From: Jan Janssen <medhefgo@web.de>
Date: Fri, 5 Nov 2021 11:53:09 +0000 (+0100)
Subject: test: Add test for flag macros
X-Git-Tag: v250-rc1~351
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d874a13efc51fe49c8870542fa1c9a64ca7e5e93;p=thirdparty%2Fsystemd.git

test: Add test for flag macros
---

diff --git a/src/test/test-macro.c b/src/test/test-macro.c
index 495221c1d5d..6db06d80c60 100644
--- a/src/test/test-macro.c
+++ b/src/test/test-macro.c
@@ -336,6 +336,75 @@ static void test_align_to(void) {
         assert_cc(__builtin_types_compatible_p(typeof(CONST_ALIGN_TO(SIZE_MAX, 512)), void));
 }
 
+static void test_flags(void) {
+        enum {
+                F1 = 1 << 0,
+                F2 = 1 << 1,
+                F3 = 1 << 2,
+                F_ALL = F1 | F2 | F3
+        };
+        unsigned n, f;
+
+        log_info("/* %s */", __func__);
+
+        assert_se(FLAGS_SET(0, 0));
+        assert_se(FLAGS_SET(F1, F1));
+        assert_se(FLAGS_SET(F1 | F2, F1));
+        assert_se(FLAGS_SET(F1 | F3, F1 | F3));
+        assert_se(FLAGS_SET(F1 | F2 | F3, F_ALL));
+        assert_se(!FLAGS_SET(0, F1));
+        assert_se(!FLAGS_SET(F2, F1));
+        assert_se(!FLAGS_SET(F1 | F2, F3));
+        assert_se(!FLAGS_SET(F1 | F2, F1 | F3));
+        assert_se(!FLAGS_SET(F1 | F2 | F3, ~F_ALL));
+
+        // Check for no double eval.
+        n = F2;
+        f = F1;
+        assert_se(!FLAGS_SET(--n, ++f));
+        assert_se(n == F1);
+        assert_se(f == F2);
+
+        SET_FLAG(n, F3, true);
+        assert_se(n == (F1 | F3));
+        SET_FLAG(n, F2, false);
+        assert_se(n == (F1 | F3));
+        SET_FLAG(n, F3, false);
+        assert_se(n == F1);
+        SET_FLAG(n, F1, true);
+        assert_se(n == F1);
+        SET_FLAG(n, F1 | F3, true);
+        assert_se(n == (F1 | F3));
+        SET_FLAG(n, F_ALL, false);
+        assert_se(n == 0);
+
+        assert_se(UPDATE_FLAG(0, 0, true) == 0);
+        assert_se(UPDATE_FLAG(0, F1, true) == F1);
+        assert_se(UPDATE_FLAG(0, F1 | F2, true) == (F1 | F2));
+        assert_se(UPDATE_FLAG(F1, 0, true) == F1);
+        assert_se(UPDATE_FLAG(F1, F1, true) == F1);
+        assert_se(UPDATE_FLAG(F1, F3, true) == (F1 | F3));
+        assert_se(UPDATE_FLAG(F1, F1 | F3, true) == (F1 | F3));
+        assert_se(UPDATE_FLAG(F1, F_ALL, true) == F_ALL);
+        assert_se(UPDATE_FLAG(0, 0, false) == 0);
+        assert_se(UPDATE_FLAG(0, F1, false) == 0);
+        assert_se(UPDATE_FLAG(0, F1 | F2, false) == 0);
+        assert_se(UPDATE_FLAG(F1, 0, false) == F1);
+        assert_se(UPDATE_FLAG(F1, F1, false) == 0);
+        assert_se(UPDATE_FLAG(F1, F3, false) == F1);
+        assert_se(UPDATE_FLAG(F1, F1 | F3, false) == 0);
+        assert_se(UPDATE_FLAG(F1, F2 | F3, false) == F1);
+        assert_se(UPDATE_FLAG(F1, F_ALL, false) == 0);
+        assert_se(UPDATE_FLAG(F_ALL, F_ALL, false) == 0);
+
+        // Check for no double eval.
+        n = F2;
+        f = F1;
+        assert_se(UPDATE_FLAG(--n, ++f, true) == (F1 | F2));
+        assert_se(n == F1);
+        assert_se(f == F2);
+}
+
 int main(int argc, char *argv[]) {
         test_setup_logging(LOG_INFO);
 
@@ -347,6 +416,7 @@ int main(int argc, char *argv[]) {
         test_foreach_pointer();
         test_ptr_to_int();
         test_align_to();
+        test_flags();
 
         return 0;
 }