importer feature

crates/adapters/importer/src/parsers/mod.rs

@@ -0,0 +1,50 @@
+mod csv;
+mod json;
+#[cfg(feature = "xlsx")]
+mod xlsx;
+
+pub use csv::parse_csv;
+pub use json::parse_json;
+#[cfg(feature = "xlsx")]
+pub use xlsx::parse_xlsx;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn csv_parses_headers_and_rows() {
+        let data = b"title,rating,watched_at\nInception,5,2024-01-01\nDune,4,2024-02-15\n";
+        let file = parse_csv(data).unwrap();
+        assert_eq!(file.columns, vec!["title", "rating", "watched_at"]);
+        assert_eq!(file.rows.len(), 2);
+        assert_eq!(file.rows[0], vec!["Inception", "5", "2024-01-01"]);
+    }
+
+    #[test]
+    fn csv_rejects_empty() {
+        assert!(parse_csv(b"").is_err());
+    }
+
+    #[test]
+    fn tsv_parses_correctly() {
+        let data = b"title\trating\nInception\t5\n";
+        let file = parse_csv(data).unwrap();
+        assert_eq!(file.columns, vec!["title", "rating"]);
+        assert_eq!(file.rows[0], vec!["Inception", "5"]);
+    }
+
+    #[test]
+    fn json_array_of_objects() {
+        let data = br#"[{"title":"Inception","rating":"5"},{"title":"Dune","rating":"4"}]"#;
+        let file = parse_json(data).unwrap();
+        assert_eq!(file.columns.len(), 2);
+        assert!(file.columns.contains(&"title".to_string()));
+        assert_eq!(file.rows.len(), 2);
+    }
+
+    #[test]
+    fn json_empty_array_errors() {
+        assert!(parse_json(b"[]").is_err());
+    }
+}