test: add create_test_items helper for common test environment setup

src/tests.rs

@@ -34,6 +34,25 @@ mod tests {
         dir.close().expect("Failed to remove temporary directory");
     }
 
+    // Helper function to create test items with specific content and tags
+    fn create_test_items<F>(dir: &Path, f: F)
+    where
+        F: FnOnce(&str, &str),
+    {
+        // Set the data directory for this test
+        let env = format!("KEEP_DIR={} cargo run --", dir.display());
+
+        // Create test items
+        let input_a = "test content A";
+        let input_b = "test content B";
+
+        // Create first item with tag_a
+        f(input_a, "tag_a");
+        
+        // Create second item with tag_b
+        f(input_b, "tag_b");
+    }
+
     // Helper function to check if a file exists in the data directory
     fn file_exists(data_dir: &Path, id: i64) -> bool {
         let path = data_dir.join(id.to_string());