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test: test field truncation in snprint()

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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>
This commit is contained in:
Heinrich Schuchardt 2022-01-29 16:33:16 +01:00 • committed by Tom Rini
parent 3970c82a60
commit 73cde90c8b
1 changed files with 12 additions and 0 deletions
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12
test/print_ut.c
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@ -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);