def test_lens_formula(): u, v, f = symbols('u, v, f') assert lens_formula(focal_length=f, u=u) == f * u / (f + u) assert lens_formula(focal_length=f, v=v) == f * v / (f - v) assert lens_formula(u=u, v=v) == u * v / (u - v) assert lens_formula(u=oo, v=v) == v assert lens_formula(u=oo, v=oo) == oo
def test_lens_formula(): u, v, f = symbols('u, v, f') assert lens_formula(focal_length=f, u=u) == f*u/(f + u) assert lens_formula(focal_length=f, v=v) == f*v/(f - v) assert lens_formula(u=u, v=v) == u*v/(u - v) assert lens_formula(u=oo, v=v) == v assert lens_formula(u=oo, v=oo) == oo
def test_lens_formula(): u, v, f = symbols('u, v, f') assert lens_formula(focal_length=f, u=u) == f * u / (f + u) assert lens_formula(focal_length=f, v=v) == f * v / (f - v) assert lens_formula(u=u, v=v) == u * v / (u - v) assert lens_formula(u=oo, v=v) == v assert lens_formula(u=oo, v=oo) is oo assert lens_formula(focal_length=oo, u=u) == u assert lens_formula(u=u, v=oo) == -u assert lens_formula(focal_length=oo, v=oo) is -oo assert lens_formula(focal_length=oo, v=v) == v assert lens_formula(focal_length=f, v=oo) == -f assert lens_formula(focal_length=oo, u=oo) is oo assert lens_formula(focal_length=oo, u=u) == u assert lens_formula(focal_length=f, u=oo) == f raises(ValueError, lambda: lens_formula(focal_length=f, u=u, v=v))
def test_lens_formula(): u, v, f = symbols('u, v, f') assert lens_formula(focal_length=f, u=u) == f*u/(f + u) assert lens_formula(focal_length=f, v=v) == f*v/(f - v) assert lens_formula(u=u, v=v) == u*v/(u - v) assert lens_formula(u=oo, v=v) == v assert lens_formula(u=oo, v=oo) == oo assert lens_formula(focal_length=oo, u=u) == u assert lens_formula(u=u, v=oo) == -u assert lens_formula(focal_length=oo, v=oo) == -oo assert lens_formula(focal_length=oo, v=v) == v assert lens_formula(focal_length=f, v=oo) == -f assert lens_formula(focal_length=oo, u=oo) == oo assert lens_formula(focal_length=oo, u=u) == u assert lens_formula(focal_length=f, u=oo) == f raises(ValueError, lambda: lens_formula(focal_length=f, u=u, v=v))