "not" in operations:
inner = ComparisonCondition("==", column, value)
conditions.append(NotCondition(inner))
if "begins_with" in operations:
conditions.append(BeginsWithCondition(column, value))
if "between" in operations:
conditions.append(BetweenCondition(column, *values))
if "contains" in operations:
conditions.append(ContainsCondition(column, value))
if "in" in operations:
conditions.append(InCondition(column, values))
for operation in ("<", "<=", ">", ">=", "!=", "=="):
if operation in operations:
conditions.append(ComparisonCondition(operation, column, value))
return conditions
def test_or_empty_conditions(empty):
"""When conditions are falsey (literal empty or meta with no inner value), simplify instead of nesting:
()_1 | ()_2 -> ()_1
x | () -> x
() | x -> x
"""
also_empty = Condition()
not_empty = condition_for(">")
assert (empty | not_empty) is not_empty
assert (not_empty | empty) is not_empty
assert (empty | also_empty) is empty
assert (also_empty | empty) is also_empty
def test_ior_empty_conditions(empty):
"""Similar to or, empty values don't change the non-empty values. LHS always wins if both empty."""
also_empty = Condition()
not_empty = condition_for(">")
# None of the following modify the object
original_empty = empty
empty |= also_empty
assert empty is original_empty
original_also_empty = also_empty
also_empty |= empty
assert also_empty is original_also_empty
original_not_empty = not_empty
not_empty |= empty
assert not_empty is original_not_empty
# The only modifying __ior__
empty |= not_empty
assert empty is not_empty
def test_invert_empty():
"""~() -> ()"""
empty = Condition()
assert (~empty) is empty
def test_render_empty(renderer):
condition = Condition()
condition.render(renderer)
assert not renderer.output
def test_iter_empty():
condition = Condition()
assert set(iter_conditions(condition)) == {condition}
assert next(iter_columns(condition), None) is None
def test_empty_condition():
assert Condition().operation is None
def test_eq_wrong_type():
"""AttributeError returns False"""
assert not (Condition() == object())
# begins_with, contains
(BeginsWithCondition(column=c, value=2), "begins_with(M.c, 2)"),
(ContainsCondition(column=c, value=2), "contains(M.c, 2)"),
# between
(BetweenCondition(column=c, lower=2, upper=3), "(M.c between [2, 3])"),
# in
(InCondition(column=c, values=[]), "(M.c in [])"),
(InCondition(column=c, values=[2, 3]), "(M.c in [2, 3])"),
(InCondition(column=c, values=[MockColumn("d"), 3
]), "(M.c in [<MockColumn[M.d]>, 3])"),
# empty
(Condition(), "()")
])
def test_repr(condition, expected):
assert repr(condition) == expected
# CONDITIONS EQUALITY ============================================================================ CONDITIONS EQUALITY
def test_eq_empty():
empty = Condition()
assert empty == empty
also_empty = Condition()
assert empty is not also_empty
assert empty == also_empty