| // Copyright 2024 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "tink/internal/safe_stringops.h" |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace internal { |
| namespace { |
| |
| using ::testing::StrEq; |
| |
| TEST(MemCopyTest, Regular) { |
| char src[] = "hello"; |
| char dst[] = "world"; |
| EXPECT_THAT(dst, StrEq("world")); |
| static_assert(sizeof(src) == sizeof(dst), "size mismatch"); |
| EXPECT_EQ(SafeMemCopy(dst, src, sizeof(src)), dst); |
| EXPECT_THAT(dst, StrEq("hello")); |
| } |
| |
| TEST(MemMoveTest, Regular) { |
| char src[] = "hello"; |
| char dst[] = "world"; |
| EXPECT_THAT(dst, StrEq("world")); |
| static_assert(sizeof(src) == sizeof(dst), "size mismatch"); |
| EXPECT_EQ(SafeMemMove(dst, src, sizeof(src)), dst); |
| EXPECT_THAT(dst, StrEq("hello")); |
| } |
| |
| TEST(MemMoveTest, NoMove) { |
| char mem[] = "hello"; |
| EXPECT_THAT(mem, StrEq("hello")); |
| EXPECT_EQ(SafeMemMove(mem, mem, sizeof(mem)), mem); |
| EXPECT_THAT(mem, StrEq("hello")); |
| } |
| |
| TEST(MemmoveTest, OverlapSuffix) { |
| char mem[] = "hello"; |
| EXPECT_THAT(mem, StrEq("hello")); |
| EXPECT_EQ(SafeMemMove(&mem[1], mem, sizeof(mem) - 2), &mem[1]); |
| EXPECT_THAT(mem, StrEq("hhell")); |
| } |
| |
| TEST(MemMoveTest, OverlapPrefix) { |
| char mem[] = "hello"; |
| EXPECT_THAT(mem, StrEq("hello")); |
| EXPECT_EQ(SafeMemMove(mem, &mem[1], sizeof(mem) - 2), mem); |
| EXPECT_THAT(mem, StrEq("elloo")); |
| } |
| |
| TEST(MemEqualsTest, Equal) { |
| char a[] = "hello"; |
| char b[] = "hello"; |
| EXPECT_NE(a, b); |
| static_assert(sizeof(a) == sizeof(b), "size mismatch"); |
| EXPECT_TRUE(SafeCryptoMemEquals(a, b, sizeof(a))); |
| EXPECT_TRUE(SafeCryptoMemEquals(b, a, sizeof(a))); |
| } |
| |
| TEST(MemEqualsTest, Unequal) { |
| char a[] = "hello"; |
| char b[] = "hellu"; |
| EXPECT_NE(a, b); |
| static_assert(sizeof(a) == sizeof(b), "size mismatch"); |
| EXPECT_FALSE(SafeCryptoMemEquals(a, b, sizeof(a))); |
| EXPECT_FALSE(SafeCryptoMemEquals(b, a, sizeof(a))); |
| } |
| |
| } // namespace |
| } // namespace internal |
| } // namespace tink |
| } // namespace crypto |