def test_leaves():
t = TableSymbol('t', '{id: int32, name: string}')
v = TableSymbol('v', '{id: int32, city: string}')
x = symbol('x', 'int32')
assert t._leaves() == [t]
assert t.id._leaves() == [t]
assert by(t.name, count=t.id.nunique())._leaves() == [t]
assert join(t, v)._leaves() == [t, v]
assert join(v, t)._leaves() == [v, t]
assert (x + 1)._leaves() == [x]
def test_leaves():
t = TableSymbol('t', '{id: int32, name: string}')
v = TableSymbol('v', '{id: int32, city: string}')
x = Symbol('x', 'int32')
assert t._leaves() == [t]
assert t.id._leaves() == [t]
assert by(t.name, t.id.nunique())._leaves() == [t]
assert join(t, v)._leaves() == [t, v]
assert join(v, t)._leaves() == [v, t]
assert (x + 1)._leaves() == [x]
def test_leaves():
t = TableSymbol("t", "{id: int32, name: string}")
v = TableSymbol("v", "{id: int32, city: string}")
x = symbol("x", "int32")
assert t._leaves() == [t]
assert t.id._leaves() == [t]
assert by(t.name, count=t.id.nunique())._leaves() == [t]
assert join(t, v)._leaves() == [t, v]
assert join(v, t)._leaves() == [v, t]
assert (x + 1)._leaves() == [x]
