52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
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// SPDX-FileCopyrightText: 2024 Jorrit Rouwe
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// SPDX-License-Identifier: MIT
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#include "UnitTestFramework.h"
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#include <Jolt/Core/HashCombine.h>
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TEST_SUITE("HashCombineTest")
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{
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TEST_CASE("TestHashBytes")
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{
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CHECK(HashBytes("This is a test", 14) == 2733878766136413408UL);
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}
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TEST_CASE("TestHashString")
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{
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CHECK(HashString("This is a test") == 2733878766136413408UL);
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}
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TEST_CASE("TestHashStruct")
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{
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const char *char_test = "This is a test";
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CHECK(Hash<const char *> { } (char_test) == 2733878766136413408UL);
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std::string_view str_view_test = "This is a test";
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CHECK(Hash<std::string_view> { } (str_view_test) == 2733878766136413408UL);
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String str_test = "This is a test";
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CHECK(Hash<String> { } (str_test) == 2733878766136413408UL);
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}
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TEST_CASE("TestHashCombine")
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{
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int val1 = 0;
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uint64 val1_hash = Hash<int> { } (val1);
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int val2 = 1;
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uint64 val2_hash = Hash<int> { } (val2);
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// Check non-commutative
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uint64 seed1 = val1_hash;
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HashCombine(seed1, val2);
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uint64 seed2 = val2_hash;
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HashCombine(seed2, val1);
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CHECK(seed1 != seed2);
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// Check that adding a 0 changes the hash
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uint64 seed3 = val1_hash;
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HashCombine(seed3, val1);
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CHECK(seed3 != val1_hash);
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}
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}
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