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# to you under the Apache License, Version 2.0 (the
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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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import unittest

import pytest

from pyhugegraph.utils.exceptions import NotFoundError
from tests.client_utils import ClientUtils


class TestGremlin(unittest.TestCase):
    client = None
    gremlin = None

    @classmethod
    def setUpClass(cls):
        cls.client = ClientUtils()
        cls.client.clear_graph_all_data()
        cls.gremlin = cls.client.gremlin
        cls.client.init_property_key()
        cls.client.init_vertex_label()
        cls.client.init_edge_label()

    @classmethod
    def tearDownClass(cls):
        cls.client.clear_graph_all_data()

    def setUp(self):
        self.client.init_vertices()
        self.client.init_edges()

    def tearDown(self):
        pass

    def test_query_all_vertices(self):
        vertices = self.gremlin.exec("g.V()")
        lst = vertices.get("data", [])
        self.assertEqual(6, len(lst))

        self.gremlin.exec("g.V().drop()")
        vertices = self.gremlin.exec("g.V()")
        lst = vertices.get("data", [])
        self.assertEqual(0, len(lst))

    def test_query_all_edges(self):
        edges = self.gremlin.exec("g.E()")
        lst = edges.get("data", [])
        self.assertEqual(6, len(lst))

        self.gremlin.exec("g.E().drop()")
        edges = self.gremlin.exec("g.E()")
        lst = edges.get("data", [])
        self.assertEqual(0, len(lst))

    def test_primitive_object(self):
        result = self.gremlin.exec("1 + 2")
        result_set = result.get("data", [])
        self.assertEqual(1, len(result_set))

        data = result_set[0]
        self.assertTrue(isinstance(data, int))
        self.assertEqual(3, data)

    def test_empty_result_set(self):
        result = self.gremlin.exec("g.V().limit(0)")
        lst = result.get("data", [])
        self.assertEqual(0, len(lst))

    def test_invalid_gremlin(self):
        with pytest.raises(NotFoundError):
            self.assertTrue(self.gremlin.exec("g.V2()"))

    def test_security_operation(self):
        with pytest.raises(NotFoundError):
            self.assertTrue(self.gremlin.exec("System.exit(-1)"))