pr-conflict-detector/test_env_get_bool.py at main · github-community-projects/pr-conflict-detector · GitHub

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"""Test the get_bool_env_var function"""

import os
import unittest
from unittest.mock import patch

from env import get_bool_env_var


class TestEnv(unittest.TestCase):
    """Test the get_bool_env_var function"""

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "true",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_true(self):
        """Test that gets a boolean environment variable that exists and is true"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertTrue(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "True",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_true_capitalized(self):
        """Test that gets a boolean environment variable with capitalized True"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertTrue(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "TRUE",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_true_upper(self):
        """Test that gets a boolean environment variable with uppercase TRUE"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertTrue(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "false",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_false(self):
        """Test that gets a boolean environment variable that exists and is false"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertFalse(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "nope",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_false_due_to_invalid_value(self):
        """Test that gets a boolean environment variable that exists and is false
        due to an invalid value
        """
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertFalse(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_empty(self):
        """Test that gets a boolean environment variable that exists but is empty"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertFalse(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_exists_and_is_empty_with_default_true(self):
        """Test that gets a boolean environment variable that is empty with default True"""
        result = get_bool_env_var("TEST_BOOL", True)
        self.assertTrue(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "false",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_does_not_exist_and_default_value_returns_true(self):
        """Test that gets a boolean environment variable that does not exist
        and default value returns: true
        """
        result = get_bool_env_var("DOES_NOT_EXIST", True)
        self.assertTrue(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "true",
        },
        clear=True,
    )
    def test_get_bool_env_var_that_does_not_exist_and_default_value_returns_false(self):
        """Test that gets a boolean environment variable that does not exist
        and default value returns: false
        """
        result = get_bool_env_var("DOES_NOT_EXIST", False)
        self.assertFalse(result)

    @patch.dict(
        os.environ,
        {
            "TEST_BOOL": "  true  ",
        },
        clear=True,
    )
    def test_get_bool_env_var_with_whitespace(self):
        """Test that gets a boolean environment variable with leading/trailing whitespace"""
        result = get_bool_env_var("TEST_BOOL", False)
        self.assertTrue(result)


if __name__ == "__main__":
    unittest.main()