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/*
* Copyright (c) 2020, Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/NumberFormat.h>
/*
* These tests are mostly meant as a rough sanity-check, to see whether
* human_readable_size() crashes or does something very silly. That, however,
* is a fuzzy human term, so these tests have to hard-code the exact expected
* strings.
*
* Please feel free to tweak human_readable_size()'s behavior, and update the
* "expected" strings below.
*/
TEST_CASE(golden_path)
{
EXPECT_EQ(human_readable_size(0), "0 B");
EXPECT_EQ(human_readable_size(123), "123 B");
EXPECT_EQ(human_readable_size(123 * KiB), "123.0 KiB");
EXPECT_EQ(human_readable_size(123 * MiB), "123.0 MiB");
EXPECT_EQ(human_readable_size(2 * GiB), "2.0 GiB");
}
TEST_CASE(border_B_KiB)
{
EXPECT_EQ(human_readable_size(1000), "1000 B");
EXPECT_EQ(human_readable_size(1023), "1023 B");
// KiB = 1024
EXPECT_EQ(human_readable_size(1024), "1.0 KiB");
EXPECT_EQ(human_readable_size(1025), "1.0 KiB");
}
TEST_CASE(fraction_KiB)
{
EXPECT_EQ(human_readable_size(1050), "1.0 KiB");
EXPECT_EQ(human_readable_size(1075), "1.0 KiB");
// 1024 * 1.05 = 1075.2
EXPECT_EQ(human_readable_size(1076), "1.0 KiB");
EXPECT_EQ(human_readable_size(1100), "1.0 KiB");
EXPECT_EQ(human_readable_size(1126), "1.0 KiB");
// 1024 * 1.1 = 1126.4
EXPECT_EQ(human_readable_size(1127), "1.1 KiB");
EXPECT_EQ(human_readable_size(1146), "1.1 KiB");
}
TEST_CASE(border_KiB_MiB)
{
EXPECT_EQ(human_readable_size(1000 * KiB), "1000.0 KiB");
EXPECT_EQ(human_readable_size(1024 * KiB - 1), "1023.9 KiB");
// MiB
EXPECT_EQ(human_readable_size(1024 * KiB), "1.0 MiB");
EXPECT_EQ(human_readable_size(1024 * KiB + 1), "1.0 MiB");
}
TEST_CASE(fraction_MiB)
{
EXPECT_EQ(human_readable_size(1069547), "1.0 MiB");
EXPECT_EQ(human_readable_size(1101004), "1.0 MiB");
// 1024 * 1024 * 1.05 = 1101004.8
EXPECT_EQ(human_readable_size(1101005), "1.0 MiB");
EXPECT_EQ(human_readable_size(1101006), "1.0 MiB");
EXPECT_EQ(human_readable_size(1120000), "1.0 MiB");
EXPECT_EQ(human_readable_size(1153433), "1.0 MiB");
// 1024 * 1024 * 1.1 = 1153433.6
EXPECT_EQ(human_readable_size(1153434), "1.1 MiB");
}
TEST_CASE(border_MiB_GiB)
{
EXPECT_EQ(human_readable_size(1000 * MiB), "1000.0 MiB");
EXPECT_EQ(human_readable_size(1024 * MiB - 1), "1023.9 MiB");
EXPECT_EQ(human_readable_size(1024 * MiB), "1.0 GiB");
EXPECT_EQ(human_readable_size(1024 * MiB + 1), "1.0 GiB");
}
TEST_CASE(fraction_GiB)
{
EXPECT_EQ(human_readable_size(1095216660), "1.0 GiB");
EXPECT_EQ(human_readable_size(1127428915), "1.0 GiB");
// 1024 * 1024 * 1024 * 1.05 = 1127428915.2
EXPECT_EQ(human_readable_size(1127428916), "1.0 GiB");
EXPECT_EQ(human_readable_size(1127536289), "1.0 GiB");
EXPECT_EQ(human_readable_size(1154272461), "1.0 GiB");
EXPECT_EQ(human_readable_size(1181115968), "1.0 GiB");
EXPECT_EQ(human_readable_size(1181115969), "1.0 GiB");
EXPECT_EQ(human_readable_size(1181116000), "1.0 GiB");
EXPECT_EQ(human_readable_size(1181116006), "1.0 GiB");
// 1024 * 1024 * 1024 * 1.1 = 1181116006.4
EXPECT_EQ(human_readable_size(1181116007), "1.1 GiB");
EXPECT_EQ(human_readable_size(1202590842), "1.1 GiB");
}
TEST_CASE(extremes_4byte)
{
EXPECT_EQ(human_readable_size(0x7fffffff), "1.9 GiB");
EXPECT_EQ(human_readable_size(0x80000000), "2.0 GiB");
EXPECT_EQ(human_readable_size(0xffffffff), "3.9 GiB");
}
TEST_CASE(extremes_8byte)
{
if constexpr (sizeof(size_t) == 8) {
warnln("(Running 8-byte-size_t test)");
EXPECT_EQ(human_readable_size(0x100000000ULL), "4.0 GiB");
EXPECT_EQ(human_readable_size(0x100000001ULL), "4.0 GiB");
EXPECT_EQ(human_readable_size(0x800000000ULL), "32.0 GiB");
EXPECT_EQ(human_readable_size(0x10000000000ULL), "1.0 TiB");
EXPECT_EQ(human_readable_size(0x4000000000000ULL), "1.0 PiB");
EXPECT_EQ(human_readable_size(0x7fffffffffffffffULL), "7.9 EiB");
EXPECT_EQ(human_readable_size(0x8000000000000000ULL), "8.0 EiB");
EXPECT_EQ(human_readable_size(0xffffffffffffffffULL), "15.9 EiB");
} else {
warnln("(Skipping 8-byte-size_t test on 32-bit platform)");
}
}
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