def test_nest_by_oper_with_arrays(self):
"""Test and expression with arrays (combined expressions)."""
nested_expr = ConditionalSimplifier.nest_by_oper(
[['a', '&', 'b'], '&', ['b', '&', 'c']], '&')
self.assertIsInstance(nested_expr, list)
self.assertEqual([['a', '&', 'b'], '&', ['b', '&', 'c']],
nested_expr)
def set_condition(self, expr):
"""Set the conditional expression for this prerequisite.
Resets the cached state (self._all_satisfied).
"""
drop_these = []
self._all_satisfied = None
if self.pre_initial_messages:
for message in self.pre_initial_messages:
drop_these.append(message)
# Needed to drop pre warm-start dependence:
for message in self.satisfied:
if message in drop_these:
continue
if self.start_point:
if message[1]: # Cycle point.
if get_point(message[1]) < self.start_point <= self.point:
# Drop if outside of relevant point range.
drop_these.append(message)
for message in drop_these:
if message in self.satisfied:
self.satisfied.pop(message)
if '|' in expr:
if drop_these:
simpler = ConditionalSimplifier(
expr, [self.MESSAGE_TEMPLATE % m for m in drop_these])
expr = simpler.get_cleaned()
# Make a Python expression so we can eval() the logic.
for message in self.satisfied:
expr = expr.replace(self.MESSAGE_TEMPLATE % message,
self.SATISFIED_TEMPLATE % message)
self.conditional_expression = expr
def test_flatten_nested_expr_with_brackets(self):
"""Test expressions with brackets"""
bracketed = ConditionalSimplifier.get_bracketed(
['(', 'a', '&', 'b', ')'])
self.assertEqual(['(', ['a', '&', 'b'], ')'], bracketed)
def test_clean_expr(self):
"""Test clean expressions"""
for expr, criterion, expected in self.get_clean_expr:
self.assertEqual(expected,
ConditionalSimplifier.clean_expr(expr, criterion))
def test_flatten_nested_expr_with_arrays(self):
"""Test flattened expressions with nested arrays"""
flattened = ConditionalSimplifier.flatten_nested_expr([['a', '&', 'b'],
'&', 'c'])
self.assertEqual('((a & b) & c)', flattened)
def test_flatten_nested_expr(self):
"""Test flattened expressions"""
flattened = ConditionalSimplifier.flatten_nested_expr(['a', '&', 'b'])
self.assertEqual('(a & b)', flattened)
def test_nest_by_oper_not_matching_operator(self):
"""Test when the operation is simply not found. Same input returned."""
input_expr = ['a', 'xor', 'b', 'not', 'c']
nested_expr = ConditionalSimplifier.nest_by_oper(input_expr, 'mod')
self.assertIsInstance(nested_expr, list)
self.assertEqual(input_expr, nested_expr)
def test_nest_by_oper_simple(self):
"""Test the case where we have a simple expression."""
nested_expr = ConditionalSimplifier.nest_by_oper(
['a', '||', 'b', '||', 'c'], '||')
self.assertIsInstance(nested_expr, list)
self.assertEqual([['a', '||', 'b'], '||', 'c'], nested_expr)
def test_flatten_nested_expr_with_brackets(self):
"""Test expressions with brackets"""
bracketed = ConditionalSimplifier.get_bracketed(
['(', 'a', '&', 'b', ')'])
self.assertEqual(['(', ['a', '&', 'b'], ')'], bracketed)
def test_clean_expr(self):
"""Test clean expressions"""
for expr, criterion, expected in self.get_clean_expr:
self.assertEqual(expected,
ConditionalSimplifier.clean_expr(expr, criterion))
def test_flatten_nested_expr_with_arrays(self):
"""Test flattened expressions with nested arrays"""
flattened = ConditionalSimplifier.flatten_nested_expr(
[['a', '&', 'b'], '&', 'c'])
self.assertEqual('((a & b) & c)', flattened)
def test_flatten_nested_expr(self):
"""Test flattened expressions"""
flattened = ConditionalSimplifier.flatten_nested_expr(['a', '&', 'b'])
self.assertEqual('(a & b)', flattened)
def test_nest_by_oper_not_matching_operator(self):
"""Test when the operation is simply not found. Same input returned."""
input_expr = ['a', 'xor', 'b', 'not', 'c']
nested_expr = ConditionalSimplifier.nest_by_oper(input_expr, 'mod')
self.assertIsInstance(nested_expr, list)
self.assertEqual(input_expr, nested_expr)
def test_nest_by_oper_simple(self):
"""Test the case where we have a simple expression."""
nested_expr = ConditionalSimplifier.nest_by_oper(['a', '||', 'b',
'||', 'c'], '||')
self.assertIsInstance(nested_expr, list)
self.assertEqual([['a', '||', 'b'], '||', 'c'], nested_expr)