def test_check_scoping():
st = SymbolTable()
for val in xrange(0, 10):
st.enter_scope()
st.add('a', val)
for val in xrange(9, -1, -1):
assert st.find('a') == val
st.leave_scope()
def test_simple():
st = SymbolTable()
val = 1
st.add('a', val)
eq_(st.find('a'), val)
st.enter_scope()
eq_(st.find('a'), val)
st.leave_scope()
eq_(st.find('a'), val)
