def test_basic_format():
assert 'foo' == rformat.format('foo')
lastnames = {'john': 'smith', 'jane': 'doe'}
assert 'hello john smith' == rformat.format(
'hello {name} {lastnames[{name}]}', name='john', lastnames=lastnames)
assert 'hello jane doe' == rformat.format(
'hello {name} {lastnames[{name}]}', name='jane', lastnames=lastnames)
def test_exceptions():
with pytest.raises(KeyError):
rformat.format('hello {name} {lastnames[{name}]}', name='frank', lastnames={})
with pytest.raises(IndexError):
rformat.format('hello {names[{index}]}', index=0, names=[])
with pytest.raises(TypeError):
rformat.format('hello {names[{index}]}', index="hello", names=[])
def test_cycles():
with pytest.raises(rformat.DepthExceeded):
rformat.format('{names[{index}]}', index='john', names={'john': '{names[{index}]}'})
