test_gc.py 文件源码

def test_get_stats(self):
        stats = gc.get_stats()
        self.assertEqual(len(stats), 3)
        for st in stats:
            self.assertIsInstance(st, dict)
            self.assertEqual(set(st),
                             {"collected", "collections", "uncollectable"})
            self.assertGreaterEqual(st["collected"], 0)
            self.assertGreaterEqual(st["collections"], 0)
            self.assertGreaterEqual(st["uncollectable"], 0)
        # Check that collection counts are incremented correctly
        if gc.isenabled():
            self.addCleanup(gc.enable)
            gc.disable()
        old = gc.get_stats()
        gc.collect(0)
        new = gc.get_stats()
        self.assertEqual(new[0]["collections"], old[0]["collections"] + 1)
        self.assertEqual(new[1]["collections"], old[1]["collections"])
        self.assertEqual(new[2]["collections"], old[2]["collections"])
        gc.collect(2)
        new = gc.get_stats()
        self.assertEqual(new[0]["collections"], old[0]["collections"] + 1)
        self.assertEqual(new[1]["collections"], old[1]["collections"])
        self.assertEqual(new[2]["collections"], old[2]["collections"] + 1)