1 files changed, 20 insertions, 0 deletions
diff --git a/strmove.c b/strmove.c
index bd1f89f..bdf3803 100644
--- a/strmove.c
+++ b/strmove.c
@@ -12,6 +12,26 @@ extern inline char *libsimple_strmove(char *, const char *);
 int
 main(void)
 {
+	char buf[1024];
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strmove(&buf[3], buf) == &buf[3]);
+	assert(!strcmp(buf, "helhello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strmove(buf, &buf[3]) == buf);
+	assert(!strcmp(buf, "lo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strmove(buf, buf) == buf);
+	assert(!strcmp(buf, "hello world"));
+
 	return 0;
 }