From 36a155d1f3a9d9f315655a20d583c13644ef1f3e Mon Sep 17 00:00:00 2001 From: Ryan Harrison Date: Wed, 27 Sep 2017 15:39:26 -0400 Subject: Cleaning up naming of GIF files/classes/variables Moved everything from core/fxcodec/lgif to core/fxcodec/gif Converted CGifContext -> CFX_GifContext Removed _ptr suffixes from CXF_GifContext Movef fx_gif.* -> cfx_gif.* Renamed structs in cfx_gif.h Renamed members of CFX_GifImage Renamed members of CFX_GifContext Renamed CFX_LZWDecoder -> CFX_LZWDecompressor BUG=pdfium:903 Change-Id: I537e905e935da26832e6bbdc03e0373ed5500bcb Reviewed-on: https://pdfium-review.googlesource.com/14990 Commit-Queue: Ryan Harrison Reviewed-by: dsinclair --- core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp | 147 ++++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp (limited to 'core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp') diff --git a/core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp b/core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp new file mode 100644 index 0000000000..cc3ce6367d --- /dev/null +++ b/core/fxcodec/gif/cfx_lzwdecompressor_unittest.cpp @@ -0,0 +1,147 @@ +// Copyright 2017 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "core/fxcodec/gif/cfx_lzwdecompressor.h" + +#include "core/fxcrt/fx_memory.h" +#include "testing/gtest/include/gtest/gtest.h" + +TEST(CFX_LZWDecompressor, CreateBadParams) { + EXPECT_EQ(nullptr, CFX_LZWDecompressor::Create(0x10, 0x2)); + EXPECT_EQ(nullptr, CFX_LZWDecompressor::Create(0x4, 0x0F)); +} + +TEST(CFX_LZWDecompressor, DecodeBadParams) { + uint8_t palette_exp = 0x0; + uint8_t code_exp = 0x2; + + auto decoder = CFX_LZWDecompressor::Create(palette_exp, code_exp); + ASSERT_NE(nullptr, decoder); + + uint8_t image_data[10]; + uint32_t image_size = FX_ArraySize(image_data); + + uint8_t output_data[10]; + uint32_t output_size = FX_ArraySize(output_data); + + EXPECT_EQ(CFX_GifDecodeStatus::Error, + decoder->Decode(nullptr, image_size, output_data, &output_size)); + EXPECT_EQ(CFX_GifDecodeStatus::Error, + decoder->Decode(image_data, 0, output_data, &output_size)); + EXPECT_EQ(CFX_GifDecodeStatus::Error, + decoder->Decode(image_data, image_size, nullptr, &output_size)); + EXPECT_EQ(CFX_GifDecodeStatus::Error, + decoder->Decode(image_data, image_size, output_data, nullptr)); + + output_size = 0; + EXPECT_EQ(CFX_GifDecodeStatus::InsufficientDestSize, + decoder->Decode(image_data, image_size, output_data, &output_size)); +} + +TEST(CFX_LZWDecompressor, Decode1x1SingleColour) { + uint8_t palette_exp = 0x0; + uint8_t code_exp = 0x2; + + auto decoder = CFX_LZWDecompressor::Create(palette_exp, code_exp); + ASSERT_NE(nullptr, decoder); + + uint8_t image_data[] = {0x44, 0x01}; + uint32_t image_size = FX_ArraySize(image_data); + + uint8_t output_data[1]; + uint32_t output_size = FX_ArraySize(output_data); + + EXPECT_EQ(CFX_GifDecodeStatus::Success, + decoder->Decode(image_data, image_size, output_data, &output_size)); + uint8_t expected_data[] = {0x00}; + + EXPECT_EQ(FX_ArraySize(output_data), output_size); + EXPECT_TRUE(0 == memcmp(expected_data, output_data, sizeof(expected_data))); +} + +TEST(CFX_LZWDecompressor, Decode10x10SingleColour) { + uint8_t palette_exp = 0x0; + uint8_t code_exp = 0x2; + + auto decoder = CFX_LZWDecompressor::Create(palette_exp, code_exp); + ASSERT_NE(nullptr, decoder); + + uint8_t image_data[] = {0x84, 0x8F, 0xA9, 0xCB, 0xED, 0x0F, 0x63, 0x2B}; + uint32_t image_size = FX_ArraySize(image_data); + + uint8_t output_data[100]; + memset(output_data, 0, sizeof(output_data)); + uint32_t output_size = FX_ArraySize(output_data); + + EXPECT_EQ(CFX_GifDecodeStatus::Success, + decoder->Decode(image_data, image_size, output_data, &output_size)); + uint8_t expected_data[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00}; + + EXPECT_EQ(FX_ArraySize(output_data), output_size); + EXPECT_TRUE(0 == memcmp(expected_data, output_data, sizeof(expected_data))); +} + +TEST(CFX_LZWDecompressor, Decode10x10MultipleColour) { + uint8_t palette_exp = 0x1; + uint8_t code_exp = 0x2; + + auto decoder = CFX_LZWDecompressor::Create(palette_exp, code_exp); + ASSERT_NE(nullptr, decoder); + + uint8_t image_data[] = {0x8C, 0x2D, 0x99, 0x87, 0x2A, 0x1C, 0xDC, 0x33, + 0xA0, 0x02, 0x75, 0xEC, 0x95, 0xFA, 0xA8, 0xDE, + 0x60, 0x8C, 0x04, 0x91, 0x4C, 0x01}; + uint32_t image_size = FX_ArraySize(image_data); + + uint8_t output_data[100]; + memset(output_data, 0, sizeof(output_data)); + uint32_t output_size = FX_ArraySize(output_data); + + EXPECT_EQ(CFX_GifDecodeStatus::Success, + decoder->Decode(image_data, image_size, output_data, &output_size)); + uint8_t expected_data[] = { + 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x02, + 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, + 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x02, 0x02, + 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, + 0x01, 0x01, 0x01, 0x01}; + + EXPECT_EQ(FX_ArraySize(output_data), output_size); + EXPECT_TRUE(0 == memcmp(expected_data, output_data, sizeof(expected_data))); +} + +TEST(CFX_LZWDecompressor, HandleColourCodeOutOfPalette) { + uint8_t palette_exp = 0x2; // Image uses 10 colours, so the palette exp + // should be 3, 2^(3+1) = 16 colours. + uint8_t code_exp = 0x4; + + auto decoder = CFX_LZWDecompressor::Create(palette_exp, code_exp); + ASSERT_NE(nullptr, decoder); + + uint8_t image_data[] = {0x30, 0xC9, 0x49, 0x81, 0xBD, 0x78, 0xE8, 0xCD, + 0x89, 0xFF, 0x60, 0x20, 0x8E, 0xE4, 0x61, 0x9E, + 0xA8, 0xA1, 0xAE, 0x2C, 0xE2, 0xBE, 0xB0, 0x20, + 0xCF, 0x74, 0x61, 0xDF, 0x78, 0x04}; + uint32_t image_size = FX_ArraySize(image_data); + + uint8_t output_data[100]; + memset(output_data, 0, sizeof(output_data)); + uint32_t output_size = FX_ArraySize(output_data); + + EXPECT_EQ(CFX_GifDecodeStatus::Error, + decoder->Decode(image_data, image_size, output_data, &output_size)); +} -- cgit v1.2.3