who: add tests

Makefile

@@ -196,7 +196,8 @@ TEST_PROGS  := \
 	unexpand \
 	uniq \
 	unlink \
-	wc
+	wc \
+	who
 
 TESTS       := \
 	$(sort $(filter $(UTILS),$(filter-out $(SKIP_UTILS),$(TEST_PROGS))))

tests/test_who.rs

@@ -0,0 +1,88 @@
+use common::util::*;
+
+static UTIL_NAME: &'static str = "who";
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_count() {
+    for opt in ["-q", "--count"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_boot() {
+    for opt in ["-b", "--boot"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_heading() {
+    for opt in ["-H"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_short() {
+    for opt in ["-s", "--short"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_login() {
+    for opt in ["-l", "--login"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_m() {
+    for opt in ["-m"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_dead() {
+    for opt in ["-d", "--dead"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_all() {
+    for opt in ["-a", "--all"].into_iter() {
+        let scene = TestScenario::new(UTIL_NAME);
+        let args = [*opt];
+        scene.ucmd().args(&args).run().stdout_is(expected_result(&args));
+    }
+}
+
+#[cfg(target_os = "linux")]
+fn expected_result(args: &[&str]) -> String {
+    TestScenario::new(UTIL_NAME).cmd_keepenv(UTIL_NAME).args(args).run().stdout
+}

tests/tests.rs

@@ -21,6 +21,7 @@ unix_only! {
     "stdbuf", test_stdbuf;
     "touch", test_touch;
     "unlink", test_unlink;
+    "who", test_who;
     // Be aware of the trailing semicolon after the last item
     "stat", test_stat
 }