e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "testing/testing.h"
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#include "BLI_hash_mm2a.h"
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/* NOTE: Reference results are taken from reference implementation
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* (cpp code, CMurmurHash2A variant):
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* https://smhasher.googlecode.com/svn-history/r130/trunk/MurmurHash2.cpp
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*/
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TEST(hash_mm2a, MM2ABasic)
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{
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BLI_HashMurmur2A mm2;
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const char *data = "Blender";
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BLI_hash_mm2a_init(&mm2, 0);
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BLI_hash_mm2a_add(&mm2, (const uchar *)data, strlen(data));
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#ifdef __LITTLE_ENDIAN__
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EXPECT_EQ(BLI_hash_mm2a_end(&mm2), 1633988145);
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#else
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EXPECT_EQ(BLI_hash_mm2a_end(&mm2), 959283772);
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#endif
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}
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TEST(hash_mm2a, MM2AConcatenateStrings)
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{
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BLI_HashMurmur2A mm2;
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uint32_t hash;
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const char *data1 = "Blender";
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const char *data2 = " is ";
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const char *data3 = "FaNtAsTiC";
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const char *data123 = "Blender is FaNtAsTiC";
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BLI_hash_mm2a_init(&mm2, 0);
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BLI_hash_mm2a_add(&mm2, (const uchar *)data1, strlen(data1));
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BLI_hash_mm2a_add(&mm2, (const uchar *)data2, strlen(data2));
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BLI_hash_mm2a_add(&mm2, (const uchar *)data3, strlen(data3));
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hash = BLI_hash_mm2a_end(&mm2);
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BLI_hash_mm2a_init(&mm2, 0);
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BLI_hash_mm2a_add(&mm2, (const uchar *)data123, strlen(data123));
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#ifdef __LITTLE_ENDIAN__
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EXPECT_EQ(hash, 1545105348);
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#else
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EXPECT_EQ(hash, 2604964730);
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#endif
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EXPECT_EQ(BLI_hash_mm2a_end(&mm2), hash);
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}
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TEST(hash_mm2a, MM2AIntegers)
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{
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BLI_HashMurmur2A mm2;
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uint32_t hash;
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const int ints[4] = {1, 2, 3, 4};
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BLI_hash_mm2a_init(&mm2, 0);
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BLI_hash_mm2a_add_int(&mm2, ints[0]);
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BLI_hash_mm2a_add_int(&mm2, ints[1]);
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BLI_hash_mm2a_add_int(&mm2, ints[2]);
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BLI_hash_mm2a_add_int(&mm2, ints[3]);
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hash = BLI_hash_mm2a_end(&mm2);
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BLI_hash_mm2a_init(&mm2, 0);
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BLI_hash_mm2a_add(&mm2, (const uchar *)ints, sizeof(ints));
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/* Yes, same hash here on little and big endian. */
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#ifdef __LITTLE_ENDIAN__
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EXPECT_EQ(hash, 405493096);
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#else
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EXPECT_EQ(hash, 405493096);
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#endif
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EXPECT_EQ(BLI_hash_mm2a_end(&mm2), hash);
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}
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