update: Strict ordering for outpu (use BTreeMap instead of HashMap)

tests/cli.rs

@@ -1,5 +1,9 @@
 mod integrated_test {
-    use std::path::PathBuf;
+    use std::{
+        fs::File,
+        io::{BufRead, BufReader},
+        path::PathBuf,
+    };
 
     use anyhow::Result;
     use assert_cmd::{assert::OutputAssertExt, Command};
@@ -19,6 +23,15 @@ mod integrated_test {
             .success()
             .stdout(predicate::str::contains("Creating new file"));
 
+        // check output
+        {
+            let f = File::open(test_out.clone())?;
+            let r = BufReader::new(f);
+            assert!(r
+                .lines()
+                .any(|line| { line.unwrap().contains("8868,,A-0-1,0,1,1,0,1,8,1,") }));
+        }
+
         // 2nd file
         let mut cmd = Command::cargo_bin("psb-qaqc-parse")?;
         cmd.current_dir("tests")