diff --git a/data/SPY_test.csv b/data/SPY_test.csv
new file mode 100644
index 0000000..a77e7be
--- /dev/null
+++ b/data/SPY_test.csv
@@ -0,0 +1,2 @@
+date,open,high,low,close,Adj Close,Volume
+2020-05-29,302.4599914550781,304.9599914550781,299.4700012207031,304.32000732421875,286.5516357421875,119090800
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 2fc7432..6bd357e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -217,11 +217,10 @@ struct CSVData {
 
 // https://docs.rs/csv/latest/csv/struct.Reader.html
 pub fn get_bar_from_csv(symbol: &str) -> Result<Vec<Bar>, Box<dyn std::error::Error>> {
-    let mut rdr = csv::ReaderBuilder::new()
+    csv::ReaderBuilder::new()
         .has_headers(true)
-        .from_reader( File::open(format!("data/{symbol}.csv"))?);
-
-    rdr.deserialize::<CSVData>().map(|line| {
+        .from_reader( File::open(format!("data/{symbol}.csv"))?)
+        .deserialize::<CSVData>().map(|line| {
         let record = line?;
         Ok(Bar {
             date: OffsetDateTime::now_utc(),
diff --git a/tests/csv_test.rs b/tests/csv_test.rs
index 1d7d1b7..f81d480 100644
--- a/tests/csv_test.rs
+++ b/tests/csv_test.rs
@@ -20,7 +20,8 @@ mod tests {
             .filter_level(log::LevelFilter::Info)
             .init();
 
-        let bars = get_bar_from_csv("SPY");
-        log::info!("{:?}", bars)
+        // from /data/SPY_test.csv
+        assert_eq!(302.4599914550781, get_bar_from_csv("SPY_test").unwrap()[0].open);
+        assert_eq!(304.32000732421875, get_bar_from_csv("SPY_test").unwrap()[0].close);
     }
 }