From 874e35b91659601ec96fb257264a3b25b9cbcedb Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Tue, 30 Dec 2025 10:49:28 -0500
Subject: [PATCH] Write a test for config validation

---
 cmd/mailbox-shuffler/config_test.go | 104 ++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 cmd/mailbox-shuffler/config_test.go

diff --git a/cmd/mailbox-shuffler/config_test.go b/cmd/mailbox-shuffler/config_test.go
new file mode 100644
index 0000000..871449e
--- /dev/null
+++ b/cmd/mailbox-shuffler/config_test.go
@@ -0,0 +1,104 @@
+// mailpopbox
+// Copyright 2025 Blue Static <https://www.bluestatic.org>
+// This program is free software licensed under the GNU General Public License,
+// version 3.0. The full text of the license can be found in LICENSE.txt.
+// SPDX-License-Identifier: GPL-3.0-only
+
+package main
+
+import (
+	"testing"
+)
+
+func TestInvalidConfigs(t *testing.T) {
+	configs := []Config{
+		// Missing Email.
+		{
+			Monitor: []MonitorConfig{{
+				PollIntervalSeconds: 10,
+				Source: ServerConfig{
+					Type:       ServerTypePOP3,
+					ServerAddr: "localhost:995",
+				},
+				Destination: ServerConfig{
+					Type:  ServerTypeGmail,
+					Email: "here",
+				},
+			}},
+		},
+		{
+			Monitor: []MonitorConfig{{
+				PollIntervalSeconds: 10,
+				Source: ServerConfig{
+					Type:       ServerTypePOP3,
+					Email:      "here",
+					ServerAddr: "localhost:995",
+				},
+				Destination: ServerConfig{Type: ServerTypeGmail},
+			}},
+		},
+		// Missing PollIntervalSeconds.
+		{
+			Monitor: []MonitorConfig{{
+				Source: ServerConfig{
+					Type:       ServerTypePOP3,
+					Email:      "here",
+					ServerAddr: "localhost:995",
+				},
+				Destination: ServerConfig{
+					Type:  ServerTypeGmail,
+					Email: "here",
+				},
+			}},
+		},
+		// Missing ServerAddr.
+		{
+			Monitor: []MonitorConfig{{
+				PollIntervalSeconds: 10,
+				Source: ServerConfig{
+					Type:  ServerTypePOP3,
+					Email: "here",
+				},
+				Destination: ServerConfig{
+					Type:  ServerTypeGmail,
+					Email: "here",
+				},
+			}},
+		},
+		// Invalid server types.
+		{
+			Monitor: []MonitorConfig{{
+				PollIntervalSeconds: 10,
+				Source: ServerConfig{
+					Type:       ServerType("pop5"),
+					Email:      "here",
+					ServerAddr: "localhost:995",
+				},
+				Destination: ServerConfig{
+					Type:  ServerTypeGmail,
+					Email: "here",
+				},
+			}},
+		},
+		{
+			Monitor: []MonitorConfig{{
+				PollIntervalSeconds: 10,
+				Source: ServerConfig{
+					Type:       ServerTypePOP3,
+					Email:      "here",
+					ServerAddr: "localhost:995",
+				},
+				Destination: ServerConfig{
+					Type:  ServerType("google-inbox-rip"),
+					Email: "here",
+				},
+			}},
+		},
+	}
+	for i, cfg := range configs {
+		err := cfg.Validate()
+		if err == nil {
+			t.Errorf("Expected error for config #%d: %#v", i, cfg)
+		}
+	}
+}
-- 
2.43.5