test: add tests for correct parsing of ignore directories

Author: ThinkerDreamer

static-serve-macro/src/lib.rs

@@ -414,3 +414,35 @@ fn etag(contents: &[u8]) -> String {
         ^ u64::from_le_bytes(sha256[8..16].try_into().unwrap());
     format!("\"{hash:016x}\"")
 }
+
+#[cfg(test)]
+mod test {
+    use quote::quote;
+    use syn::parse2;
+
+    use crate::IgnoreDirsWithSpan;
+
+    #[test]
+    fn handles_ident_ignoredirs() {
+        let res = parse2::<IgnoreDirsWithSpan>(quote! {[big]});
+        assert!(res.is_ok());
+    }
+
+    #[test]
+    fn handles_litstr_ignoredirs() {
+        let res = parse2::<IgnoreDirsWithSpan>(quote! {["big"]});
+        assert!(res.is_ok());
+    }
+
+    #[test]
+    fn errors_on_invalid_ignoredir() {
+        let res = parse2::<IgnoreDirsWithSpan>(quote! {[2]});
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn errors_on_ignoredirs_one_invalid() {
+        let res = parse2::<IgnoreDirsWithSpan>(quote! {[big, 2]});
+        assert!(res.is_err());
+    }
+}