Method test_limit

test/asynchronous/test_cursor.py:460–509

(self)

        self.assertEqual(99, first.get("i"))

    async def test_limit(self):
        db = self.db

        with self.assertRaises(TypeError):
            db.test.find().limit(None)  # type: ignore[arg-type]
        with self.assertRaises(TypeError):
            db.test.find().limit("hello")  # type: ignore[arg-type]
        with self.assertRaises(TypeError):
            db.test.find().limit(5.5)  # type: ignore[arg-type]
        self.assertTrue((db.test.find()).limit(5))

        await db.test.drop()
        await db.test.insert_many([{"x": i} for i in range(100)])

        count = 0
        async for _ in db.test.find():
            count += 1
        self.assertEqual(count, 100)

        count = 0
        async for _ in db.test.find().limit(20):
            count += 1
        self.assertEqual(count, 20)

        count = 0
        async for _ in db.test.find().limit(99):
            count += 1
        self.assertEqual(count, 99)

        count = 0
        async for _ in db.test.find().limit(1):
            count += 1
        self.assertEqual(count, 1)

        count = 0
        async for _ in db.test.find().limit(0):
            count += 1
        self.assertEqual(count, 100)

        count = 0
        async for _ in db.test.find().limit(0).limit(50).limit(10):
            count += 1
        self.assertEqual(count, 10)

        a = db.test.find()
        a.limit(10)
        async for _ in a:
            break
        with self.assertRaises(InvalidOperation):
            a.limit(5)

    async def test_max(self):
        db = self.db