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Function test_sub

numpy/polynomial/tests/test_classes.py:232–251  ·  view source on GitHub ↗
(Poly)

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230
231
232def test_sub(Poly):
233 # This checks commutation, not numerical correctness
234 c1 = list(random((4,)) + .5)
235 c2 = list(random((3,)) + .5)
236 p1 = Poly(c1)
237 p2 = Poly(c2)
238 p3 = p1 - p2
239 assert_poly_almost_equal(p2 - p1, -p3)
240 assert_poly_almost_equal(p1 - c2, p3)
241 assert_poly_almost_equal(c2 - p1, -p3)
242 assert_poly_almost_equal(p1 - tuple(c2), p3)
243 assert_poly_almost_equal(tuple(c2) - p1, -p3)
244 assert_poly_almost_equal(p1 - np.array(c2), p3)
245 assert_poly_almost_equal(np.array(c2) - p1, -p3)
246 assert_raises(TypeError, op.sub, p1, Poly([0], domain=Poly.domain + 1))
247 assert_raises(TypeError, op.sub, p1, Poly([0], window=Poly.window + 1))
248 if Poly is Polynomial:
249 assert_raises(TypeError, op.sub, p1, Chebyshev([0]))
250 else:
251 assert_raises(TypeError, op.sub, p1, Polynomial([0]))
252
253
254def test_mul(Poly):

Callers

nothing calls this directly

Calls 5

assert_raisesFunction · 0.90
ChebyshevClass · 0.90
PolynomialClass · 0.90
PolyFunction · 0.85
assert_poly_almost_equalFunction · 0.85

Tested by

no test coverage detected