* Added some calls to waitpid() which should result in the same error code.

* Fixed comment, as Haiku now behaves properly at least for most cases :-)
* Style guide update.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20007 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/system/kernel/wait_test.c

@@ -1,19 +1,36 @@
 /*
-*  Copyright 2007, Jérôme Duval. All rights reserved.
+ * Copyright 2007, Jérôme Duval. All rights reserved.
-*  Distributed under the terms of the MIT License.
+ * Distributed under the terms of the MIT License.
-*  
-*/
-#include <sys/wait.h>
-#include <stdio.h>
-
-/**
- * wait() doesn't return on Haiku, whereas it should return an error when the
- * process has no children.
  */
 
-int main() {
+
-	int child_status;
+#include <errno.h>
-	pid_t pid = wait(&child_status);
+#include <stdio.h>
-	printf("wait returned %ld\n", pid);
+#include <string.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+
+/*!
+	wait()/waitpid() should return -1 and set errno to ECHILD, since there
+	are no children to wait for.
+*/
+int
+main()
+{
+	int childStatus;
+	pid_t pid = wait(&childStatus);
+	printf("wait() returned %ld (%s)\n", pid, strerror(errno));
+
+	pid = waitpid(-1, &childStatus, 0);
+	printf("waitpid(-1, ...) returned %ld (%s)\n", pid, strerror(errno));
+
+	pid = waitpid(0, &childStatus, 0);
+	printf("waitpid(0, ...) returned %ld (%s)\n", pid, strerror(errno));
+
+	pid = waitpid(getpgrp(), &childStatus, 0);
+	printf("waitpid(%ld, ...) returned %ld (%s)\n", getpgrp(), pid, strerror(errno));
+
+	return 0;
 }