127 lines
5.1 KiB
Python
127 lines
5.1 KiB
Python
# (c) Juergen Riegel (juergen.riegel@web.de) 20010 LGPL
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import FreeCAD
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import unittest
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import math
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def tu(str):
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return FreeCAD.Units.Quantity(str).Value
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def ts(q):
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return q.UserString
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def ts2(q):
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return FreeCAD.Units.Quantity(q.UserString).UserString
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#---------------------------------------------------------------------------
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# define the functions to test the FreeCAD UnitApi code
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#---------------------------------------------------------------------------
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def compare(x, y):
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return math.fabs(x - y) < 0.00001
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class UnitBasicCases(unittest.TestCase):
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def setUp(self):
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par = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Units")
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dec = par.GetInt("Decimals")
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self.delta = math.pow(10,-dec)
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def testConversions(self):
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#tu = FreeCAD.Units.translateUnit
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self.failUnless(compare(tu('10 m'), 10000.0))
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self.failUnless(compare(tu('3/8 in'), 9.525))
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self.failUnless(compare(tu('100 km/h'), 27777.77777777))
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self.failUnless(compare(tu('m^2*kg*s^-3*A^-2'), 1000000.0))
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self.failUnless(compare(tu('(m^2*kg)/(A^2*s^3)'), 1000000.0))
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self.failUnless(compare(tu('2*pi rad'), 360.0))
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self.failUnless(compare(tu('2*pi rad') / tu('gon'), 400.0))
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self.failUnless(compare(tu('999 kg') / tu('1 m^3'), 0.000009999))
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def testImperial(self):
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#tu = FreeCAD.Units.translateUnit
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self.failUnless(compare(tu('3/8in'), 9.525))
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#self.failUnless(compare(tu('1fo(3+7/16)in'),392.112500))thisgivesaparsersyntaxerror!!!
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self.failUnless(compare(tu('1\'(3+7/16)"'), 392.112500))
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psi = FreeCAD.Units.parseQuantity("1psi")
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mpa = psi.getValueAs("MPa").Value
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self.assertAlmostEqual(0.006894744825, mpa, delta=self.delta)
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kpa = psi.getValueAs("kPa").Value
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self.assertAlmostEqual(6.894744825494, kpa, delta=self.delta)
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ksi = FreeCAD.Units.parseQuantity("1ksi")
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mpa = ksi.getValueAs("MPa").Value
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self.assertAlmostEqual(6.894744825494, mpa, delta=self.delta)
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kpa = ksi.getValueAs("kPa").Value
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self.assertAlmostEqual(6894.744825494, kpa, delta=self.delta)
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def testSelfConsistency(self):
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qu = FreeCAD.Units.Quantity("0.23 W/m/K")
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self.assertTrue(ts(qu), ts2(qu))
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qu = FreeCAD.Units.Quantity("237 mm*kg/(s^3*K)")
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self.assertTrue(ts(qu), ts2(qu))
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qu = FreeCAD.Units.Quantity("237.000 W/mm/K")
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self.assertTrue(ts(qu), ts2(qu))
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def testDivide(self):
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qu1 = FreeCAD.Units.Quantity("1 m/s")
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qu2 = FreeCAD.Units.Quantity("m/s")
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self.assertTrue(qu1/qu2, 1)
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def testSchemes(self):
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schemes = FreeCAD.Units.listSchemas()
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num = len(schemes)
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psi = FreeCAD.Units.parseQuantity("1psi")
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for i in range(num):
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t = FreeCAD.Units.schemaTranslate(psi, i)
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v = FreeCAD.Units.parseQuantity(t[0]).getValueAs("psi")
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self.assertAlmostEqual(1, v.Value, msg="Failed with \"{0}\" scheme: {1} != 1 (delta: {2})".format(schemes[i], v.Value, self.delta), delta=self.delta)
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ksi = FreeCAD.Units.parseQuantity("1ksi")
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for i in range(num):
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t = FreeCAD.Units.schemaTranslate(ksi, i)
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v = FreeCAD.Units.parseQuantity(t[0]).getValueAs("ksi")
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self.assertAlmostEqual(1, v.Value, msg="Failed with \"{0}\" scheme: {1} != 1 (delta: {2})".format(schemes[i], v.Value, self.delta), delta=self.delta)
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def testSchemeTranslation(self):
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quantities = []
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for i in dir(FreeCAD.Units):
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if issubclass(type(getattr(FreeCAD.Units, i)), FreeCAD.Units.Quantity):
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quantities.append(i)
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schemes = FreeCAD.Units.listSchemas()
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for i in quantities:
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q1 = getattr(FreeCAD.Units, i)
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q1 = FreeCAD.Units.Quantity(q1)
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q1.Format = {'Precision': 16}
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for idx, val in enumerate(schemes):
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t = FreeCAD.Units.schemaTranslate(q1, idx)
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try:
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q2 = FreeCAD.Units.Quantity(t[0])
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if math.fabs(q1.Value - q2.Value) > 0.01:
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print (q1, " : ", q2, " : ", t, " : ", i, " : ", val)
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except Exception as e:
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print ("{}: {}".format(str(e), t[0]))
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def testVoltage(self):
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q1 = FreeCAD.Units.Quantity("1e20 V")
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t = FreeCAD.Units.schemaTranslate(q1, 0) # Standard
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q2 = FreeCAD.Units.Quantity(t[0])
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self.assertAlmostEqual(q1.Value, q2.Value, delta=self.delta)
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def testEnergy(self):
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q1 = FreeCAD.Units.Quantity("1e20 J")
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t = FreeCAD.Units.schemaTranslate(q1, 0) # Standard
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q2 = FreeCAD.Units.Quantity(t[0])
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self.assertAlmostEqual(q1.Value, q2.Value, delta=self.delta)
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def testTrigonometric(self):
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#tu=FreeCAD.Units.translateUnit
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self.failUnless(compare(tu('sin(pi)'), math.sin(math.pi)))
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self.failUnless(compare(tu('cos(pi)'), math.cos(math.pi)))
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self.failUnless(compare(tu('tan(pi)'), math.tan(math.pi)))
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