mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-29 06:02:07 +03:00
72ea046b68
`vformat()` can now accept format specifiers of the form
{:'[numeric-type]}. This will output a number with a comma separator
every 3 digits.
For example:
`dbgln("{:'d}", 9999999);` will output 9,999,999.
Binary, octal and hexadecimal numbers can also use this feature, for
example:
`dbgln("{:'x}", 0xffffffff);` will output ff,fff,fff.
382 lines
14 KiB
C++
382 lines
14 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/DeprecatedString.h>
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#include <AK/StringBuilder.h>
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#include <AK/Vector.h>
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#include <math.h>
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#include <unistd.h>
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TEST_CASE(is_integral_works_properly)
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{
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EXPECT(!IsIntegral<char const*>);
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EXPECT(IsIntegral<unsigned long>);
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}
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TEST_CASE(format_string_literals)
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{
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EXPECT_EQ(DeprecatedString::formatted("prefix-{}-suffix", "abc"), "prefix-abc-suffix");
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EXPECT_EQ(DeprecatedString::formatted("{}{}{}", "a", "b", "c"), "abc");
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}
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TEST_CASE(format_integers)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", 42u), "42");
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EXPECT_EQ(DeprecatedString::formatted("{:4}", 42u), " 42");
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EXPECT_EQ(DeprecatedString::formatted("{:08}", 42u), "00000042");
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EXPECT_EQ(DeprecatedString::formatted("{:7}", -17), " -17");
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EXPECT_EQ(DeprecatedString::formatted("{}", -17), "-17");
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EXPECT_EQ(DeprecatedString::formatted("{:04}", 13), "0013");
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EXPECT_EQ(DeprecatedString::formatted("{:08x}", 4096), "00001000");
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EXPECT_EQ(DeprecatedString::formatted("{:x}", 0x1111222233334444ull), "1111222233334444");
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EXPECT_EQ(DeprecatedString::formatted("{:4}", 12345678), "12345678");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", 0), "0");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", 4096), "4,096");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", 16777216), "16,777,216");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", AK::NumericLimits<u64>::max()), "18,446,744,073,709,551,615");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", AK::NumericLimits<u64>::max()), "18,446,744,073,709,551,615");
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EXPECT_EQ(DeprecatedString::formatted("{:'}", AK::NumericLimits<i64>::min() + 1), "-9,223,372,036,854,775,807");
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EXPECT_EQ(DeprecatedString::formatted("{:'x}", 0), "0");
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EXPECT_EQ(DeprecatedString::formatted("{:'x}", 16777216), "1,000,000");
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EXPECT_EQ(DeprecatedString::formatted("{:'x}", AK::NumericLimits<u64>::max()), "f,fff,fff,fff,fff,fff");
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EXPECT_EQ(DeprecatedString::formatted("{:'x}", AK::NumericLimits<i64>::min() + 1), "-7,fff,fff,fff,fff,fff");
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EXPECT_EQ(DeprecatedString::formatted("{:'b}", AK::NumericLimits<u64>::max()), "1,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111");
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}
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TEST_CASE(reorder_format_arguments)
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{
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EXPECT_EQ(DeprecatedString::formatted("{1}{0}", "a", "b"), "ba");
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EXPECT_EQ(DeprecatedString::formatted("{0}{1}", "a", "b"), "ab");
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// Compiletime check bypass: ignoring a passed argument.
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EXPECT_EQ(DeprecatedString::formatted("{0}{0}{0}"sv, "a", "b"), "aaa");
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// Compiletime check bypass: ignoring a passed argument.
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EXPECT_EQ(DeprecatedString::formatted("{1}{}{0}"sv, "a", "b", "c"), "baa");
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}
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TEST_CASE(escape_braces)
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{
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EXPECT_EQ(DeprecatedString::formatted("{{{}", "foo"), "{foo");
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EXPECT_EQ(DeprecatedString::formatted("{}}}", "bar"), "bar}");
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}
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TEST_CASE(everything)
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{
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EXPECT_EQ(DeprecatedString::formatted("{{{:04}/{}/{0:8}/{1}", 42u, "foo"), "{0042/foo/ 42/foo");
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}
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TEST_CASE(string_builder)
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{
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StringBuilder builder;
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builder.appendff(" {} ", 42);
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builder.appendff("{1}{0} ", 1, 2);
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EXPECT_EQ(builder.to_deprecated_string(), " 42 21 ");
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}
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TEST_CASE(format_without_arguments)
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{
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EXPECT_EQ(DeprecatedString::formatted("foo"), "foo");
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}
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TEST_CASE(format_upper_case_integer)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:4X}", 0xff), " FF");
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EXPECT_EQ(DeprecatedString::formatted("{:#4X}", 0xff), "0XFF");
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EXPECT_EQ(DeprecatedString::formatted("{:b}", 0xff), "11111111");
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EXPECT_EQ(DeprecatedString::formatted("{:B}", 0xff), "11111111");
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EXPECT_EQ(DeprecatedString::formatted("{:#b}", 0xff), "0b11111111");
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}
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TEST_CASE(format_aligned)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:*<8}", 13), "13******");
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EXPECT_EQ(DeprecatedString::formatted("{:*^8}", 13), "***13***");
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EXPECT_EQ(DeprecatedString::formatted("{:*>8}", 13), "******13");
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EXPECT_EQ(DeprecatedString::formatted("{:*>+8}", 13), "*****+13");
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EXPECT_EQ(DeprecatedString::formatted("{:*^ 8}", 13), "** 13***");
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}
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TEST_CASE(format_octal)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:o}", 0744), "744");
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EXPECT_EQ(DeprecatedString::formatted("{:#o}", 0744), "0744");
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EXPECT_EQ(DeprecatedString::formatted("{:'o}", 054321), "54,321");
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EXPECT_EQ(DeprecatedString::formatted("{:'o}", 0567012340), "567,012,340");
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}
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TEST_CASE(zero_pad)
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{
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EXPECT_EQ(DeprecatedString::formatted("{: <010}", 42), "42 ");
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EXPECT_EQ(DeprecatedString::formatted("{:010}", 42), "0000000042");
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EXPECT_EQ(DeprecatedString::formatted("{:/^010}", 42), "////42////");
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EXPECT_EQ(DeprecatedString::formatted("{:04x}", -32), "-0020");
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EXPECT_EQ(DeprecatedString::formatted("{:#06x}", -64), "-0x000040");
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}
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TEST_CASE(replacement_field)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:*>{1}}", 13, static_cast<size_t>(10)), "********13");
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EXPECT_EQ(DeprecatedString::formatted("{:*<{1}}", 7, 4), "7***");
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// Compiletime check bypass: intentionally ignoring extra arguments
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EXPECT_EQ(DeprecatedString::formatted("{:{2}}"sv, -5, 8, 16), " -5");
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EXPECT_EQ(DeprecatedString::formatted("{{{:*^{1}}}}", 1, 3), "{*1*}");
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EXPECT_EQ(DeprecatedString::formatted("{:0{}}", 1, 3), "001");
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}
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TEST_CASE(replacement_field_regression)
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{
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// FIXME: Compiletime check bypass: cannot parse '}}' correctly.
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EXPECT_EQ(DeprecatedString::formatted("{:{}}"sv, "", static_cast<unsigned long>(6)), " ");
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}
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TEST_CASE(complex_string_specifiers)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:.8}", "123456789"), "12345678");
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EXPECT_EQ(DeprecatedString::formatted("{:9}", "abcd"), "abcd ");
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EXPECT_EQ(DeprecatedString::formatted("{:>9}", "abcd"), " abcd");
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EXPECT_EQ(DeprecatedString::formatted("{:^9}", "abcd"), " abcd ");
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EXPECT_EQ(DeprecatedString::formatted("{:4.6}", "a"), "a ");
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EXPECT_EQ(DeprecatedString::formatted("{:4.6}", "abcdef"), "abcdef");
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EXPECT_EQ(DeprecatedString::formatted("{:4.6}", "abcdefghi"), "abcdef");
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}
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TEST_CASE(cast_integer_to_character)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:c}", static_cast<int>('a')), "a");
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EXPECT_EQ(DeprecatedString::formatted("{:c}", static_cast<unsigned int>('f')), "f");
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}
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TEST_CASE(boolean_values)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", true), "true");
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EXPECT_EQ(DeprecatedString::formatted("{}", false), "false");
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EXPECT_EQ(DeprecatedString::formatted("{:6}", true), "true ");
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EXPECT_EQ(DeprecatedString::formatted("{:>4}", false), "false");
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EXPECT_EQ(DeprecatedString::formatted("{:d}", false), "0");
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EXPECT_EQ(DeprecatedString::formatted("{:d}", true), "1");
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EXPECT_EQ(DeprecatedString::formatted("{:#08x}", true), "0x00000001");
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}
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TEST_CASE(pointers)
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{
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void* ptr = reinterpret_cast<void*>(0x4000);
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if (sizeof(void*) == 4) {
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EXPECT_EQ(DeprecatedString::formatted("{:p}", 32), "0x00000020");
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EXPECT_EQ(DeprecatedString::formatted("{:p}", ptr), "0x00004000");
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EXPECT_EQ(DeprecatedString::formatted("{}", ptr), "0x00004000");
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} else if (sizeof(void*) == 8) {
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EXPECT_EQ(DeprecatedString::formatted("{:p}", 32), "0x0000000000000020");
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EXPECT_EQ(DeprecatedString::formatted("{:p}", ptr), "0x0000000000004000");
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EXPECT_EQ(DeprecatedString::formatted("{}", ptr), "0x0000000000004000");
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} else {
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VERIFY_NOT_REACHED();
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}
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}
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// If the format implementation did absolutely nothing, all tests would pass. This
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// is because when a test fails we only write "FAIL" to stdout using format.
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//
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// This is a bit scary, thus this test. At least this test should fail in this case.
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TEST_CASE(ensure_that_format_works)
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{
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if (DeprecatedString::formatted("FAIL") != "FAIL") {
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fprintf(stderr, "FAIL\n");
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exit(1);
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}
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if (DeprecatedString::formatted("{} FAIL {}", 1, 2) != "1 FAIL 2") {
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fprintf(stderr, "FAIL\n");
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exit(1);
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}
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}
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TEST_CASE(format_string_literal_as_pointer)
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{
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char const* literal = "abc";
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EXPECT_EQ(DeprecatedString::formatted("{:p}", literal), DeprecatedString::formatted("{:p}", reinterpret_cast<FlatPtr>(literal)));
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}
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TEST_CASE(format_character)
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{
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char a = 'a';
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EXPECT_EQ(DeprecatedString::formatted("{}", true ? a : 'b'), "a");
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}
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struct A {
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};
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struct B {
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};
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template<>
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struct AK::Formatter<B> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, B)
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{
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return Formatter<StringView>::format(builder, "B"sv);
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}
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};
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TEST_CASE(format_if_supported)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", FormatIfSupported { A {} }), "?");
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EXPECT_EQ(DeprecatedString::formatted("{}", FormatIfSupported { B {} }), "B");
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}
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TEST_CASE(file_descriptor)
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{
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char filename[] = "/tmp/test-file-descriptor-XXXXXX";
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int fd = mkstemp(filename);
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FILE* file = fdopen(fd, "w+");
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outln(file, "{}", "Hello, World!");
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out(file, "foo");
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outln(file, "bar");
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rewind(file);
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Array<u8, 256> buffer;
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auto const nread = fread(buffer.data(), 1, buffer.size(), file);
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EXPECT_EQ("Hello, World!\nfoobar\n"sv, StringView { buffer.span().trim(nread) });
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fclose(file);
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unlink(filename);
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}
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TEST_CASE(floating_point_numbers)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", 1.12), "1.12");
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EXPECT_EQ(DeprecatedString::formatted("{}", 1.), "1");
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EXPECT_EQ(DeprecatedString::formatted("{:.3}", 1.12), "1.12");
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EXPECT_EQ(DeprecatedString::formatted("{:.1}", 1.12), "1.1");
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EXPECT_EQ(DeprecatedString::formatted("{}", -1.12), "-1.12");
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EXPECT_EQ(DeprecatedString::formatted("{:'.4}", 1234.5678), "1,234.5678");
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EXPECT_EQ(DeprecatedString::formatted("{:'.4}", -1234.5678), "-1,234.5678");
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EXPECT_EQ(DeprecatedString::formatted("{}", NAN), "nan");
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EXPECT_EQ(DeprecatedString::formatted("{}", INFINITY), "inf");
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EXPECT_EQ(DeprecatedString::formatted("{}", -INFINITY), "-inf");
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// FIXME: There is always the question what we mean with the width field. Do we mean significant digits?
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// Do we mean the whole width? This is what was the simplest to implement:
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EXPECT_EQ(DeprecatedString::formatted("{:x>5.1}", 1.12), "xx1.1");
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}
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TEST_CASE(no_precision_no_trailing_number)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:.0}", 0.1), "0");
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}
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TEST_CASE(yay_this_implementation_sucks)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:.0}", .99999999999), "0");
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}
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TEST_CASE(precision_with_trailing_zeros)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:0.3}", 1.12), "1.120");
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EXPECT_EQ(DeprecatedString::formatted("{:0.1}", 1.12), "1.1");
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}
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TEST_CASE(magnitude_less_than_zero)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", -0.654), "-0.654");
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EXPECT_EQ(DeprecatedString::formatted("{}", 0.654), "0.654");
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}
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TEST_CASE(format_nullptr)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", nullptr), DeprecatedString::formatted("{:p}", static_cast<FlatPtr>(0)));
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}
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struct C {
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int i;
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};
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template<>
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struct AK::Formatter<C> : AK::Formatter<FormatString> {
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ErrorOr<void> format(FormatBuilder& builder, C c)
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{
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return AK::Formatter<FormatString>::format(builder, "C(i={})"sv, c.i);
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}
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};
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TEST_CASE(use_format_string_formatter)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:*<10}", C { 42 }), "C(i=42)***");
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}
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TEST_CASE(long_long_regression)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", 0x0123456789abcdefLL), "81985529216486895");
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StringBuilder builder;
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AK::FormatBuilder fmtbuilder { builder };
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MUST(fmtbuilder.put_i64(0x0123456789abcdefLL));
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EXPECT_EQ(builder.string_view(), "81985529216486895");
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}
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TEST_CASE(hex_dump)
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{
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EXPECT_EQ(DeprecatedString::formatted("{:hex-dump}", "0000"), "30303030");
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EXPECT_EQ(DeprecatedString::formatted("{:>4hex-dump}", "0000"), "30303030 0000");
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EXPECT_EQ(DeprecatedString::formatted("{:>2hex-dump}", "0000"), "3030 00\n3030 00");
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EXPECT_EQ(DeprecatedString::formatted("{:*>4hex-dump}", "0000"), "30303030****0000");
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}
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TEST_CASE(span_format)
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{
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{
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Vector<int> v { 1, 2, 3, 4 };
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EXPECT_EQ(DeprecatedString::formatted("{}", v.span()), "[ 1, 2, 3, 4 ]");
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EXPECT_EQ(DeprecatedString::formatted("{}", const_cast<AddConst<decltype(v)>&>(v).span()), "[ 1, 2, 3, 4 ]");
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}
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{
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Vector<StringView> v { "1"sv, "2"sv, "3"sv, "4"sv };
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EXPECT_EQ(DeprecatedString::formatted("{}", v.span()), "[ 1, 2, 3, 4 ]");
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EXPECT_EQ(DeprecatedString::formatted("{}", const_cast<AddConst<decltype(v)>&>(v).span()), "[ 1, 2, 3, 4 ]");
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}
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{
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Vector<Vector<DeprecatedString>> v { { "1"sv, "2"sv }, { "3"sv, "4"sv } };
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EXPECT_EQ(DeprecatedString::formatted("{}", v.span()), "[ [ 1, 2 ], [ 3, 4 ] ]");
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EXPECT_EQ(DeprecatedString::formatted("{}", const_cast<AddConst<decltype(v)>&>(v).span()), "[ [ 1, 2 ], [ 3, 4 ] ]");
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}
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}
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TEST_CASE(vector_format)
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{
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{
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Vector<int> v { 1, 2, 3, 4 };
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EXPECT_EQ(DeprecatedString::formatted("{}", v), "[ 1, 2, 3, 4 ]");
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}
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{
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Vector<StringView> v { "1"sv, "2"sv, "3"sv, "4"sv };
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EXPECT_EQ(DeprecatedString::formatted("{}", v), "[ 1, 2, 3, 4 ]");
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}
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{
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Vector<Vector<DeprecatedString>> v { { "1"sv, "2"sv }, { "3"sv, "4"sv } };
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EXPECT_EQ(DeprecatedString::formatted("{}", v), "[ [ 1, 2 ], [ 3, 4 ] ]");
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}
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}
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TEST_CASE(format_wchar)
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{
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EXPECT_EQ(DeprecatedString::formatted("{}", L'a'), "a");
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EXPECT_EQ(DeprecatedString::formatted("{}", L'\U0001F41E'), "\xF0\x9F\x90\x9E");
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EXPECT_EQ(DeprecatedString::formatted("{:x}", L'a'), "61");
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EXPECT_EQ(DeprecatedString::formatted("{:x}", L'\U0001F41E'), "1f41e");
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EXPECT_EQ(DeprecatedString::formatted("{:d}", L'a'), "97");
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EXPECT_EQ(DeprecatedString::formatted("{:d}", L'\U0001F41E'), "128030");
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EXPECT_EQ(DeprecatedString::formatted("{:6}", L'a'), "a ");
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EXPECT_EQ(DeprecatedString::formatted("{:6d}", L'a'), " 97");
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EXPECT_EQ(DeprecatedString::formatted("{:#x}", L'\U0001F41E'), "0x1f41e");
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}
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