Utils: Added is_it_true utility function

Also added documentation and tests to go along with it

.github/workflows/tests.yml

@@ -33,5 +33,5 @@ jobs:
     - name: Run tests
       run: |
         PYTHON_VERSION=${{ matrix.python-version }}
-        TOX_ENV="py${PYTHON_VERSION//./}"
+        TOX_ENV=`tox --listenvs | grep "py${PYTHON_VERSION//./}-" | tr '\n' ','`
         tox -e $TOX_ENV

docs/requirements.txt

@@ -1,4 +1,4 @@
-flask>=2.0.0
+flask>=2.2.0
 sphinx==7.1.2
 sphinx-notfound-page
 sphinx-rtd-theme==1.3.0rc1

docs/source/api.rst

@@ -27,6 +27,12 @@ Decorators
 .. automodule:: flask_utils.decorators
     :members:
 
+Utilities
+---------
+
+.. automodule:: flask_utils.utils
+    :members:
+
 Private API
 ----------------------
 

flask_utils/__init__.py

@@ -1,5 +1,5 @@
 # Increment versions here according to SemVer
-__version__ = "0.3.0"
+__version__ = "0.4.0"
 
 from flask_utils.errors import ConflictError
 from flask_utils.errors import ForbiddenError
@@ -15,6 +15,7 @@
 
 from flask_utils.decorators import validate_params
 
+from flask_utils.utils import is_it_true
 
 from flask_utils.errors import register_error_handlers
 
@@ -32,4 +33,5 @@
     "UnprocessableEntityError",
     "ServiceUnavailableError",
     "validate_params",
+    "is_it_true",
 ]

flask_utils/utils.py

@@ -0,0 +1,36 @@
+def is_it_true(value: str) -> bool:
+    """
+    This function checks if a string value is true.
+    Useful for flask's request.form.get() method and request.args.get() method
+
+    :param value: String value to check if it is true
+    :return: True if value is true, False otherwise
+
+    :Example:
+
+    .. code-block:: python
+
+        from flask_utils import is_it_true
+
+        @app.route('/example', methods=['GET'])
+        def example():
+            is_ordered = request.args.get('is_ordered', type=is_it_true, default=False)
+
+    This allows your API to accept these kind of requests:
+
+    .. code-block:: python
+
+        import requests
+
+        response = requests.get('http://localhost:5000/example?is_ordered=true')
+        print(response.json())  # True
+
+        response = requests.get('http://localhost:5000/example?is_ordered=1')
+        print(response.json())  # True
+
+        response = requests.get('http://localhost:5000/example?is_ordered=yes')
+        print(response.json())  # True
+
+    .. versionadded:: 0.4.0
+    """
+    return value.lower() in ("true", "1", "yes")

requirements.txt

@@ -1 +1 @@
-flask>=2.0.0
+flask>=2.2.0

tests/test_utils.py

@@ -0,0 +1,76 @@
+import pytest
+from flask import jsonify
+from flask import request
+
+from flask_utils import is_it_true
+
+
+class TestIsItTrueFunction:
+    def test_string_true(self):
+        assert is_it_true("true") is True
+
+    def test_string_true_uppercase(self):
+        assert is_it_true("TRUE") is True
+
+    def test_string_true_yes(self):
+        assert is_it_true("yes") is True
+
+    def test_string_true_yes_uppercase(self):
+        assert is_it_true("YES") is True
+
+    def test_string_true_one(self):
+        assert is_it_true("1") is True
+
+    def test_string_false(self):
+        assert is_it_true("false") is False
+
+    def test_string_false_no(self):
+        assert is_it_true("no") is False
+
+    def test_string_false_zero(self):
+        assert is_it_true("0") is False
+
+
+class TestIsItTrueInFlask:
+    @pytest.fixture(autouse=True)
+    def setup(self, flask_client):
+        @flask_client.route("/example", methods=["GET"])
+        def example():
+            is_ordered = request.args.get("is_ordered", type=is_it_true, default=False)
+            return jsonify(is_ordered)
+
+    def test_is_ordered_true(self, client):
+        response = client.get("example?is_ordered=true")
+        assert response.json is True
+
+    def test_is_ordered_true_uppercase(self, client):
+        response = client.get("example?is_ordered=TRUE")
+        assert response.json is True
+
+    def test_is_ordered_true_yes(self, client):
+        response = client.get("example?is_ordered=yes")
+        assert response.json is True
+
+    def test_is_ordered_true_yes_uppercase(self, client):
+        response = client.get("example?is_ordered=YES")
+        assert response.json is True
+
+    def test_is_ordered_true_one(self, client):
+        response = client.get("example?is_ordered=1")
+        assert response.json is True
+
+    def test_is_ordered_false(self, client):
+        response = client.get("example?is_ordered=false")
+        assert response.json is False
+
+    def test_is_ordered_false_no(self, client):
+        response = client.get("example?is_ordered=no")
+        assert response.json is False
+
+    def test_is_ordered_false_zero(self, client):
+        response = client.get("example?is_ordered=0")
+        assert response.json is False
+
+    def test_is_ordered_default(self, client):
+        response = client.get("example")
+        assert response.json is False

tox.ini

@@ -1,11 +1,9 @@
 [tox]
-envlist = py{38,39,310,311,312}-flask{20,21,22,23,30,latest}
+envlist = py{38,39,310,311,312}-flask{22,23,30,latest}
 
 [testenv]
 deps =
     pytest
-    flask20: Flask==2.*
-    flask21: Flask==2.1.*
     flask22: Flask==2.2.*
     flask23: Flask==2.3.*
     flask30: Flask==3.*