/* * Copyright (c) 2020, Ben Wiederhake * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include /* * 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"); } template void actual_extremes_8byte(); template<> void actual_extremes_8byte<4>() { warn() << "(Skipping 8-byte-size_t test)"; } template<> void actual_extremes_8byte<8>() { warn() << "(Running true 8-byte-size_t test)"; // Your editor might show "implicit conversion" warnings here. // This is because your editor thinks the world is 32-bit, but it isn't. 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), "1024.0 GiB"); // Oh yeah! These are *correct*! EXPECT_EQ(human_readable_size(0x7fffffffffffffffULL), "8589934591.9 GiB"); EXPECT_EQ(human_readable_size(0x8000000000000000ULL), "8589934592.0 GiB"); EXPECT_EQ(human_readable_size(0xffffffffffffffffULL), "17179869183.9 GiB"); } TEST_CASE(extremes_8byte) { actual_extremes_8byte(); } TEST_MAIN(NumberFormat)