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from unittest.mock import call, Mock, patch

import pytest
from flask import current_app

from superset.utils import decorators
from tests.integration_tests.base_tests import SupersetTestCase


class UtilsDecoratorsTests(SupersetTestCase):
    def test_debounce(self):
        mock = Mock()

        @decorators.debounce()
        def myfunc(arg1: int, arg2: int, kwarg1: str = "abc", kwarg2: int = 2):
            mock(arg1, kwarg1)
            return arg1 + arg2 + kwarg2

        # should be called only once when arguments don't change
        myfunc(1, 1)
        myfunc(1, 1)
        result = myfunc(1, 1)
        mock.assert_called_once_with(1, "abc")
        self.assertEqual(result, 4)

        # kwarg order shouldn't matter
        myfunc(1, 0, kwarg2=2, kwarg1="haha")
        result = myfunc(1, 0, kwarg1="haha", kwarg2=2)
        mock.assert_has_calls([call(1, "abc"), call(1, "haha")])
        self.assertEqual(result, 3)

    def test_statsd_gauge(self):
        @decorators.statsd_gauge("custom.prefix")
        def my_func(fail: bool, *args, **kwargs):
            if fail:
                raise ValueError("Error")
            return "OK"

        with patch.object(current_app.config["STATS_LOGGER"], "gauge") as mock:
            my_func(False, 1, 2)
            mock.assert_called_once_with("custom.prefix.ok", 1)

            with pytest.raises(ValueError):
                my_func(True, 1, 2)
                mock.assert_called_once_with("custom.prefix.error", 1)