def test_record_adds_data():
trace = Trace()
assert trace.as_tuple() == ()
trace.record(t=1, v=10)
assert trace.as_tuple() == ((1, 10), )
trace.record(t=2, v=13)
assert trace.as_tuple() == (
(1, 10),
(2, 13),
)
def test_trace_creation_with_2x2_data_without_mode_is_the_same_as_samples():
data = ((1, 2), (10, 20)) # t=1, v=10; t=2, v=20
trace_default = Trace(data)
trace_samples = Trace(data, mode='samples')
assert trace_default.as_tuple() == trace_samples.as_tuple()
def test_trace_creation_with_single_item(data):
trace = Trace(data)
assert not trace.empty
assert len(trace) == 1
assert trace.as_tuple() == ((1, 10), )
def test_trace_creation_with_2x2_data_using_mode_argument(mode, expected):
trace = Trace(((1, 2), (10, 20)), mode=mode)
assert trace.as_tuple() == expected
def test_trace_creation_with_valid_data_given_in_pairs():
data = [(1, 5), (2, 8), (3, 40), (9, 34)]
trace = Trace(data)
assert not trace.empty
assert len(trace) == 4
assert trace.as_tuple() == tuple(data)
def test_as_tuple_with_illegal_mode_raises_error():
trace = Trace([[0, 0], [1, 5]])
with pytest.raises(ValueError) as excinfo:
trace.as_tuple('wrong mode')
assert 'invalid mode' in str(excinfo.value).lower()
def test_as_tuple(data, mode, expected):
trace = Trace(data)
if expected is None:
expected = data
assert trace.as_tuple(mode=mode) == expected
def test_trace_creation_with_valid_values_and_timestamps():
trace = Trace([[1, 2, 3], [10, 11, 9]])
assert not trace.empty
assert len(trace) == 3
assert trace.as_tuple() == ((1, 10), (2, 11), (3, 9))
def test_trace_is_initially_empty():
trace = Trace()
assert trace.empty
assert len(trace) == 0
assert trace.as_tuple() == ()