Add a program to test the functionality of hsearch(). Our current

hsearch() falls right over (because it's unredeemably broken).  That's
about to change, though.

regress/lib/libc/Makefile

@@ -1,6 +1,6 @@
-#	$NetBSD: Makefile,v 1.16 2001/01/08 04:41:31 simonb Exp $
+#	$NetBSD: Makefile,v 1.17 2001/02/14 05:20:10 cgd Exp $
 
-SUBDIR+= _setjmp db div gen md5sha popen regex setjmp sigsetjmp time
+SUBDIR+= _setjmp db div gen hsearch md5sha popen regex setjmp sigsetjmp time
 .if (${MACHINE_ARCH} != "arm32" && ${MACHINE_ARCH} != "vax")
 SUBDIR+= ieeefp
 .endif

regress/lib/libc/hsearch/Makefile

@@ -0,0 +1,10 @@
+#	$NetBSD: Makefile,v 1.1 2001/02/14 05:20:10 cgd Exp $
+
+PROG=	hsearchtest
+SRCS=	hsearchtest.c
+NOMAN=	noman, no way, man
+
+regress: ${PROG}
+	./${PROG}
+
+.include <bsd.prog.mk>

regress/lib/libc/hsearch/hsearchtest.c

@@ -0,0 +1,112 @@
+/* $NetBSD: hsearchtest.c,v 1.1 2001/02/14 05:20:11 cgd Exp $ */
+
+/*
+ * Copyright (c) 2001 Christopher G. Demetriou
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *          This product includes software developed for the
+ *          NetBSD Project.  See http://www.netbsd.org/ for
+ *          information about NetBSD.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
+ */
+
+/*
+ * Test program for hsearch() et al.
+ */
+
+#include <search.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#define	TEST(e)	((e) ? (void)0 : testfail(__FILE__, __LINE__, #e))
+
+static void
+testfail(const char *file, unsigned long line, const char *expression)
+{
+
+	fprintf(stderr, "TEST FAILED: %s: file %s, line %ld\n",
+	    expression, file, line);
+	exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	ENTRY e, *ep, *ep2;
+	int created_ok;
+	char ch[2];
+	int i;
+
+	created_ok = hcreate(16);
+	TEST(created_ok);
+
+	/* ch[1] should be constant from here on down. */
+	ch[1] = '\0';
+	
+	/* Basic insertions.  Check enough that there'll be collisions. */
+	for (i = 0; i < 26; i++) {
+		ch[0] = 'a' + i;
+		e.key = strdup(ch);	/* ptr to provided key is kept! */
+		TEST(e.key != NULL);
+		e.data = (void *)(long)i;
+		ep = hsearch(e, ENTER);
+		TEST(ep != NULL);
+		TEST(strcmp(ep->key, ch) == 0);
+		TEST((long)ep->data == i);
+	}
+
+	/* e.key should be constant from here on down. */
+	e.key = ch;
+
+	/* Check duplicate entry.  Should _not_ overwrite existing data.  */
+	ch[0] = 'a';
+	e.data = (void *)(long)12345;
+	ep = hsearch(e, FIND);
+	TEST(ep != NULL);
+	TEST(strcmp(ep->key, ch) == 0);
+	TEST((long)ep->data == 0);
+
+	/* Check for something that's not there. */
+	ch[0] = 'A';
+	ep = hsearch(e, FIND);
+	TEST(ep == NULL);
+
+	/* Check two at once. */
+	ch[0] = 'a';
+	ep = hsearch(e, FIND);
+	ch[0] = 'b';
+	ep2 = hsearch(e, FIND);
+	TEST(ep != NULL);
+	TEST(strcmp(ep->key, "a") == 0 && (long)ep->data == 0);
+	TEST(ep2 != NULL);
+	TEST(strcmp(ep2->key, "b") == 0 && (long)ep2->data == 1);
+
+	hdestroy();
+
+	exit(0);
+}