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-rw-r--r--src/test/test-util.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/test-util.c b/src/test/test-util.c
index 7d81b0b7be..a8fa48aed2 100644
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -70,6 +70,28 @@ static void test_align_power2(void) {
}
}
+static void test_max(void) {
+ static const struct {
+ int a;
+ int b[CONST_MAX(10, 100)];
+ } val1 = {
+ .a = CONST_MAX(10, 100),
+ };
+ int d = 0;
+
+ assert_cc(sizeof(val1.b) == sizeof(int) * 100);
+
+ /* CONST_MAX returns (void) instead of a value if the passed arguments
+ * are not of the same type or not constant expressions. */
+ assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 10)), int));
+ assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(d, 10)), void));
+ assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 1U)), void));
+
+ assert_se(val1.a == 100);
+ assert_se(MAX(++d, 0) == 1);
+ assert_se(d == 1);
+}
+
static void test_first_word(void) {
assert_se(first_word("Hello", ""));
assert_se(first_word("Hello", "Hello"));
@@ -927,6 +949,7 @@ int main(int argc, char *argv[]) {
test_streq_ptr();
test_align_power2();
+ test_max();
test_first_word();
test_close_many();
test_parse_boolean();