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Add round-trip consistency test for speed conversion functions #149

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Add round-trip consistency test for speed conversion functions #149

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9 changes: 9 additions & 0 deletions tests/test_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -186,3 +186,12 @@ def test_find_coord_index_out_of_range(start_coord, end_coord, not_in_array):

error_message = 'Coordinate not in array: '
assert error_message in str(excinfo.value)

def test_speed_conversion_roundtrip():
speeds_knots = [0, 5, 10, 25, 100]

for speed in speeds_knots:
mps = unit.knots_to_mps(speed)
knots_back = unit.mps_to_knots(mps)

assert np.isclose(knots_back, speed, atol=1e-5)