forked from bartvdbraak/blender
76 lines
4.0 KiB
Python
76 lines
4.0 KiB
Python
# Apache License, Version 2.0
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# ./blender.bin --background -noaudio --python tests/python/bl_pyapi_units.py -- --verbose
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import unittest
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from bpy.utils import units
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class UnitsTesting(unittest.TestCase):
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# From user typing to 'internal' Blender value.
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INPUT_TESTS = (
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# system, type, ref, input, value
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##### LENGTH
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('IMPERIAL', 'LENGTH', "", "1ft", 0.3048),
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('IMPERIAL', 'LENGTH', "", "(1+1)ft", 0.3048 * 2),
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('IMPERIAL', 'LENGTH', "", "1mi4\"", 1609.344 + 0.0254 * 4),
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('METRIC', 'LENGTH', "", "0.005µm", 0.000001 * 0.005),
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('METRIC', 'LENGTH', "", "1e6km", 1000.0 * 1e6),
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('IMPERIAL', 'LENGTH', "", "1ft5cm", 0.3048 + 0.01 * 5),
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('METRIC', 'LENGTH', "", "1ft5cm", 0.3048 + 0.01 * 5),
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# Using reference string to find a unit when none is given.
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('IMPERIAL', 'LENGTH', "33.3ft", "1", 0.3048),
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('METRIC', 'LENGTH', "33.3dm", "1", 0.1),
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('IMPERIAL', 'LENGTH', "33.3cm", "1", 0.3048), # ref unit is not in IMPERIAL system, default to feet...
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('IMPERIAL', 'LENGTH', "33.3ft", "1\"", 0.0254), # unused ref unit, since one is given already!
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('IMPERIAL', 'LENGTH', "", "1+1ft", 0.3048 * 2), # default unit taken from current string (feet).
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('METRIC', 'LENGTH', "", "1+1ft", 1.3048), # no metric units, we default to meters.
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('IMPERIAL', 'LENGTH', "", "3+1in+1ft", 0.3048 * 4 + 0.0254), # bigger unit becomes default one!
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('IMPERIAL', 'LENGTH', "", "(3+1)in+1ft", 0.3048 + 0.0254 * 4),
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)
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# From 'internal' Blender value to user-friendly printing
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OUTPUT_TESTS = (
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# system, type, prec, sep, compat, value, output
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##### LENGTH
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('IMPERIAL', 'LENGTH', 3, False, False, 0.3048, "1'"),
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('IMPERIAL', 'LENGTH', 3, False, True, 0.3048, "1ft"),
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('IMPERIAL', 'LENGTH', 3, True, False, 0.3048 * 2 + 0.0254 * 5.5, "2' 5.5\""),
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# Those next two fail, here again because precision ignores order magnitude :/
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#('IMPERIAL', 'LENGTH', 3, False, False, 1609.344 * 1e6, "1000000mi"), # == 1000000.004mi!!!
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#('IMPERIAL', 'LENGTH', 6, False, False, 1609.344 * 1e6, "1000000mi"), # == 1000000.003641mi!!!
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('METRIC', 'LENGTH', 3, True, False, 1000 * 2 + 0.001 * 15, "2km 1.5cm"),
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('METRIC', 'LENGTH', 3, True, False, 1234.56789, "1km 234.6m"),
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# Note: precision seems basically unused when using multi units!
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('METRIC', 'LENGTH', 9, True, False, 1234.56789, "1km 234.6m"),
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('METRIC', 'LENGTH', 9, False, False, 1234.56789, "1.23456789km"),
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('METRIC', 'LENGTH', 9, True, False, 1000.000123456789, "1km 0.1mm"),
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)
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def test_units_inputs(self):
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# Stolen from FBX addon!
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def similar_values(v1, v2, e):
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if v1 == v2:
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return True
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return ((abs(v1 - v2) / max(abs(v1), abs(v2))) <= e)
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for usys, utype, ref, inpt, val in self.INPUT_TESTS:
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opt_val = units.to_value(usys, utype, inpt, ref)
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# Note: almostequal is not good here, precision is fixed on decimal digits, not variable with
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# magnitude of numbers (i.e. 1609.4416 ~= 1609.4456 fails even at 5 of 'places'...).
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self.assertTrue(similar_values(opt_val, val, 1e-7),
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msg="%s, %s: \"%s\" (ref: \"%s\") => %f, expected %f"
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"" % (usys, utype, inpt, ref, opt_val, val))
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def test_units_outputs(self):
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for usys, utype, prec, sep, compat, val, output in self.OUTPUT_TESTS:
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opt_str = units.to_string(usys, utype, val, prec, sep, compat)
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self.assertEqual(opt_str, output,
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msg="%s, %s: %f (precision: %d, separate units: %d, compat units: %d) => "
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"\"%s\", expected \"%s\"" % (usys, utype, val, prec, sep, compat, opt_str, output))
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if __name__ == '__main__':
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import sys
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sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else [])
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unittest.main()
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