Add some more server state tests.

tests/imagemagick.py

@@ -0,0 +1,14 @@
+#!/usr/bin/python3
+# This file was written by Damien Dart, <[email protected]>. This is
+# free and unencumbered software released into the public domain. For
+# more information, please refer to the accompanying "UNLICENCE" file.
+
+import re
+
+
+def test_imagemagick_has_pdf_and_webp_support(host):
+    cmd = host.run("convert identify -list format")
+
+    assert cmd.succeeded
+    assert re.search(r"PDF\s*rw+", cmd.stdout)
+    assert re.search(r"WEBP\s*rw[-+]", cmd.stdout)