#   (c) Juergen Riegel (juergen.riegel@web.de) 20010 LGPL   

import FreeCAD, os, unittest, math

def tu(str):
	return FreeCAD.Units.Quantity(str).Value
	
	
#---------------------------------------------------------------------------
# define the functions to test the FreeCAD UnitApi code
#---------------------------------------------------------------------------

def compare(x,y): return math.fabs(x-y)<0.00001

class UnitBasicCases(unittest.TestCase):

    def testConversions(self):
        #tu = FreeCAD.Units.translateUnit
        self.failUnless(compare(  tu('10 m')                 , 10000.0          ) )
        self.failUnless(compare(  tu('3/8 in')               , 9.525            ) )
        self.failUnless(compare(  tu('100 km/h')             , 27777.77777777   ) )
        self.failUnless(compare(  tu('m^2*kg*s^-3*A^-2')     , 1000000.0        ) )
        self.failUnless(compare(  tu('(m^2*kg)/(A^2*s^3)')   , 1000000.0        ) )
        self.failUnless(compare(  tu('2*pi rad')             , 360.0            ) )
        self.failUnless(compare(  tu('2*pi rad') / tu('gon') , 400.0            ) )

    def testImperial(self):
        #tu = FreeCAD.Units.translateUnit
        self.failUnless(compare(  tu('3/8 in')         , 9.525            ) )
        self.failUnless(compare(  tu('1fo (3+7/16)in') , 392.112500       ) )
        self.failUnless(compare(  tu('1\' (3+7/16)"')  , 392.112500       ) )

    def testTrigonometric(self):
        #tu = FreeCAD.Units.translateUnit
        self.failUnless(compare(  tu('sin(pi)')        ,  math.sin(math.pi) ) )
        self.failUnless(compare(  tu('cos(pi)')        ,  math.cos(math.pi) ) )
        self.failUnless(compare(  tu('tan(pi)')        ,  math.tan(math.pi) ) )