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lib: test-kstrtox: tests for kstrtodec64() and kstrtoudec64()
Add tests for decimal parsing helpers kstrtodec64() and kstrtoudec64(). The test infrastructure is reused from other kstrto*() functions, i.e., the decimal parsers have fixed base of 10, so base field is used as scale input for the helpers. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Rodrigo Alencar
committed by
Jonathan Cameron
Jonathan Cameron
parent
b659b96320
commit
467e641415
@@ -709,6 +709,182 @@ static void __init test_kstrtos8_fail(void)
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TEST_FAIL(kstrtos8, s8, "%hhd", test_s8_fail);
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}
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static void __init test_kstrtoudec64_ok(void)
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{
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DECLARE_TEST_OK(u64, struct test_udec64);
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static DEFINE_TEST_OK(struct test_udec64, test_udec64_ok) = {
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/* basic: integer.fraction, exact digits */
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{"0.0", 1, 0},
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{"1.5", 1, 15},
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{"1.234", 3, 1234},
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{"42.0", 1, 420},
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/* zero */
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{"0.0", 1, 0},
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{"0.000", 3, 0},
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/* integer only */
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{"0", 1, 0},
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{"42", 3, 42000},
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{"123.", 2, 12300},
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{"1", 1, 10},
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/* fractional only (leading dot) */
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{".5", 1, 5},
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{".5", 0, 0},
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{".123", 3, 123},
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{".001", 3, 1},
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/* zero padding: fewer fractional digits than scale */
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{"1.2", 3, 1200},
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{"1.2", 6, 1200000},
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{"0.01", 3, 10},
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{"0.1", 9, 100000000ULL},
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{"0.01", 9, 10000000},
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/* truncation: more fractional digits than scale */
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{"1.23456", 3, 1234},
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{"3.1415926535", 6, 3141592},
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{"0.999999999", 3, 999},
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{"1.99", 1, 19},
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{"1.234", 0, 1},
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/* trailing newline */
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{"1.5\n", 1, 15},
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{"42\n", 3, 42000},
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/* plus sign */
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{"+1.5", 1, 15},
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{"+.5", 1, 5},
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/* scale progression */
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{"1.", 0, 1},
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{"1.0", 1, 10},
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{"1.00", 2, 100},
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{"1.000", 3, 1000},
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{"1.000000", 6, 1000000},
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{"1.000000000", 9, 1000000000ULL},
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/* max limit check */
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{"18446744073.709551615", 9, ULLONG_MAX},
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{"18446744073709.551615", 6, ULLONG_MAX},
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{"0.18446744073709551615", 20, ULLONG_MAX},
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/* scale > 19: representable when integer part is small */
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{"0.00000000000000000001", 20, 1},
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{"0.1", 20, 10000000000000000000ULL},
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{"0.00000000000000000000001", 23, 1},
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/* truncation with scale > 19 */
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{"0.0000000000000000000012345", 23, 123},
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/* truncation with many excess digits */
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{"0.00000000000000000000000000000000423", 34, 42},
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{"1.99999999999999999999999999999999999", 3, 1999},
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};
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TEST_OK(kstrtoudec64, u64, "%llu", test_udec64_ok);
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}
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static void __init test_kstrtoudec64_fail(void)
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{
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static DEFINE_TEST_FAIL(test_udec64_fail) = {
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/* empty / whitespace */
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{"", 3},
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{"\n", 3},
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/* minus sign (unsigned) */
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{"-1.5", 1},
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{"-0.5", 1},
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/* only a decimal point */
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{".", 3},
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{".", 0},
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/* only a sign */
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{"+", 3},
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/* non-digit characters */
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{"abc", 3},
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{"1.2x", 3},
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/* leading/trailing space */
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{" 1.5", 1},
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{"1.5 ", 1},
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/* overflow */
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{"18446744073710.551615", 6},
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{"99999999999999999999", 1},
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/* overflow with scale > 19 */
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{"1.0", 21},
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{"0.2", 20},
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{"0.18446744073709551616", 20},
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{"1", 20},
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};
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TEST_FAIL(kstrtoudec64, u64, "%llu", test_udec64_fail);
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}
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static void __init test_kstrtodec64_ok(void)
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{
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DECLARE_TEST_OK(s64, struct test_dec64);
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static DEFINE_TEST_OK(struct test_dec64, test_dec64_ok) = {
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/* basic positive */
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{"0.0", 1, 0},
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{"1.5", 1, 15},
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{"1.234", 3, 1234},
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/* basic negative */
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{"-1.5", 1, -15},
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{"-1.234", 3, -1234},
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{"-0.5", 1, -5},
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{"-0.001", 3, -1},
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/* zero (signed) */
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{"-0", 1, 0},
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{"-0.0", 1, 0},
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{"0.000", 3, 0},
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/* integer only */
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{"42", 3, 42000},
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{"-42", 3, -42000},
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/* fractional only */
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{".5", 1, 5},
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{"-.5", 1, -5},
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/* zero padding */
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{"1.2", 3, 1200},
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{"-1.2", 3, -1200},
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{"0.01", 3, 10},
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{"-0.01", 3, -10},
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/* truncation */
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{"1.23456", 3, 1234},
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{"-1.23456", 3, -1234},
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{"0.999999999", 3, 999},
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{"-0.999999999", 3, -999},
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/* trailing newline */
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{"1.5\n", 1, 15},
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{"-1.5\n", 1, -15},
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/* plus sign */
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{"+1.5", 1, 15},
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/* limits */
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{"9223372036.854775807", 9, LLONG_MAX},
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{"-9223372036.854775808", 9, LLONG_MIN},
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/* scale > 19 */
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{"0.0", 20, 0},
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{"-0.0", 20, 0},
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{"0.00000000000000000001", 20, 1},
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{"-0.00000000000000000001", 20, -1},
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{"0.009223372036854775807", 21, LLONG_MAX},
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{"-0.009223372036854775808", 21, LLONG_MIN},
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};
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TEST_OK(kstrtodec64, s64, "%lld", test_dec64_ok);
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}
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static void __init test_kstrtodec64_fail(void)
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{
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static DEFINE_TEST_FAIL(test_dec64_fail) = {
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/* empty / whitespace */
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{"", 3},
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{"\n", 3},
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/* no digits after dot */
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{".", 3},
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{"-.", 3},
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/* no digits at all */
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{"+", 3},
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{"-", 3},
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/* non-digit characters */
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{"abc", 3},
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{"-1.2x", 3},
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/* signed overflow */
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{"9223372036.854775808", 9},
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{"-9223372036.854775809", 9},
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{"99999999999999999999", 1},
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/* signed overflow with scale > 19 */
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{"0.1", 20},
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{"-0.1", 20},
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{"0.09223372036854775808", 20},
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{"-0.09223372036854775809", 20},
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};
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TEST_FAIL(kstrtodec64, s64, "%lld", test_dec64_fail);
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}
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static int __init test_kstrtox_init(void)
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{
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test_kstrtoull_ok();
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@@ -735,6 +911,12 @@ static int __init test_kstrtox_init(void)
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test_kstrtou8_fail();
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test_kstrtos8_ok();
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test_kstrtos8_fail();
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test_kstrtoudec64_ok();
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test_kstrtoudec64_fail();
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test_kstrtodec64_ok();
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test_kstrtodec64_fail();
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return -EINVAL;
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}
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module_init(test_kstrtox_init);
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