def test_limits_reducer_source():
low, high = 42, 1729
action = colors.set_source_limits(low, high)
state = colors.limits_reducer({}, action)
origin = "column_data_source"
assert state["colorbar"]["limits"][origin]["low"] == low
assert state["colorbar"]["limits"][origin]["high"] == high
def test_limits_reducer_user_low():
number = 42
action = colors.set_user_low(number)
state = colors.limits_reducer({}, action)
origin = "user"
assert state["colorbar"]["limits"][origin]["low"] == number
def test_limits_reducer_origin():
text = "foo"
action = colors.set_limits_origin(text)
state = colors.limits_reducer({}, action)
assert state["colorbar"]["limits"]["origin"] == text
