1 files changed, 74 insertions, 0 deletions
diff --git a/stpnmove.c b/stpnmove.c
index 4f07cef..f96499e 100644
--- a/stpnmove.c
+++ b/stpnmove.c
@@ -12,6 +12,80 @@ extern inline char *libsimple_stpnmove(char *, const char *, size_t);
 int
 main(void)
 {
+	char buf[1024];
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(&buf[3], buf, SIZE_MAX) == &buf[11 + 3]);
+	assert(!strcmp(buf, "helhello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, &buf[3], SIZE_MAX) == &buf[11 - 3]);
+	assert(!strcmp(buf, "lo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, buf, SIZE_MAX) == &buf[11]);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(&buf[3], buf, 12) == &buf[11 + 3]);
+	assert(!strcmp(buf, "helhello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, &buf[3], 9) == &buf[11 - 3]);
+	assert(!strcmp(buf, "lo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, buf, 12) == &buf[11]);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(&buf[3], buf, 11) == &buf[11 + 3]);
+	assert(!strncmp(buf, "helhello worldx", 15));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, &buf[3], 8) == &buf[8]);
+	assert(!strcmp(buf, "lo worldrld"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, buf, 11) == &buf[11]);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(&buf[3], buf, 2) == &buf[3 + 2]);
+	assert(!strcmp(buf, "helhe world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, &buf[3], 2) == &buf[2]);
+	assert(!strcmp(buf, "lollo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_stpnmove(buf, buf, 2) == &buf[2]);
+	assert(!strcmp(buf, "hello world"));
+
 	return 0;
 }