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import unittest
import os
import alembic

class PropExceptTest(unittest.TestCase):
    """This tests for exceptions being thrown by PyAlembic when an invalid property
    index or name is passed into getProperty on either an IObject or an OObject."""

    def testExport(self):
        """
        Tests exception raising for invalid property indices and names
        on the write side.
        """
        a = alembic.Abc.OArchive("testPropException.abc")
        t = a.getTop()
        x = alembic.AbcGeom.OXform(t, "myxform")
        p = alembic.Abc.OStringProperty(x.getProperties(), "myprop")
        test = x.getProperties().getProperty("myprop")
        self.assertEqual(test.getName(), "myprop")
        test = x.getProperties().getProperty(1)
        self.assertEqual(test.getName(), "myprop")

        self.assertRaises(KeyError, x.getProperties().getProperty, "notfound")
        self.assertRaises(IndexError, x.getProperties().getProperty, 99)

    def testImport(self):
        """
        Tests exception raising for invalid property indices and names
        on the read side.
        """
        a = alembic.Abc.IArchive("testPropException.abc")
        t = a.getTop()
        props = t.children[0].getProperties()
        p = props.getProperty("myprop")
        self.assertEqual(p.getName(), "myprop")

        self.failUnlessRaises(KeyError, props.getProperty, "notfound")
        self.assertRaises(IndexError, props.getProperty, 99)