def test_add_table():
symt1 = SymbolTable()
symt1.add_symbol("a")
symt1.add_symbol("b")
symt2 = SymbolTable()
symt2.add_symbol("c")
symt2.add_symbol("b")
symt1.add_table(symt2)
assert symt1.num_symbols() == 4
assert symt1.find(EPS_SYMBOL) == 0
assert symt1.find("a") == 1
assert symt1.find("b") == 2
assert symt1.find("c") == 3
def test_symt_add_twice_symbol():
symt = SymbolTable()
symt.add_symbol("a")
symt.add_symbol("a")
assert symt.num_symbols() == 2
assert symt.find("a") == 1
def test_symt():
symt = SymbolTable()
symt.add_symbol("a")
symt.add_symbol("b")
assert symt.num_symbols() == 3
assert symt.find(EPS_SYMBOL) == 0
assert symt.find("a") == 1
assert symt.find("b") == 2
assert symt.member(EPS_SYMBOL) is True
assert symt.member("a") is True
assert symt.member("b") is True
assert symt.member("c") is False
assert symt.find(0) == EPS_SYMBOL
assert symt.find(1) == "a"
assert symt.find(2) == "b"
assert symt.member(0) is True
assert symt.member(1) is True
assert symt.member(2) is True
assert symt.member(3) is False