def test_reparse_on_scope_change(self):
        self.top.comp.x = 99.5
        self.top.comp.y = -3.14

        ex = ExprEvaluator('comp.x', self.top)
        self.assertEqual(99.5, ex.evaluate())
        self.assertEqual(new_text(ex), "scope.get('comp.x')")

        ex.scope = self.top.a
        try:
            ex.set(0.5)
        except __HOLE__ as err:
            self.assertEqual(str(err), "a: 'A' object has no attribute 'comp'")
        else:
            self.fail("AttributeError expected")
        self.assertEqual(new_text(ex), "scope.get('comp.x')")
        self.assertEqual(99.5, ex.evaluate(self.top)) # set scope back to self.top
        self.assertEqual(new_text(ex), "scope.get('comp.x')")

        ex.text = 'comp.y'
        try:
            ex.evaluate(self.top.a)
        except AttributeError as err:
            self.assertEqual(str(err), "can't evaluate expression 'comp.y':"
                             " a: name 'comp' is not defined")
        else:
            self.fail("AttributeError expected")
        ex.scope = self.top
        ex.set(11.1)
        self.assertEqual(11.1, self.top.comp.y)
        self.assertEqual(new_text(ex), "scope.get('comp.y')")
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/test/test_evalexpr.py/ExprEvalTestCase.test_reparse_on_scope_change