def _check___str__(self, test, expect):
        f = FrameSet(test)
        m = u'str(FrameSet("{0}")) != {0}: got {1}'
        r = str(f)
        self.assertEqual(r, str(test), m.format(test, r))
        m = u'str(FrameSet("{0}")) returns {1}: got {2}'
        self.assertIsInstance(r, str, m.format(test, str, type(r)))
Harness to test if the FrameSet.__str__ call works properly.
dataset/ETHPy150Open sqlboy/fileseq/test/run.py/TestFrameSet._check___str__