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Diffstat (limited to 'tests/test_string.h')
| -rw-r--r-- | tests/test_string.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/test_string.h b/tests/test_string.h index 1982d8de60..79fdb7bb56 100644 --- a/tests/test_string.h +++ b/tests/test_string.h @@ -350,6 +350,9 @@ TEST_CASE("[String] Insertion") { } TEST_CASE("[String] Number to string") { + CHECK(String::num(0) == "0"); + CHECK(String::num(0.0) == "0"); // No trailing zeros. + CHECK(String::num(-0.0) == "-0"); // Includes sign even for zero. CHECK(String::num(3.141593) == "3.141593"); CHECK(String::num(3.141593, 3) == "3.142"); CHECK(String::num_real(3.141593) == "3.141593"); @@ -357,6 +360,27 @@ TEST_CASE("[String] Number to string") { CHECK(String::num_int64(3141593) == "3141593"); CHECK(String::num_int64(0xA141593, 16) == "a141593"); CHECK(String::num_int64(0xA141593, 16, true) == "A141593"); + CHECK(String::num(42.100023, 4) == "42.1"); // No trailing zeros. + + // Checks doubles with many decimal places. + CHECK(String::num(0.0000012345432123454321, -1) == "0.00000123454321"); // -1 uses 14 as sane default. + CHECK(String::num(0.0000012345432123454321) == "0.00000123454321"); // -1 is the default value. + CHECK(String::num(-0.0000012345432123454321) == "-0.00000123454321"); + CHECK(String::num(-10000.0000012345432123454321) == "-10000.0000012345"); + CHECK(String::num(0.0000000000012345432123454321) == "0.00000000000123"); + CHECK(String::num(0.0000000000012345432123454321, 3) == "0"); + + // Note: When relevant (remainder > 0.5), the last digit gets rounded up, + // which can also lead to not include a trailing zero, e.g. "...89" -> "...9". + CHECK(String::num(0.0000056789876567898765) == "0.00000567898766"); // Should round last digit. + CHECK(String::num(10000.000005678999999999) == "10000.000005679"); // We cut at ...789|99 which is rounded to ...79, so only 13 decimals. + CHECK(String::num(42.12999999, 6) == "42.13"); // Also happens with lower decimals count. + + // 32 is MAX_DECIMALS. We can't reliably store that many so we can't compare against a string, + // but we can check that the string length is 34 (32 + 2 for "0."). + CHECK(String::num(0.00000123456789987654321123456789987654321, 32).length() == 34); + CHECK(String::num(0.00000123456789987654321123456789987654321, 42).length() == 34); // Should enforce MAX_DECIMALS. + CHECK(String::num(10000.00000123456789987654321123456789987654321, 42).length() == 38); // 32 decimals + "10000.". } TEST_CASE("[String] String to integer") { |