From aa9aaad78cace0b5a037a241838cf5a4062fc5d5 Mon Sep 17 00:00:00 2001
From: Eric Redon <eric.redon@coox.org>
Date: Sun, 10 May 2020 16:20:13 +0200
Subject: [PATCH] Add simple tests against the project using IPv4 and IPv6

---
 CONTRIBUTING.md |  8 ++++++++
 tests.py        | 22 ++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 tests.py

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 48dfd4f..2fabf19 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,5 +1,13 @@
 ## Development Environment FAQ
 
+### How to run tests?
+
+From the project root directory, execute the following command:
+
+```sh
+python ./manage.py test
+```
+
 ### How to maintain `requirements.txt`?
 
 The canonical list of installation requirements (including development requirements) is maintained in the [`setup.py`](setup.py) file.
diff --git a/tests.py b/tests.py
new file mode 100644
index 0000000..34bb236
--- /dev/null
+++ b/tests.py
@@ -0,0 +1,22 @@
+from django.urls import reverse
+from django.test import Client, TestCase
+
+
+class UngleichScreeningTaskTests(TestCase):
+    def setUp(self):
+        self.ipv4_client = Client(REMOTE_ADDR="127.0.0.1")
+        self.ipv6_client = Client(REMOTE_ADDR="::1")
+
+    def test_project_using_ipv4(self):
+        url = reverse("index")
+        response = self.ipv4_client.get(url)
+        self.assertContains(
+            response, "Sorry, only reachable by IPv6", status_code=400, html=True
+        )
+
+    def test_project_using_ipv6(self):
+        url = reverse("index")
+        response = self.ipv6_client.get(url)
+        self.assertContains(
+            response, "A friendly cat picture", status_code=200, html=True
+        )