1 files changed, 95 insertions, 0 deletions
diff --git a/tests/libntp/sbprintf.c b/tests/libntp/sbprintf.c
new file mode 100644
index 000000000000..c3672743e6ce
--- /dev/null
+++ b/tests/libntp/sbprintf.c
@@ -0,0 +1,95 @@
+#include "config.h"
+#include "ntp_stdlib.h"
+#include "unity.h"
+
+#include <errno.h>
+
+extern void test_NullBuf1(void);
+void test_NullBuf1(void)
+{
+	int rc = xsbprintf(NULL, NULL, "blah");
+        TEST_ASSERT(rc == -1 && errno == EINVAL);
+}
+
+extern void test_NullBuf2(void);
+void test_NullBuf2(void)
+{
+	char *bp = NULL;
+	int   rc = xsbprintf(&bp, NULL, "blah");
+        TEST_ASSERT(rc == -1 && errno == EINVAL);
+	TEST_ASSERT_EQUAL_PTR(bp, NULL);
+}
+
+extern void test_EndBeyond(void);
+void test_EndBeyond(void)
+{
+	char ba[2];
+	char *bp = ba + 1;
+	char *ep = ba;
+	int rc = xsbprintf(&bp, ep, "blah");
+        TEST_ASSERT(rc == -1 && errno == EINVAL);
+}
+
+extern void test_SmallBuf(void);
+void test_SmallBuf(void)
+{
+	char  ba[4];
+	char *bp = ba;
+	char *ep = ba + sizeof(ba);
+	int   rc = xsbprintf(&bp, ep, "1234");
+        TEST_ASSERT(rc == 0 && strlen(ba) == 0);
+	TEST_ASSERT_EQUAL_PTR(bp, ba);
+}
+
+extern void test_MatchBuf(void);
+void test_MatchBuf(void)
+{
+	char  ba[5];
+	char *bp = ba;
+	char *ep = ba + sizeof(ba);
+	int   rc = xsbprintf(&bp, ep, "1234");
+        TEST_ASSERT(rc == 4 && strlen(ba) == 4);
+	TEST_ASSERT_EQUAL_PTR(bp, ba + 4);
+}
+
+extern void test_BigBuf(void);
+void test_BigBuf(void)
+{
+	char  ba[10];
+	char *bp = ba;
+	char *ep = ba + sizeof(ba);
+	int   rc = xsbprintf(&bp, ep, "1234");
+        TEST_ASSERT(rc == 4 && strlen(ba) == 4);
+	TEST_ASSERT_EQUAL_PTR(bp, ba + 4);
+}
+
+extern void test_SimpleArgs(void);
+void test_SimpleArgs(void)
+{
+	char  ba[10];
+	char *bp = ba;
+	char *ep = ba + sizeof(ba);
+	int   rc = xsbprintf(&bp, ep, "%d%d%d%d", 1, 2, 3, 4);
+        TEST_ASSERT(rc == 4 && strlen(ba) == 4);
+	TEST_ASSERT_EQUAL_PTR(bp, ba + 4);
+	TEST_ASSERT_FALSE(strcmp(ba, "1234"));
+}
+
+extern void test_Increment1(void);
+void test_Increment1(void)
+{
+	char  ba[10];
+	char *bp = ba;
+	char *ep = ba + sizeof(ba);
+	int   rc;
+
+	rc = xsbprintf(&bp, ep, "%d%d%d%d", 1, 2, 3, 4);
+        TEST_ASSERT(rc == 4 && strlen(ba) == 4);
+	TEST_ASSERT_EQUAL_PTR(bp, ba + 4);
+
+	rc = xsbprintf(&bp, ep, "%s", "frob");
+        TEST_ASSERT(rc == 4 && strlen(ba) == 8);
+	TEST_ASSERT_EQUAL_PTR(bp, ba + 8);
+	TEST_ASSERT_FALSE(strcmp(ba, "1234frob"));
+}
+