| // Copyright 2021 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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 "pw_stream/seek.h" |
| |
| #include "gtest/gtest.h" |
| |
| namespace pw::stream { |
| namespace { |
| |
| TEST(ResolveSeekOffset, Beginning) { |
| EXPECT_EQ(ResolveSeekOffset(123, Stream::kBeginning, 0, 0), 123); |
| } |
| |
| TEST(ResolveSeekOffset, Current) { |
| EXPECT_EQ(ResolveSeekOffset(-10, Stream::kCurrent, 0, 100), 90); |
| } |
| |
| TEST(ResolveSeekOffset, End) { |
| EXPECT_EQ(ResolveSeekOffset(-10, Stream::kEnd, 100, 0), 90); |
| } |
| |
| TEST(CalculateSeek, Beginning) { |
| size_t position = 2; |
| EXPECT_EQ(OkStatus(), CalculateSeek(35, Stream::kBeginning, 100, position)); |
| EXPECT_EQ(position, 35u); |
| } |
| |
| TEST(CalculateSeek, Beginning_SeekToBeginning) { |
| size_t position = 99; |
| EXPECT_EQ(OkStatus(), CalculateSeek(0, Stream::kBeginning, 100, position)); |
| EXPECT_EQ(position, 0u); |
| } |
| |
| TEST(CalculateSeek, Beginning_SeekToEnd) { |
| size_t position = 0; |
| EXPECT_EQ(OkStatus(), CalculateSeek(100, Stream::kBeginning, 100, position)); |
| EXPECT_EQ(position, 100u); |
| } |
| |
| TEST(CalculateSeek, Beginning_SeekNegative_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(-1, Stream::kBeginning, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| TEST(CalculateSeek, Beginning_SeekPastEnd_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(101, Stream::kBeginning, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| TEST(CalculateSeek, Current) { |
| size_t position = 100; |
| EXPECT_EQ(OkStatus(), CalculateSeek(1, Stream::kCurrent, 234, position)); |
| EXPECT_EQ(position, 101u); |
| } |
| |
| TEST(CalculateSeek, Current_SeekToBeginning) { |
| size_t position = 99; |
| EXPECT_EQ(OkStatus(), CalculateSeek(-99, Stream::kCurrent, 100, position)); |
| EXPECT_EQ(position, 0u); |
| } |
| |
| TEST(CalculateSeek, Current_SeekToEnd) { |
| size_t position = 10; |
| EXPECT_EQ(OkStatus(), CalculateSeek(90, Stream::kCurrent, 1000, position)); |
| EXPECT_EQ(position, 100u); |
| } |
| |
| TEST(CalculateSeek, Current_SeekNegative_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(-3, Stream::kCurrent, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| TEST(CalculateSeek, Current_SeekPastEnd_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(99, Stream::kCurrent, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| TEST(CalculateSeek, End) { |
| size_t position = 100; |
| EXPECT_EQ(OkStatus(), CalculateSeek(-1, Stream::kEnd, 234, position)); |
| EXPECT_EQ(position, 233u); |
| } |
| |
| TEST(CalculateSeek, End_SeekToBeginning) { |
| size_t position = 50; |
| EXPECT_EQ(OkStatus(), CalculateSeek(-100, Stream::kEnd, 100, position)); |
| EXPECT_EQ(position, 0u); |
| } |
| |
| TEST(CalculateSeek, End_SeekToEnd) { |
| size_t position = 10; |
| EXPECT_EQ(OkStatus(), CalculateSeek(0, Stream::kEnd, 1000, position)); |
| EXPECT_EQ(position, 1000u); |
| } |
| |
| TEST(CalculateSeek, End_SeekNegative_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(-101, Stream::kEnd, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| TEST(CalculateSeek, End_SeekPastEnd_OutOfRange) { |
| size_t position = 2; |
| EXPECT_EQ(Status::OutOfRange(), |
| CalculateSeek(1, Stream::kEnd, 100, position)); |
| EXPECT_EQ(position, 2u); |
| } |
| |
| } // namespace |
| } // namespace pw::stream |