1 // Copyright 2020 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include "gtest/gtest.h"
16 #include "pw_kvs/crc16_checksum.h"
17 #include "pw_kvs/fake_flash_memory.h"
18 #include "pw_kvs/flash_partition_with_stats.h"
19 #include "pw_kvs/key_value_store.h"
20
21 namespace pw::kvs {
22 namespace {
23
24 using std::byte;
25
26 #ifndef PW_KVS_FUZZ_ITERATIONS
27 #define PW_KVS_FUZZ_ITERATIONS 2
28 #endif // PW_KVS_FUZZ_ITERATIONS
29 constexpr int kFuzzIterations = PW_KVS_FUZZ_ITERATIONS;
30
31 constexpr size_t kMaxEntries = 256;
32 constexpr size_t kMaxUsableSectors = 256;
33
34 // 4 x 4k sectors, 16 byte alignment
35 FakeFlashMemoryBuffer<4 * 1024, 6> test_flash(16);
36
37 FlashPartitionWithStatsBuffer<kMaxUsableSectors> test_partition(
38 &test_flash, 0, test_flash.sector_count());
39
40 ChecksumCrc16 checksum;
41
42 class EmptyInitializedKvs : public ::testing::Test {
43 protected:
44 // For KVS magic value always use a random 32 bit integer rather than a
45 // human readable 4 bytes. See pw_kvs/format.h for more information.
EmptyInitializedKvs()46 EmptyInitializedKvs()
47 : kvs_(&test_partition, {.magic = 0x873a9b50, .checksum = &checksum}) {
48 test_partition.Erase(0, test_partition.sector_count());
49 ASSERT_EQ(OkStatus(), kvs_.Init());
50 }
51
52 KeyValueStoreBuffer<kMaxEntries, kMaxUsableSectors> kvs_;
53 };
54
TEST_F(EmptyInitializedKvs,Put_VaryingKeysAndValues)55 TEST_F(EmptyInitializedKvs, Put_VaryingKeysAndValues) {
56 char value[] =
57 "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" // 52
58 "34567890123"; // 64 (with final \0);
59 static_assert(sizeof(value) == 64);
60
61 test_partition.ResetCounters();
62
63 for (int i = 0; i < kFuzzIterations; ++i) {
64 for (unsigned key_size = 1; key_size < sizeof(value); ++key_size) {
65 for (unsigned value_size = 0; value_size < sizeof(value); ++value_size) {
66 ASSERT_EQ(OkStatus(),
67 kvs_.Put(std::string_view(value, key_size),
68 std::as_bytes(std::span(value, value_size))));
69 }
70 }
71 }
72
73 test_partition.SaveStorageStats(kvs_, "fuzz Put_VaryingKeysAndValues");
74 }
75
76 } // namespace
77 } // namespace pw::kvs
78