third_party/WebKit/Source/platform/image-decoders/bmp/BMPImageDecoderTest.cpp - Issue 2930513004: [WIP] Move ImageDecoders to SkCodec

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Issue 2930513004: [WIP] Move ImageDecoders to SkCodec

Patch Set: Adding check for decoder creation Created 3 years, 6 months ago

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1 // Copyright 2015 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #include "platform/image-decoders/bmp/BMPImageDecoder.h"

6

7 #include <memory>

8 #include "platform/SharedBuffer.h"

9 #include "platform/image-decoders/ImageDecoderTestHelpers.h"

10 #include "platform/wtf/PtrUtil.h"

11 #include "testing/gtest/include/gtest/gtest.h"

12

13 namespace blink {

14

15 namespace {

16

17 std::unique_ptr<ImageDecoder> CreateDecoder() {

18 return WTF::WrapUnique(

19 new BMPImageDecoder(ImageDecoder::kAlphaNotPremultiplied,

20 ColorBehavior::TransformToTargetForTesting(),

21 ImageDecoder::kNoDecodedImageByteLimit));

22 }

23

24 } // anonymous namespace

25

26 TEST(BMPImageDecoderTest, isSizeAvailable) {

27 const char* bmp_file = "/LayoutTests/images/resources/lenna.bmp"; // 256x256

28 RefPtr<SharedBuffer> data = ReadFile(bmp_file);

29 ASSERT_TRUE(data.Get());

30

31 std::unique_ptr<ImageDecoder> decoder = CreateDecoder();

32 decoder->SetData(data.Get(), true);

33 EXPECT_TRUE(decoder->IsSizeAvailable());

34 EXPECT_EQ(256, decoder->Size().Width());

35 EXPECT_EQ(256, decoder->Size().Height());

36 }

37

38 TEST(BMPImageDecoderTest, parseAndDecode) {

39 const char* bmp_file = "/LayoutTests/images/resources/lenna.bmp"; // 256x256

40 RefPtr<SharedBuffer> data = ReadFile(bmp_file);

41 ASSERT_TRUE(data.Get());

42

43 std::unique_ptr<ImageDecoder> decoder = CreateDecoder();

44 decoder->SetData(data.Get(), true);

45

46 ImageFrame* frame = decoder->FrameBufferAtIndex(0);

47 ASSERT_TRUE(frame);

48 EXPECT_EQ(ImageFrame::kFrameComplete, frame->GetStatus());

49 EXPECT_EQ(256, frame->Bitmap().width());

50 EXPECT_EQ(256, frame->Bitmap().height());

51 EXPECT_FALSE(decoder->Failed());

52 }

53

54 // Test if a BMP decoder returns a proper error while decoding an empty image.

55 TEST(BMPImageDecoderTest, emptyImage) {

56 const char* bmp_file = "/LayoutTests/images/resources/0x0.bmp"; // 0x0

57 RefPtr<SharedBuffer> data = ReadFile(bmp_file);

58 ASSERT_TRUE(data.Get());

59

60 std::unique_ptr<ImageDecoder> decoder = CreateDecoder();

61 decoder->SetData(data.Get(), true);

62

63 ImageFrame* frame = decoder->FrameBufferAtIndex(0);

64 ASSERT_TRUE(frame);

65 EXPECT_EQ(ImageFrame::kFrameEmpty, frame->GetStatus());

66 EXPECT_TRUE(decoder->Failed());

67 }

68

69 TEST(BMPImageDecoderTest, int32MinHeight) {

70 const char* bmp_file =

71 "/LayoutTests/images/resources/1xint32_min.bmp"; // 0xINT32_MIN

72 RefPtr<SharedBuffer> data = ReadFile(bmp_file);

73 std::unique_ptr<ImageDecoder> decoder = CreateDecoder();

74 // Test when not all data is received.

75 decoder->SetData(data.Get(), false);

76 EXPECT_FALSE(decoder->IsSizeAvailable());

77 EXPECT_TRUE(decoder->Failed());

78 }

79

80 // This test verifies that calling SharedBuffer::MergeSegmentsIntoBuffer() does

81 // not break BMP decoding at a critical point: in between a call to decode the

82 // size (when BMPImageDecoder stops while it may still have input data to

83 // read) and a call to do a full decode.

84 TEST(BMPImageDecoderTest, mergeBuffer) {

85 const char* bmp_file = "/LayoutTests/images/resources/lenna.bmp";

86 TestMergeBuffer(&CreateDecoder, bmp_file);

87 }

88

89 } // namespace blink

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