1 /*
2 * Copyright 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <ftl/hash.h>
18 #include <gtest/gtest.h>
19
20 #include <numeric>
21 #include <string>
22
23 namespace android::test {
24
TEST(Hash,StableHash)25 TEST(Hash, StableHash) {
26 EXPECT_EQ(11160318154034397263ull, (ftl::stable_hash({})));
27
28 std::string string(64, '?');
29 std::iota(string.begin(), string.end(), 'A');
30
31 // Maximum length is 64 characters.
32 EXPECT_FALSE(ftl::stable_hash(string + '\n'));
33
34 EXPECT_EQ(6278090252846864564ull, ftl::stable_hash(std::string_view(string).substr(0, 8)));
35 EXPECT_EQ(1883356980931444616ull, ftl::stable_hash(std::string_view(string).substr(0, 16)));
36 EXPECT_EQ(8073093283835059304ull, ftl::stable_hash(std::string_view(string).substr(0, 32)));
37 EXPECT_EQ(18197365392429149980ull, ftl::stable_hash(string));
38 }
39
40 } // namespace android::test
41