test: add tests for scootaloo alt services + regexp

tests/config.rs

@@ -1,4 +1,33 @@
 use scootaloo::parse_toml;
+use std::collections::HashMap;
+
+#[test]
+fn test_alt_services() {
+    let toml = parse_toml("tests/no_test_alt_services.toml");
+    assert_eq!(toml.scootaloo.alternative_services_for, None);
+
+    let toml = parse_toml("tests/test_alt_services.toml");
+    assert_eq!(
+        toml.scootaloo.alternative_services_for,
+        Some(HashMap::from([
+            ("tamere.lol".to_string(), "tonpere.mdr".to_string()),
+            ("you.pi".to_string(), "you.pla".to_string())
+        ]))
+    );
+}
+
+#[test]
+fn test_re_display() {
+    let toml = parse_toml("tests/no_show_url_as_display_url_for.toml");
+    assert_eq!(toml.scootaloo.show_url_as_display_url_for, None);
+
+    let toml = parse_toml("tests/show_url_as_display_url_for.toml");
+
+    assert_eq!(
+        toml.scootaloo.show_url_as_display_url_for,
+        Some("^(.+)\\.es$".to_string())
+    );
+}
 
 #[test]
 fn test_page_size() {