package/python-whitenoise: new package

The test is using the django integration of whitenoise as it's the most
common setup and allows to model the test case after the django one as
well.

The setup we need to do is a bit more complicated though and follows
the whitenoise getting started documentation [1].

We then request a .css file from the django admin app that is enabled
by default in template project. Due to running django's development
server with --nostatic we ensure that static file handling is taken over
by whitenoise.

[1] https://whitenoise.readthedocs.io/en/stable/django.html

Signed-off-by: Marcus Hoffmann <buildroot@bubu1.eu>
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -2280,6 +2280,7 @@ F:	package/python-typing-inspection/
 F:	package/python-tzlocal/
 F:	package/python-sdbus-modemmanager/
 F:	package/python-waitress/
+F:	package/python-whitenoise/
 F:	support/testing/tests/package/test_python_apscheduler.py
 F:	support/testing/tests/package/test_python_crc.py
 F:	support/testing/tests/package/test_python_django.py
@@ -2290,6 +2291,7 @@ F:	support/testing/tests/package/test_python_ruamel_yaml.py
 F:	support/testing/tests/package/test_python_sdbus_modemmanager.py
 F:	support/testing/tests/package/test_python_tzlocal.py
 F:	support/testing/tests/package/test_python_waitress.py
+F:	support/testing/tests/package/test_python_whitenoise.py
 F:	support/testing/tests/package/sample_python_apscheduler.py
 F:	support/testing/tests/package/sample_python_crc.py
 F:	support/testing/tests/package/sample_python_django.py

package/Config.in

@@ -1492,6 +1492,7 @@ menu "External python modules"
 	source "package/python-websocket-client/Config.in"
 	source "package/python-websockets/Config.in"
 	source "package/python-werkzeug/Config.in"
+	source "package/python-whitenoise/Config.in"
 	source "package/python-whoosh/Config.in"
 	source "package/python-wrapt/Config.in"
 	source "package/python-ws4py/Config.in"

package/python-whitenoise/Config.in

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_PYTHON_WHITENOISE
+	bool "python-whitenoise"
+	help
+	  Radically simplified static file serving for WSGI
+	  applications.
+
+	  https://github.com/evansd/whitenoise

package/python-whitenoise/python-whitenoise.hash

@@ -0,0 +1,5 @@
+# md5, sha256 from https://pypi.org/pypi/whitenoise/json
+md5  212cafd7f8d972a5d6740bfc88b3f17b  whitenoise-6.11.0.tar.gz
+sha256  0f5bfce6061ae6611cd9396a8231e088722e4fc67bc13a111be74c738d99375f  whitenoise-6.11.0.tar.gz
+# Locally computed sha256 checksums
+sha256  ebfd469b4fb6b5adada547747e1e8da725ecf20595d54aced043275d4f4a3600  LICENSE

package/python-whitenoise/python-whitenoise.mk

@@ -0,0 +1,14 @@
+################################################################################
+#
+# python-whitenoise
+#
+################################################################################
+
+PYTHON_WHITENOISE_VERSION = 6.11.0
+PYTHON_WHITENOISE_SOURCE = whitenoise-$(PYTHON_WHITENOISE_VERSION).tar.gz
+PYTHON_WHITENOISE_SITE = https://files.pythonhosted.org/packages/15/95/8c81ec6b6ebcbf8aca2de7603070ccf37dbb873b03f20708e0f7c1664bc6
+PYTHON_WHITENOISE_SETUP_TYPE = setuptools
+PYTHON_WHITENOISE_LICENSE = MIT
+PYTHON_WHITENOISE_LICENSE_FILES = LICENSE
+
+$(eval $(python-package))

support/testing/tests/package/test_python_whitenoise.py

@@ -0,0 +1,41 @@
+import time
+
+from tests.package.test_python import TestPythonPackageBase
+
+
+class TestPythonPy3Whitenoise(TestPythonPackageBase):
+    __test__ = True
+    config = TestPythonPackageBase.config + \
+        """
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_DJANGO=y
+        BR2_PACKAGE_PYTHON_WHITENOISE=y
+        BR2_PACKAGE_PYTHON3_SQLITE=y
+        """
+
+    def test_run(self):
+        self.login()
+        timeout = 35
+
+        cmd = "cd /opt && /usr/bin/django-admin startproject testsite"
+        self.assertRunOk(cmd, timeout=timeout)
+        # STATIC_ROOT needs to be set for 'collectstatic' to work.
+        self.emulator.run("echo 'STATIC_ROOT = BASE_DIR / \"staticfiles\"' >> /opt/testsite/testsite/settings.py")
+        cmd = "cd /opt/testsite && " + self.interpreter + " ./manage.py collectstatic"
+        self.assertRunOk(cmd, timeout=timeout)
+        # whitenoise docs say it needs to be added directly after SecurityMiddleware, so we do this here with sed.
+        cmd = """sed -i -e /django.middleware.security.SecurityMiddleware/a\\ \\"whitenoise.middleware.WhiteNoiseMiddleware\\",\
+        /opt/testsite/testsite/settings.py"""
+        self.assertRunOk(cmd, timeout=timeout)
+        # --nostatic ensures the builtin django server doesn't serve the static files,
+        # so we can test that whitenoise serves them
+        cmd = "cd /opt/testsite && " + self.interpreter + " ./manage.py runserver --nostatic 0.0.0.0:1234 > /dev/null 2>&1 & "
+        self.assertRunOk(cmd, timeout=timeout)
+        # give some time to setup the server
+        for attempt in range(30 * self.emulator.timeout_multiplier):
+            time.sleep(1)
+            cmd = "wget http://127.0.0.1:1234/static/admin/css/base.css"
+            _, exit_code = self.emulator.run(cmd)
+            if exit_code == 0:
+                break
+        self.assertEqual(exit_code, 0, "Timeout while waiting for django server")