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from __future__ import annotations
from manim.mobject.text.numbers import DecimalNumber
def test_font_size():
"""Test that DecimalNumber returns the correct font_size value
after being scaled.
"""
num = DecimalNumber(0).scale(0.3)
assert round(num.font_size, 5) == 14.4
def test_font_size_vs_scale():
"""Test that scale produces the same results as .scale()"""
num = DecimalNumber(0, font_size=12)
num_scale = DecimalNumber(0).scale(1 / 4)
assert num.height == num_scale.height
def test_changing_font_size():
"""Test that the font_size property properly scales DecimalNumber."""
num = DecimalNumber(0, font_size=12)
num.font_size = 48
assert num.height == DecimalNumber(0, font_size=48).height
def test_set_value_size():
"""Test that the size of DecimalNumber after set_value is correct."""
num = DecimalNumber(0).scale(0.3)
test_num = num.copy()
num.set_value(0)
# round because the height is off by 1e-17
assert round(num.height, 12) == round(test_num.height, 12)
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