failing multi chord test from file

src/play.rs

@@ -0,0 +1,47 @@
+use std::io::Read;
+
+pub fn new<S: ToString>(s: S) -> Vec<String> {
+    parse(from_string(s.to_string()))
+}
+
+fn from_string(s: String) -> String {
+    match std::fs::File::open(s.clone()) {
+        Ok(mut reader) => {
+            let mut content = String::new();
+            reader
+                .read_to_string(&mut content)
+                .expect(format!("failed to read {}", s).as_ref());
+            content.split_whitespace().collect::<Vec<_>>().join(" ")
+        }
+        Err(_) => s,
+    }
+}
+
+fn parse(s: String) -> Vec<String> {
+    vec![s]
+}
+
+#[cfg(test)]
+mod test {
+    #[test]
+    fn test_string() {
+        assert_eq!(super::new("a b c")[0], "a b c".to_string());
+        assert_eq!(super::new("a b c".to_string())[0], "a b c".to_string());
+    }
+
+    #[test]
+    fn test_single_line_file() {
+        assert_eq!(
+            super::new("src/testdata/single_line_file.txt")[0],
+            "a b c".to_string()
+        );
+    }
+
+    #[test]
+    fn test_two_channels_one_bar() {
+        assert_eq!(
+            super::new("src/testdata/two_channels_one_bar.txt")[0],
+            "a b c".to_string()
+        );
+    }
+}