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import math
from fpdf.util import convert_unit
def test_convert_unit_number_number():
"""Test converting units where both old and new are numbers"""
converted = convert_unit(1, 72, 72 / 25.4) # inch to mm
assert math.isclose(converted, 25.4), "1 inch should equal 25.4 mm at 72dpi"
def test_convert_unit_number_string():
"""Test converting units where old is a number and new is a string"""
converted = convert_unit(1, 72, "mm") # inch to mm
assert math.isclose(converted, 25.4), "1 inch should equal 25.4 mm at 72dpi"
def test_convert_unit_string_number():
"""Test converting units where old is a string and new is a number"""
converted = convert_unit(1, "in", 72 / 25.4) # inch to mm
assert math.isclose(converted, 25.4), "1 inch should equal 25.4 mm at 72dpi"
def test_convert_unit_string_string():
"""Test converting units where both old and new are strings"""
converted = convert_unit(1, "in", "mm")
assert math.isclose(converted, 25.4), "1 inch should equal 25.4 mm at 72dpi"
def test_convert_unit_tuple():
"""
Test converting a simple tuple
Eg. The output of `get_page_format("letter", 1)`
"""
inches = convert_unit((612, 792), "pt", "in")
assert inches == (8.5, 11.0)
def test_convert_unit_list():
"""Test converting a simple list"""
inches = convert_unit([612, 792], "pt", "in")
assert inches == (8.5, 11.0)
def test_convert_unit_iterator():
"""Test converting a simple iterator"""
inches = convert_unit(iter([612, 792]), "pt", "in")
assert inches == (8.5, 11.0)
def test_convert_unit_list_of_points():
"""Test converting a list of points"""
inches = convert_unit([(72, 72), (612, 792)], "pt", "in")
assert inches == ((1, 1), (8.5, 11.0))
def test_convert_unit_crazy():
"""
Test converting a tuple which holds a list/iterator/tuple which contains points.
This would be creating points for multiple pdfs at once, where each page of each pdf has its own unique point grid.
"""
to_convert = (
[iter([8.5, 11]), [1, 1]],
((1, 1), (8.5, 11)),
iter([(2, 2), (11, 8.5)]),
)
converted = convert_unit(to_convert, "in", "mm")
assert converted == (
((215.89999999999998, 279.4), (25.399999999999995, 25.399999999999995)),
((25.399999999999995, 25.399999999999995), (215.89999999999998, 279.4)),
((50.79999999999999, 50.79999999999999), (279.4, 215.89999999999998)),
)
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