Add self-tests to the encryption providers.

modules/encryption/enc_sha1.cpp

@@ -178,6 +178,11 @@ public:
 	{
 		if (ModuleManager::FindFirstOf(ENCRYPTION) == this)
 			throw ModuleException("enc_sha1 is deprecated and can not be used as a primary encryption method");
+
+		sha1provider.Check({
+			{ "da39a3ee5e6b4b0d3255bfef95601890afd80709", "" },
+			{ "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12", "The quick brown fox jumps over the lazy dog" },
+		});
 	}
 
 	EventReturn OnEncrypt(const Anope::string &src, Anope::string &dest) override