unit-tests: Check printing of strings having zero length

diff --git a/src/libstrongswan/tests/suites/test_printf.c b/src/libstrongswan/tests/suites/test_printf.c
index ad8c225..7d38c60 100644 (file)
--- a/src/libstrongswan/tests/suites/test_printf.c
+++ b/src/libstrongswan/tests/suites/test_printf.c
@@ -48,6 +48,8 @@ START_TEST(test_printf_strings)
        verify("a bc def", "%s %s %s", "a", "bc", "def");
        verify("asd", "%.3s", "asdfg");
        verify("asdf", "%.*s", (int)4, "asdfg");
+       verify("", "%.0s", NULL);
+       verify("", "%.*s", (int)0, NULL);
        verify("  asdf", "%6s", "asdf");
        verify("  asdf", "%+6s", "asdf");
        verify("asdf  ", "%-6s", "asdf");