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test: test field truncation in snprint()

The output size for snprint() should not only be respected for whole fields
but also with fields. Add more tests.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Heinrich Schuchardt před 2 roky
rodič
revize
73cde90c8b
1 změnil soubory, kde provedl 12 přidání a 0 odebrání
  1. 12 0
      test/print_ut.c

+ 12 - 0
test/print_ut.c

@@ -370,6 +370,18 @@ static int snprint(struct unit_test_state *uts)
 	char buf[10] = "xxxxxxxxx";
 	int ret;
 
+	ret = snprintf(buf, 5, "%d", 12345678);
+	ut_asserteq_str("1234", buf);
+	ut_asserteq(8, ret);
+	ret = snprintf(buf, 5, "0x%x", 0x1234);
+	ut_asserteq_str("0x12", buf);
+	ut_asserteq(6, ret);
+	ret = snprintf(buf, 5, "0x%08x", 0x1234);
+	ut_asserteq_str("0x00", buf);
+	ut_asserteq(10, ret);
+	ret = snprintf(buf, 3, "%s", "abc");
+	ut_asserteq_str("ab", buf);
+	ut_asserteq(3, ret);
 	ret = snprintf(buf, 4, "%s:%s", "abc", "def");
 	ut_asserteq(0, buf[3]);
 	ut_asserteq(7, ret);