def test_compute_va_effects_valid():
    scale_factor, va_ra, va_dec = compute_va_effects(*GOOD_VELOCITY, *GOOD_POS)
    assert isclose(scale_factor, GOOD_SCALE_FACTOR)
    assert isclose(va_ra, GOOD_APPARENT_RA)
    assert isclose(va_dec, GOOD_APPARENT_DEC)
def test_compute_va_effects_zero_velocity():
    scale_factor, va_ra, va_dec = compute_va_effects(0.0, 0.0, 0.0, *GOOD_POS)
    assert isclose(scale_factor, 1.0, atol=1e-16)
    assert isclose(va_ra, GOOD_POS[0], atol=1e-16)
    assert isclose(va_dec, GOOD_POS[1], atol=1e-16)
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def test_compute_va_effects_zero_velocity():
    scale_factor, va_ra, va_dec = compute_va_effects(0.0, 0.0, 0.0, *GOOD_POS)
    assert scale_factor == 1.0
    assert va_ra == GOOD_POS[0]
    assert va_dec == GOOD_POS[1]