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import unittest
import FreeCAD

class DocumentTestCases(unittest.TestCase):
    """
    Test class for FreeCAD material tests that need a document
    """

    def setUp(self):
        self.doc = FreeCAD.newDocument()

    def tearDown(self):
        FreeCAD.closeDocument(self.doc.Name)

    def testApplyDiffuseColorCheckShapeAppearance(self):
        """ Test that applying a DiffuseColor with transparency results in a correct ShapeAppearance """
        dif_col_1 = (1.0, 1.0, 0.0, 0.0)  # yellow 0% transparent
        dif_col_2 = (1.0, 0.0, 0.0, 0.5)  # red 50% transparent
        dif_col = [dif_col_1] + [dif_col_2] + 4 * [dif_col_1]

        obj = self.doc.addObject("Part::Box")
        vobj = obj.ViewObject
        vobj.DiffuseColor = dif_col

        self.assertEqual(
            [m.DiffuseColor[:3] + (m.Transparency, ) for m in vobj.ShapeAppearance],
            vobj.DiffuseColor
        )

    def testApplyShapeAppearanceCheckDiffuseColor(self):
        """ Test that applying a ShapeAppearance with transparency results in a correct DiffuseColor """
        sapp_1 = FreeCAD.Material()
        sapp_1.DiffuseColor = (0.0, 1.0, 1.0, 1.0)  # cyan
        sapp_1.Transparency = 0.0                   # 0% transparent
        sapp_2 = FreeCAD.Material()
        sapp_2.DiffuseColor = (0.0, 1.0, 0.0, 1.0)  # green
        sapp_2.Transparency = 0.3                   # 30% transparent
        sapp = [sapp_1] + [sapp_2] + 4 * [sapp_1]

        obj = self.doc.addObject("Part::Box")
        vobj = obj.ViewObject
        vobj.ShapeAppearance = sapp

        self.assertEqual(
            [m.DiffuseColor[:3] + (m.Transparency, ) for m in vobj.ShapeAppearance],
            vobj.DiffuseColor
        )