def test_ascii_scale_values_up():
g = Grapher()
# Transpose 20-40 to 0-20
values = range(0, 11)
scaled_values = g._scale_y_values(values=values, new_min=0, new_max=20)
assert scaled_values[0] == 0.0
assert scaled_values[4] == 8.00
assert scaled_values[10] == 20.0
def test_ascii_scale_values_equal():
g = Grapher()
# Transpose 20-40 to 0-20
values = range(0, 21)
scaled_values = g._scale_y_values(values=values, new_min=0, new_max=20)
assert scaled_values[0] == 0.0
assert scaled_values[9] == 9.00
assert scaled_values[20] == 20.0
def test_ascii_scale_values_down():
g = Grapher()
# Transpose 20-40 to 0-20
values = range(20, 41)
scaled_values = g._scale_y_values(values=values,
new_min=0,
new_max=20,
scale_old_from_zero=False)
assert scaled_values[0] == 0.0
assert scaled_values[9] == 9.00
assert scaled_values[20] == 20.0
# Transpose 20-40 to 0-20, use 0 as the minimum range for 20-40
values = range(20, 41)
scaled_values = g._scale_y_values(values=values,
new_min=0,
new_max=20,
scale_old_from_zero=True)
assert scaled_values[0] == 10.0
assert scaled_values[9] == 14.5
assert scaled_values[20] == 20.0
