mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 02:58:12 +00:00
620b73b3d5
I ran into this exact but at least twenty times in Serenity alone. The C++ Standard dictates that 'unsigned long' and 'unsigned long long' are distinct types even though on most platforms they are usually both 64 bit integers. Also it wasn't possible to evaluate IsIntegral<T> for types that were not integers since it used MakeUnsigned<T> internally.
272 lines
8.7 KiB
C++
272 lines
8.7 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/TestSuite.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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TEST_CASE(is_integral_works_properly)
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{
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EXPECT(!IsIntegral<const char*>::value);
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EXPECT(IsIntegral<unsigned long>::value);
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}
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TEST_CASE(format_string_literals)
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{
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EXPECT_EQ(String::formatted("prefix-{}-suffix", "abc"), "prefix-abc-suffix");
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EXPECT_EQ(String::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(String::formatted("{}", 42u), "42");
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EXPECT_EQ(String::formatted("{:4}", 42u), " 42");
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EXPECT_EQ(String::formatted("{:08}", 42u), "00000042");
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EXPECT_EQ(String::formatted("{:7}", -17), " -17");
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EXPECT_EQ(String::formatted("{}", -17), "-17");
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EXPECT_EQ(String::formatted("{:04}", 13), "0013");
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EXPECT_EQ(String::formatted("{:08x}", 4096), "00001000");
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EXPECT_EQ(String::formatted("{:x}", 0x1111222233334444ull), "1111222233334444");
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EXPECT_EQ(String::formatted("{:4}", 12345678), "12345678");
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}
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TEST_CASE(reorder_format_arguments)
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{
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EXPECT_EQ(String::formatted("{1}{0}", "a", "b"), "ba");
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EXPECT_EQ(String::formatted("{0}{1}", "a", "b"), "ab");
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EXPECT_EQ(String::formatted("{0}{0}{0}", "a", "b"), "aaa");
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EXPECT_EQ(String::formatted("{1}{}{0}", "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(String::formatted("{{{}", "foo"), "{foo");
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EXPECT_EQ(String::formatted("{}}}", "bar"), "bar}");
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}
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TEST_CASE(everything)
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{
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EXPECT_EQ(String::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_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(String::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(String::formatted("{:4X}", 0xff), " FF");
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EXPECT_EQ(String::formatted("{:#4X}", 0xff), "0XFF");
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EXPECT_EQ(String::formatted("{:b}", 0xff), "11111111");
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EXPECT_EQ(String::formatted("{:B}", 0xff), "11111111");
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EXPECT_EQ(String::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(String::formatted("{:*<8}", 13), "13******");
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EXPECT_EQ(String::formatted("{:*^8}", 13), "***13***");
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EXPECT_EQ(String::formatted("{:*>8}", 13), "******13");
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EXPECT_EQ(String::formatted("{:*>+8}", 13), "*****+13");
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EXPECT_EQ(String::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(String::formatted("{:o}", 0744), "744");
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EXPECT_EQ(String::formatted("{:#o}", 0744), "0744");
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}
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TEST_CASE(zero_pad)
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{
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EXPECT_EQ(String::formatted("{: <010}", 42), "42 ");
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EXPECT_EQ(String::formatted("{:010}", 42), "0000000042");
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EXPECT_EQ(String::formatted("{:/^010}", 42), "////42////");
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EXPECT_EQ(String::formatted("{:04x}", -32), "-0020");
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EXPECT_EQ(String::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(String::formatted("{:*>{1}}", 13, static_cast<size_t>(10)), "********13");
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EXPECT_EQ(String::formatted("{:*<{1}}", 7, 4), "7***");
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EXPECT_EQ(String::formatted("{:{2}}", -5, 8, 16), " -5");
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EXPECT_EQ(String::formatted("{{{:*^{1}}}}", 1, 3), "{*1*}");
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EXPECT_EQ(String::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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EXPECT_EQ(String::formatted("{:{}}", "", 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(String::formatted("{:.8}", "123456789"), "12345678");
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EXPECT_EQ(String::formatted("{:9}", "abcd"), "abcd ");
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EXPECT_EQ(String::formatted("{:>9}", "abcd"), " abcd");
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EXPECT_EQ(String::formatted("{:^9}", "abcd"), " abcd ");
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}
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TEST_CASE(cast_integer_to_character)
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{
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EXPECT_EQ(String::formatted("{:c}", static_cast<int>('a')), "a");
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EXPECT_EQ(String::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(String::formatted("{}", true), "true");
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EXPECT_EQ(String::formatted("{}", false), "false");
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EXPECT_EQ(String::formatted("{:6}", true), "true ");
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EXPECT_EQ(String::formatted("{:>4}", false), "false");
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EXPECT_EQ(String::formatted("{:d}", false), "0");
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EXPECT_EQ(String::formatted("{:d}", true), "1");
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EXPECT_EQ(String::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(String::formatted("{:p}", 32), "0x00000020");
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EXPECT_EQ(String::formatted("{:p}", ptr), "0x00004000");
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EXPECT_EQ(String::formatted("{}", ptr), "0x00004000");
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} else if (sizeof(void*) == 8) {
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EXPECT_EQ(String::formatted("{:p}", 32), "0x0000000000000020");
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EXPECT_EQ(String::formatted("{:p}", ptr), "0x0000000000004000");
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EXPECT_EQ(String::formatted("{}", ptr), "0x0000000000004000");
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} else {
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ASSERT_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 (String::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 (String::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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const char* literal = "abc";
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EXPECT_EQ(String::formatted("{:p}", literal), String::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(String::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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void format(TypeErasedFormatParams& params, FormatBuilder& builder, B)
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{
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Formatter<StringView>::format(params, builder, "B");
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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(String::formatted("{}", FormatIfSupported { A {} }), "?");
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EXPECT_EQ(String::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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const auto nread = fread(buffer.data(), 1, buffer.size(), file);
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EXPECT_EQ(StringView { "Hello, World!\nfoobar\n" }, StringView { buffer.span().trim(nread) });
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fclose(file);
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}
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TEST_CASE(floating_point_numbers)
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{
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EXPECT_EQ(String::formatted("{}", 1.12), "1.120000");
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EXPECT_EQ(String::formatted("{}", 1.), "1.000000");
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EXPECT_EQ(String::formatted("{:.3}", 1.12), "1.120");
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EXPECT_EQ(String::formatted("{:.1}", 1.12), "1.1");
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EXPECT_EQ(String::formatted("{}", -1.12), "-1.120000");
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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(String::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(String::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(String::formatted("{:.0}", .99999999999), "0.");
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}
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TEST_MAIN(Format)
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