Merge pull request #2148 from jhscheer/pinky2clap

pinky: move from getopts to clap (#2123)

tests/by-util/test_pinky.rs

@@ -34,6 +34,36 @@ fn test_long_format() {
     ));
 }
 
+#[cfg(target_os = "linux")]
+#[test]
+fn test_long_format_multiple_users() {
+    let scene = TestScenario::new(util_name!());
+
+    let expected = scene
+        .cmd_keepenv(util_name!())
+        .env("LANGUAGE", "C")
+        .arg("-l")
+        .arg("root")
+        .arg("root")
+        .arg("root")
+        .succeeds();
+
+    scene
+        .ucmd()
+        .arg("-l")
+        .arg("root")
+        .arg("root")
+        .arg("root")
+        .succeeds()
+        .stdout_is(expected.stdout_str());
+}
+
+#[test]
+fn test_long_format_wo_user() {
+    // "no username specified; at least one must be specified when using -l"
+    new_ucmd!().arg("-l").fails().code_is(1);
+}
+
 #[cfg(target_os = "linux")]
 #[test]
 fn test_short_format_i() {