def test_thirteen():
assert bracket_validation('') == True
def test_two():
assert bracket_validation('{}') == True
def test_eleven():
assert bracket_validation('[this(sdf{sdf(sdfsdf)})]') == True
def test_twelve():
assert bracket_validation('{sdfsdf ()sdfsdf') == False
def test_one():
assert bracket_validation('th{his(hlie}v[') == False
def test_ten():
assert bracket_validation('This(should} not ) pass') == False
def test_eight():
assert bracket_validation(']') == False
def test_nine():
assert bracket_validation('([dog]{cat})') == True
def test_seve():
assert bracket_validation('[') == False
def test_six():
assert bracket_validation('[]') == True
def test_five():
assert bracket_validation(')') == False
def test_four():
assert bracket_validation('(') == False
def test_three():
assert bracket_validation('()') == True