diff --git a/sites/management/commands/tests/__init__.py b/sites/management/commands/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/sites/management/commands/tests/test_scan.py b/sites/management/commands/tests/test_scan.py
new file mode 100644
index 00000000..bf8222e8
--- /dev/null
+++ b/sites/management/commands/tests/test_scan.py
@@ -0,0 +1,67 @@
+from sites.management.commands.scan import is_onion_available
+from django.test import TestCase
+
+
+class TestScan(TestCase):
+    def test_invalid_onion_available_over_http(self):
+        """Simulates a HTTP site with the onion location header,
+        which is invalid: Onion-Location is ignored if not served
+        over HTTPS
+        """
+        http_onion_available_pshtt = {
+            "endpoints": {
+                "http": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+                "https": {"headers": {}},
+                "httpswww": {"headers": {}},
+                "httpwww": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+            }
+        }
+        assert not is_onion_available(http_onion_available_pshtt)
+
+    def test_onion_available_over_https(self):
+        """Simulates a HTTPS site with the onion location header"""
+        https_onion_available_pshtt = {
+            "endpoints": {
+                "http": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+                "https": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+                "httpswww": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+                "httpwww": {
+                    "headers": {
+                        "onion-location": "https://www.foobar.onion/",
+                    },
+                },
+            }
+        }
+        assert is_onion_available(https_onion_available_pshtt)
+
+    def test_no_onion_available_over_https(self):
+        """Simulates a HTTPS site without the Onion-Location header"""
+        https_onion_not_available_pshtt = {
+            "endpoints": {
+                "http": {"headers": {}},
+                "https": {"headers": {}},
+                "httpswww": {"headers": {}},
+                "httpwww": {"headers": {}},
+            }
+        }
+        assert not is_onion_available(https_onion_not_available_pshtt)