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Achieve 50.9% test coverage on ccittfaxdecode
This commit is contained in:
nkryuchkov
parent
600ed85a45
commit
e8505e104f
@ -6,8 +6,9 @@ import (
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)
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var (
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ErrEOFBCorrupt = errors.New("EOFB code is corrupted")
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ErrRTCCorrupt = errors.New("RTC code is corrupted")
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ErrEOFBCorrupt = errors.New("EOFB code is corrupted")
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ErrRTCCorrupt = errors.New("RTC code is corrupted")
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ErrWrongCodeInHorizontalMode = errors.New("wrong code in horizontal mode")
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whiteTree = &decodingTreeNode{
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Val: 255,
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@ -430,7 +431,7 @@ func decodeNextRunLen(encoded, pixelsRow []byte, bitPos int, isWhite bool) ([]by
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}
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if runLen == -1 {
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return pixelsRow, startingBitPos, errors.New("wrong code in horizontal mode")
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return pixelsRow, startingBitPos, ErrWrongCodeInHorizontalMode
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}
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return pixelsRow, bitPos, nil
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@ -1,10 +1,723 @@
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package ccittfaxdecode
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import (
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"log"
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"testing"
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)
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func TestDecodeNextRunLen(t *testing.T) {
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type testResult struct {
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PixelsRow []byte
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BitPos int
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Err error
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}
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type testData struct {
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Encoded []byte
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PixelsRow []byte
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BitPos int
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IsWhite bool
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Want testResult
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}
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tests := []testData{
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{
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Encoded: []byte{1, 28, 2},
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PixelsRow: []byte{},
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BitPos: 16,
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IsWhite: true,
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Want: testResult{
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PixelsRow: []byte{white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white},
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BitPos: 24,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 2, 0, 0, 0},
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PixelsRow: []byte{},
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BitPos: 16,
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IsWhite: true,
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Want: testResult{
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PixelsRow: []byte{white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white},
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BitPos: 24,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 56},
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PixelsRow: []byte{},
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: []byte{black, black, black, black, black, black, black, black, black, black, black,
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black, black, black},
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BitPos: 29,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 56, 0, 0, 0},
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PixelsRow: []byte{},
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: []byte{black, black, black, black, black, black, black, black, black, black, black,
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black, black, black},
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BitPos: 29,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 154, 80},
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PixelsRow: []byte{},
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BitPos: 23,
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IsWhite: true,
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Want: testResult{
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PixelsRow: drawPixels(nil, true, 1624),
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BitPos: 39,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 154, 80, 0, 0},
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PixelsRow: []byte{},
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BitPos: 23,
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IsWhite: true,
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Want: testResult{
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PixelsRow: drawPixels(nil, true, 1624),
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BitPos: 39,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 29, 67, 128},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: drawPixels(nil, false, 1100),
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BitPos: 41,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 29, 67, 128, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: drawPixels(nil, false, 1100),
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BitPos: 41,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 9, 166, 188},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: true,
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Want: testResult{
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PixelsRow: drawPixels(nil, true, 3655),
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BitPos: 46,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 9, 166, 188, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: true,
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Want: testResult{
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PixelsRow: drawPixels(nil, true, 3655),
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BitPos: 46,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 15, 129, 200, 21, 128},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: drawPixels(nil, false, 3502),
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BitPos: 58,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 15, 129, 200, 21, 128, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 21,
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IsWhite: false,
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Want: testResult{
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PixelsRow: drawPixels(nil, false, 3502),
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BitPos: 58,
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Err: nil,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{},
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{},
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: nil,
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: nil,
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: true,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: nil,
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: nil,
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: false,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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}
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for _, test := range tests {
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gotPixelsRow, gotBitPos, gotErr := decodeNextRunLen(test.Encoded, test.PixelsRow, test.BitPos, test.IsWhite)
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if len(gotPixelsRow) != len(test.Want.PixelsRow) {
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t.Errorf("Wrong pixels row len. Got %v, want %v\n", len(gotPixelsRow), len(test.Want.PixelsRow))
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} else {
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for i := range gotPixelsRow {
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if gotPixelsRow[i] != test.Want.PixelsRow[i] {
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t.Errorf("Wrong pixel at %v. Got %v, want %v\n",
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i, gotPixelsRow[i], test.Want.PixelsRow[i])
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}
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}
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}
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if gotBitPos != test.Want.BitPos {
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t.Errorf("Wrong bit pos. Got %v, want %v\n", gotBitPos, test.Want.BitPos)
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}
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if gotErr != test.Want.Err {
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t.Errorf("Wrong err. Got %v, want %v\n", gotErr, test.Want.Err)
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}
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}
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}
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func TestDecodeHorizontalMode(t *testing.T) {
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type testResult struct {
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PixelsRow []byte
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BitPos int
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A0 int
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Err error
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}
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type testData struct {
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Encoded []byte
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PixelsRow []byte
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BitPos int
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IsWhite bool
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A0 int
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Want testResult
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}
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tests := []testData{
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{
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Encoded: []byte{1, 28, 2, 192},
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PixelsRow: []byte{},
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BitPos: 16,
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IsWhite: true,
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A0: 0,
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Want: testResult{
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PixelsRow: []byte{white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, black, black},
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BitPos: 26,
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A0: 31,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 2, 192, 0, 0, 0},
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PixelsRow: []byte{},
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BitPos: 16,
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IsWhite: true,
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A0: 7,
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Want: testResult{
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PixelsRow: []byte{white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, white, white, white, white, white,
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white, white, white, white, white, white, white, black, black},
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BitPos: 26,
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A0: 31,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 56, 224},
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PixelsRow: []byte{},
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BitPos: 21,
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IsWhite: false,
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A0: 0,
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Want: testResult{
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PixelsRow: []byte{black, black, black, black, black, black, black, black, black, black, black,
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black, black, black, white},
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BitPos: 35,
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A0: 15,
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Err: nil,
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},
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},
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{
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Encoded: []byte{1, 28, 40, 56, 224, 0, 0, 0},
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PixelsRow: []byte{},
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BitPos: 21,
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IsWhite: false,
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A0: 10,
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Want: testResult{
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PixelsRow: []byte{black, black, black, black, black, black, black, black, black, black, black,
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black, black, black, white},
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BitPos: 35,
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A0: 15,
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Err: nil,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: true,
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A0: 0,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
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A0: 0,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 2,
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IsWhite: true,
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A0: 120,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 2,
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A0: 120,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
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Encoded: []byte{0, 0, 0, 0, 0},
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PixelsRow: nil,
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BitPos: 0,
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IsWhite: false,
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A0: 10,
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Want: testResult{
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PixelsRow: nil,
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BitPos: 0,
|
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A0: 10,
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Err: ErrWrongCodeInHorizontalMode,
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},
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},
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{
|
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Encoded: []byte{0, 0, 0, 0, 0},
|
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PixelsRow: nil,
|
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BitPos: 2,
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IsWhite: false,
|
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A0: 13,
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Want: testResult{
|
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PixelsRow: nil,
|
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BitPos: 2,
|
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A0: 13,
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: []byte{},
|
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PixelsRow: nil,
|
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BitPos: 0,
|
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IsWhite: true,
|
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A0: 23,
|
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Want: testResult{
|
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PixelsRow: nil,
|
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BitPos: 0,
|
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A0: 23,
|
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: []byte{},
|
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PixelsRow: nil,
|
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BitPos: 2,
|
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IsWhite: true,
|
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A0: 34,
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Want: testResult{
|
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PixelsRow: nil,
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BitPos: 2,
|
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A0: 34,
|
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: []byte{},
|
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PixelsRow: nil,
|
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BitPos: 0,
|
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IsWhite: false,
|
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A0: 134,
|
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Want: testResult{
|
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PixelsRow: nil,
|
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BitPos: 0,
|
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A0: 134,
|
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: []byte{},
|
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PixelsRow: nil,
|
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BitPos: 2,
|
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IsWhite: false,
|
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A0: 35,
|
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Want: testResult{
|
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PixelsRow: nil,
|
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BitPos: 2,
|
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A0: 35,
|
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: nil,
|
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PixelsRow: nil,
|
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BitPos: 0,
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IsWhite: true,
|
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A0: 876,
|
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Want: testResult{
|
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PixelsRow: nil,
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BitPos: 0,
|
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A0: 876,
|
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Err: ErrWrongCodeInHorizontalMode,
|
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},
|
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},
|
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{
|
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Encoded: nil,
|
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PixelsRow: nil,
|
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BitPos: 2,
|
||||
IsWhite: true,
|
||||
A0: 738,
|
||||
Want: testResult{
|
||||
PixelsRow: nil,
|
||||
BitPos: 2,
|
||||
A0: 738,
|
||||
Err: ErrWrongCodeInHorizontalMode,
|
||||
},
|
||||
},
|
||||
{
|
||||
Encoded: nil,
|
||||
PixelsRow: nil,
|
||||
BitPos: 0,
|
||||
IsWhite: false,
|
||||
A0: 283,
|
||||
Want: testResult{
|
||||
PixelsRow: nil,
|
||||
BitPos: 0,
|
||||
A0: 283,
|
||||
Err: ErrWrongCodeInHorizontalMode,
|
||||
},
|
||||
},
|
||||
{
|
||||
Encoded: nil,
|
||||
PixelsRow: nil,
|
||||
BitPos: 2,
|
||||
IsWhite: false,
|
||||
A0: 29,
|
||||
Want: testResult{
|
||||
PixelsRow: nil,
|
||||
BitPos: 2,
|
||||
A0: 29,
|
||||
Err: ErrWrongCodeInHorizontalMode,
|
||||
},
|
||||
},
|
||||
{
|
||||
Encoded: []byte{1, 28, 2, 0, 0, 0, 0, 0},
|
||||
PixelsRow: nil,
|
||||
BitPos: 16,
|
||||
IsWhite: true,
|
||||
A0: 0,
|
||||
Want: testResult{
|
||||
PixelsRow: []byte{white, white, white, white, white, white, white, white, white, white, white, white,
|
||||
white, white, white, white, white, white, white, white, white, white, white, white, white, white,
|
||||
white, white, white},
|
||||
BitPos: 16,
|
||||
A0: 0,
|
||||
Err: ErrWrongCodeInHorizontalMode,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
resultingPixelsRow1 := drawPixels(nil, true, 1624)
|
||||
resultingPixelsRow1 = drawPixels(resultingPixelsRow1, false, 1728)
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 154, 80, 6, 80, 220},
|
||||
PixelsRow: []byte{},
|
||||
BitPos: 23,
|
||||
IsWhite: true,
|
||||
A0: 0,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow1,
|
||||
BitPos: 62,
|
||||
A0: 3352,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 154, 80, 6, 80, 220, 0, 0, 0},
|
||||
PixelsRow: []byte{},
|
||||
BitPos: 23,
|
||||
IsWhite: true,
|
||||
A0: 112,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow1,
|
||||
BitPos: 62,
|
||||
A0: 3352,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
resultingPixelsRow2 := drawPixels(nil, false, 1100)
|
||||
resultingPixelsRow2 = drawPixels(resultingPixelsRow2, true, 1027)
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 29, 67, 181, 96},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: false,
|
||||
A0: 0,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow2,
|
||||
BitPos: 54,
|
||||
A0: 2127,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 29, 67, 181, 96, 0, 0, 0},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: false,
|
||||
A0: 109,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow2,
|
||||
BitPos: 54,
|
||||
A0: 2127,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
resultingPixelsRow3 := drawPixels(nil, true, 3655)
|
||||
resultingPixelsRow3 = drawPixels(resultingPixelsRow3, false, 3547)
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 9, 166, 188, 7, 192, 230, 25, 96},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: true,
|
||||
A0: 0,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow3,
|
||||
BitPos: 83,
|
||||
A0: 7202,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 9, 166, 188, 7, 192, 230, 25, 96, 0, 0, 0},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: true,
|
||||
A0: 1121,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow3,
|
||||
BitPos: 83,
|
||||
A0: 7202,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
resultingPixelsRow4 := drawPixels(nil, false, 3502)
|
||||
resultingPixelsRow4 = drawPixels(resultingPixelsRow4, true, 3488)
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 15, 129, 200, 21, 128, 125, 166, 54},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: false,
|
||||
A0: 0,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow4,
|
||||
BitPos: 87,
|
||||
A0: 6990,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
tests = append(tests, testData{
|
||||
Encoded: []byte{1, 28, 40, 15, 129, 200, 21, 128, 125, 166, 54, 0, 0, 0},
|
||||
PixelsRow: nil,
|
||||
BitPos: 21,
|
||||
IsWhite: false,
|
||||
A0: 2148,
|
||||
Want: testResult{
|
||||
PixelsRow: resultingPixelsRow4,
|
||||
BitPos: 87,
|
||||
A0: 6990,
|
||||
Err: nil,
|
||||
},
|
||||
})
|
||||
|
||||
for _, test := range tests {
|
||||
gotPixelsRow, gotBitPos, gotA0, gotErr := decodeHorizontalMode(test.Encoded, test.PixelsRow,
|
||||
test.BitPos, test.IsWhite, test.A0)
|
||||
|
||||
if len(gotPixelsRow) != len(test.Want.PixelsRow) {
|
||||
t.Errorf("Wrong pixels row len. Got %v, want %v\n", len(gotPixelsRow), len(test.Want.PixelsRow))
|
||||
} else {
|
||||
for i := range gotPixelsRow {
|
||||
if gotPixelsRow[i] != test.Want.PixelsRow[i] {
|
||||
t.Errorf("Wrong pixel at %v. Got %v, want %v\n",
|
||||
i, gotPixelsRow[i], test.Want.PixelsRow[i])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if gotBitPos != test.Want.BitPos {
|
||||
t.Errorf("Wrong bit pos. Got %v, want %v\n", gotBitPos, test.Want.BitPos)
|
||||
}
|
||||
|
||||
if gotA0 != test.Want.A0 {
|
||||
t.Errorf("Wrong A0. Got %v, want %v\n", gotA0, test.Want.A0)
|
||||
}
|
||||
|
||||
if gotErr != test.Want.Err {
|
||||
t.Errorf("Wrong err. Got %v, want %v\n", gotErr, test.Want.Err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestDecodeRow1D(t *testing.T) {
|
||||
type testResult struct {
|
||||
PixelsRow []byte
|
||||
@ -229,13 +942,9 @@ func TestDecodeRow1D(t *testing.T) {
|
||||
},
|
||||
})
|
||||
|
||||
for i, test := range tests {
|
||||
for _, test := range tests {
|
||||
gotPixelsRow, gotBitPos := test.Encoder.decodeRow1D(test.Encoded, test.BitPos)
|
||||
|
||||
if i == 6 {
|
||||
log.Println()
|
||||
}
|
||||
|
||||
if len(gotPixelsRow) != len(test.Want.PixelsRow) {
|
||||
t.Errorf("Wrong pixels row len. Got %v, want %v\n",
|
||||
len(gotPixelsRow), len(test.Want.PixelsRow))
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user