def test_div_round_to_zero(self):
target = BoundedValue(min=9, max=17)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, 2)
self.assertEqual(target.max, 8)
target = BoundedValue(min=9, max=17)
source = BoundedValue(min=-2, max=-4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, -8)
self.assertEqual(target.max, -2)
target = BoundedValue(min=-9, max=-17)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, -8)
self.assertEqual(target.max, -2)
target = BoundedValue(min=-17, max=9)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, -8)
self.assertEqual(target.max, 4)
target = BoundedValue(min=-17, max=9)
source = BoundedValue(min=-2, max=4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, -4)
self.assertEqual(target.max, 8)
def test_mul(self):
target = BoundedValue(min=8, max=16)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.MUL)
self.assertEqual(target.min, 16)
self.assertEqual(target.max, 64)
target = BoundedValue(min=9, max=17)
source = BoundedValue(min=-2, max=-4)
apply_bounded_instruction(target, source, InstructionType.MUL)
self.assertEqual(target.min, -68)
self.assertEqual(target.max, -18)
target = BoundedValue(min=-9, max=-17)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.MUL)
self.assertEqual(target.min, -68)
self.assertEqual(target.max, -18)
target = BoundedValue(min=-17, max=9)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.MUL)
self.assertEqual(target.min, -68)
self.assertEqual(target.max, 36)
target = BoundedValue(min=-17, max=9)
source = BoundedValue(min=-2, max=4)
apply_bounded_instruction(target, source, InstructionType.MUL)
self.assertEqual(target.min, -68)
self.assertEqual(target.max, 36)
def test_add(self):
target = BoundedValue(min=1, max=3)
source = BoundedValue(min=2, max=5)
apply_bounded_instruction(target, source, InstructionType.ADD)
self.assertEqual(target.min, 3)
self.assertEqual(target.max, 8)
self.assertEqual(source.min, 2)
self.assertEqual(source.max, 5)
def test_mod_lhs_short(self):
target = BoundedValue(min=0, max=8)
source = BoundedValue(min=1, max=16)
apply_bounded_instruction(target, source, InstructionType.MOD)
self.assertEqual(target.min, 0)
self.assertEqual(target.max, 8)
def test_mod_exact_both(self):
target = BoundedValue(min=9, max=9)
source = BoundedValue(min=8, max=8)
apply_bounded_instruction(target, source, InstructionType.MOD)
self.assertEqual(target.min, 1)
self.assertEqual(target.max, 1)
def test_mod_exact_target(self):
target = BoundedValue(min=7, max=7)
source = BoundedValue(min=1, max=8)
apply_bounded_instruction(target, source, InstructionType.MOD)
self.assertEqual(target.min, 0)
self.assertEqual(target.max, 7)
def test_mod_reduced_range(self):
target = BoundedValue(min=3, max=5)
source = BoundedValue(min=8, max=16)
apply_bounded_instruction(target, source, InstructionType.MOD)
self.assertEqual(target.min, 3)
self.assertEqual(target.max, 5)
def test_mod_overlap(self):
target = BoundedValue(min=0, max=100)
source = BoundedValue(min=1, max=16)
apply_bounded_instruction(target, source, InstructionType.MOD)
self.assertEqual(target.min, 0)
self.assertEqual(target.max, 15)
def test_eql_exact(self):
target = BoundedValue(min=16, max=16)
source = BoundedValue(min=16, max=16)
apply_bounded_instruction(target, source, InstructionType.EQUALS)
self.assertEqual(target.min, 1)
self.assertEqual(target.max, 1)
def test_eql_overlap(self):
target = BoundedValue(min=8, max=16)
source = BoundedValue(min=2, max=8)
apply_bounded_instruction(target, source, InstructionType.EQUALS)
self.assertEqual(target.min, 0)
self.assertEqual(target.max, 1)
def test_div(self):
target = BoundedValue(min=8, max=16)
source = BoundedValue(min=2, max=4)
apply_bounded_instruction(target, source, InstructionType.DIV)
self.assertEqual(target.min, 2)
self.assertEqual(target.max, 8)