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cafb72a498
Add back all the curly braces deleted over the years. Change-Id: I6a48560260c9f9b43091ff66744b83701ea8dea1 Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/130090 Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Thomas Sepez <tsepez@google.com> Commit-Queue: Lei Zhang <thestig@chromium.org>
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
// Copyright 2016 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdint.h>
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#include <array>
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#include <limits>
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#include <memory>
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#include "core/fpdfapi/parser/fpdf_parser_decode.h"
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#include "core/fxcodec/basic/basicmodule.h"
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#include "core/fxcodec/data_and_bytes_consumed.h"
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#include "core/fxcrt/data_vector.h"
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#include "testing/gmock/include/gmock/gmock.h"
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#include "testing/gtest/include/gtest/gtest.h"
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using ::testing::ElementsAreArray;
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TEST(fxcodec, RLEEmptyInput) {
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EXPECT_TRUE(BasicModule::RunLengthEncode({}).empty());
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}
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// Check length 1 input works. Check terminating character is applied.
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TEST(fxcodec, RLEShortInput) {
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const uint8_t src_buf[] = {1};
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf);
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ASSERT_EQ(3u, dest_buf.size());
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EXPECT_EQ(0, dest_buf[0]);
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EXPECT_EQ(1, dest_buf[1]);
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EXPECT_EQ(128, dest_buf[2]);
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}
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// Check a few basic cases (2 matching runs in a row, matching run followed
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// by a non-matching run, and non-matching run followed by a matching run).
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TEST(fxcodec, RLENormalInputs) {
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{
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// Case 1: Match, match
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const uint8_t src_buf_1[] = {2, 2, 2, 2, 4, 4, 4, 4, 4, 4};
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_1);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_1));
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}
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{
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// Case 2: Match, non-match
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const uint8_t src_buf_2[] = {2, 2, 2, 2, 1, 2, 3, 4, 5, 6};
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_2);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_2));
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}
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{
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// Case 3: Non-match, match
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const uint8_t src_buf_3[] = {1, 2, 3, 4, 5, 3, 3, 3, 3, 3};
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_3);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_3));
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}
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}
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// Check that runs longer than 128 are broken up properly, both matched and
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// non-matched.
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TEST(fxcodec, RLEFullLengthInputs) {
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{
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// Case 1: Match, match
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std::array<uint8_t, 260> src_buf_1 = {{1}};
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_1);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_1));
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}
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{
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// Case 2: Match, non-match
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std::array<uint8_t, 260> src_buf_2 = {{2}};
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for (uint16_t i = 128; i < 260; i++) {
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src_buf_2[i] = static_cast<uint8_t>(i - 125);
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}
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_2);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_2));
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}
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{
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// Case 3: Non-match, match
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std::array<uint8_t, 260> src_buf_3 = {};
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for (uint8_t i = 0; i < 128; i++) {
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src_buf_3[i] = i;
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}
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_3);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_3));
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}
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{
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// Case 4: Non-match, non-match
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std::array<uint8_t, 260> src_buf_4;
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for (uint16_t i = 0; i < 260; i++) {
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src_buf_4[i] = static_cast<uint8_t>(i);
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}
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DataVector<uint8_t> dest_buf = BasicModule::RunLengthEncode(src_buf_4);
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DataAndBytesConsumed result = RunLengthDecode(dest_buf);
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EXPECT_THAT(result.data, ElementsAreArray(src_buf_4));
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}
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}
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