use simpler mactime2 tests

tests/mactime2/is_sorted.rs

@@ -1,8 +1,12 @@
-use std::{path::PathBuf, io::{BufReader, Cursor, BufRead}};
+use std::{
+    io::{BufRead, BufReader, Cursor},
+    path::PathBuf,
+};
 
 use assert_cmd::Command;
 use more_asserts::assert_le;
 
+/// tests if the result of `mactime2` is always sorted
 #[test]
 fn is_sorted() {
     let mut cmd = Command::cargo_bin("mactime2").unwrap();

tests/mactime2/is_stable_sorting.rs

@@ -0,0 +1,44 @@
+use std::io::{BufReader, Cursor, BufRead};
+use lazy_regex::regex;
+use assert_cmd::Command;
+
+/// tests if the result of `mactime2` is a stable sort, i.e. if pos(a)<=pos(b) then sorted_pos(a) <= sorted_pos(b)
+#[test]
+fn is_stable_sorted() {
+    let mut cmd = Command::cargo_bin("mactime2").unwrap();
+
+    let sample_bodyfile =
+        "0|a|1703937|d/drwxr-xr-x|0|0|4096|1661774613|1661774613|1661774613|1661774613
+0|b|11|d/drwx------|0|0|16384|1661774613|1661774613|1661774613|1661774613
+0|c|11|d/drwx------|0|0|16384|1661774613|1661774613|1661774613|1661774613";
+
+    let result = cmd
+        .arg("-d")
+        .arg("-b")
+        .arg("-")
+        .write_stdin(sample_bodyfile)
+        .ok();
+    assert!(result.is_ok());
+
+    let reader = BufReader::new(Cursor::new(result.unwrap().stdout));
+    let lines: Vec<_> = reader
+        .lines()
+        .map_while(Result::ok)
+        .map(name_of)
+        .collect();
+    assert_eq!(lines.len(), 3);
+    assert_eq!(lines[0].as_ref().unwrap(), "a");
+    assert_eq!(lines[1].as_ref().unwrap(), "b");
+    assert_eq!(lines[2].as_ref().unwrap(), "c");
+}
+
+fn name_of(line: String) -> Option<String> {
+    let re = regex!(r#""(?P<name>[^"]*)""#);
+    let result = re.captures_iter(&line);
+    for c in result {
+        if let Some(name) = c.name("name") {
+            return Some(name.as_str().to_owned())
+        }
+    }
+    None
+}

tests/mactime2/mod.rs

@@ -1,3 +1,4 @@
 mod help;
 mod autocomplete;
-mod is_sorted;
+mod is_sorted;
+mod is_stable_sorting;