pkill: add unit tests

tests/by-util/test_pkill.rs

@@ -0,0 +1,50 @@
+// This file is part of the uutils procps package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
+use crate::common::util::TestScenario;
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_no_args() {
+    new_ucmd!()
+        .fails()
+        .code_is(2)
+        .no_stdout()
+        .stderr_contains("no matching criteria specified");
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_non_matching_pattern() {
+    new_ucmd!()
+        .arg("THIS_PATTERN_DOES_NOT_MATCH")
+        .fails()
+        .code_is(1)
+        .no_output();
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_too_many_patterns() {
+    new_ucmd!()
+        .arg("sh")
+        .arg("sh")
+        .fails()
+        .code_is(2)
+        .no_stdout()
+        .stderr_contains("only one pattern can be provided");
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_invalid_arg() {
+    new_ucmd!().arg("--definitely-invalid").fails().code_is(1);
+}
+
+#[cfg(target_os = "linux")]
+#[test]
+fn test_help() {
+    new_ucmd!().arg("--help").succeeds();
+}

tests/tests.rs

@@ -52,3 +52,7 @@ mod test_top;
 #[cfg(feature = "snice")]
 #[path = "by-util/test_snice.rs"]
 mod test_snice;
+
+#[cfg(feature = "pkill")]
+#[path = "by-util/test_pkill.rs"]
+mod test_pkill;