def strike(ctx, grain, vol, temp):
"""
Calculate the required strike water temperature given the mass of grains,
volume of water, and desired final mash temperature
"""
if not grain:
grain = inputs.get_unit_input(ctx.obj["units"]["lrg_weight"],
"Weight of grains: ")
if not vol:
vol = inputs.get_unit_input(ctx.obj["units"]["vol"],
"Volume of water: ")
if not temp:
temp = inputs.get_unit_input(ctx.obj["units"]["temp"],
"Desired mash temp: ")
if is_metric(ctx):
grain = bm.kg_to_lbs(grain)
vol = bm.l_to_g(vol)
temp = bm.c_to_f(temp)
strike_temp = bm.strike_temp(grain, vol, temp)
if is_metric(ctx):
strike_temp = bm.f_to_c(strike_temp)
print("Strike water temp should be {0:.3f}{1}".format(
strike_temp, ctx.obj["units"]["temp"]))
def test_c_to_f_to_c():
f = bm.c_to_f(115)
c = bm.f_to_c(f)
assert c == 115
def test_f_to_c_to_f():
c = bm.f_to_c(244.4)
f = bm.c_to_f(c)
assert f == 244.4
def test_f_to_c():
c = bm.f_to_c(82.4)
assert c == pytest.approx(28, 0.1)