public void TestExceptionForUnsupportedBitMapType()
{
FileStream fileIn;
try
{
fileIn = new FileStream("../../../images/error_type.bmp", FileMode.Open, FileAccess.ReadWrite);
}
catch (FileNotFoundException)
{
throw new FileNotFoundException("Ошибка! Входной файл не был найден!");
}
bool isValidFile = true;
try
{
BitMapFile file = new BitMapFile(fileIn);
}
catch (Exception ex)
{
if (ex.Message.Contains("Неподдерживаемая битность BMP-файла."))
{
isValidFile = false;
}
}
Assert.IsFalse(isValidFile);
}
public void Setup()
{
FileStream openingFile;
try
{
openingFile = new FileStream("../../../TestImages/testing_file.bmp", FileMode.Open, FileAccess.ReadWrite);
}
catch (FileNotFoundException)
{
throw new Exception("Invalid file path specified");
}
try
{
savingFile = new FileStream("../../../TestImages/save.bmp", FileMode.Create, FileAccess.ReadWrite);
}
catch (Exception)
{
openingFile.Close();
throw new Exception("Failed to open the output file.");
}
file = new(openingFile);
openingFile.Close();
}
public static void ApplyFilter(BitMapFile image)
{
for (int color = 0; color < 3; ++color)
{
for (int i = 1; i < image.Height - 1; ++i)
{
for (int j = image.Channels; j < image.RowByteSize - image.Channels; j += image.Channels)
{
double result = 0;
for (int n = -1; n < 2; ++n)
{
for (int m = -1; m < 2; ++m)
{
double coefficient;
if (m == 0 && n == 0)
{
coefficient = GaussCoefficients[0];
}
else if (m != 0 && n != 0)
{
coefficient = GaussCoefficients[2];
}
else
{
coefficient = GaussCoefficients[1];
}
result += image.ImageBytes[i + n][j + color + image.Channels * m] * coefficient;
}
}
image.ImageBytes[i][j + color] = (byte)result;
}
}
}
}
public static void ApplyFilter(BitMapFile image)
{
for (int i = 0; i < image.Height; ++i)
{
for (int j = 0; j < image.RowByteSize; j += image.Channels)
{
// Colors are stored in BGR order
byte color = (byte)(BlueCoefficient * image.ImageBytes[i][j] +
GreenCoefficient * image.ImageBytes[i][j + 1] +
RedCoefficient * image.ImageBytes[i][j + 2]);
image.ImageBytes[i][j] = color;
image.ImageBytes[i][j + 1] = color;
image.ImageBytes[i][j + 2] = color;
}
}
}
public static void ApplyFilter(BitMapFile image, SobelFilter.Type type)
{
GrayFilter.ApplyFilter(image);
byte[][] copyImageBytes = new byte[image.Height][];
for (int i = 0; i < image.Height; ++i)
{
copyImageBytes[i] = new byte[image.RowByteSize];
for (int j = 0; j < image.RowByteSize; ++j)
{
copyImageBytes[i][j] = image.ImageBytes[i][j];
}
}
for (int i = 1; i < image.Height - 1; ++i)
{
for (int j = image.Channels; j < image.RowByteSize - image.Channels; j += image.Channels)
{
int result = 0;
for (int n = -1; n < 2; ++n)
{
for (int m = -1; m < 2; ++m)
{
if (type == Type.Y)
{
result += (int)(copyImageBytes[i + n][j + image.Channels * m] * SobelYCoefficients[n + 1, m + 1]);
}
else
{
result += (int)(copyImageBytes[i + n][j + image.Channels * m] * SobelXCoefficients[n + 1, m + 1]);
}
}
}
for (int k = 0; k < 3; ++k)
{
image.ImageBytes[i][j + k] = Math.Abs(result) < SobelEdgeLimit ? (byte)0 : (byte)255;
}
}
}
}
public static void ApplyFilter(BitMapFile image)
{
for (int color = 0; color < 3; ++color)
{
for (int i = 1; i < image.Height - 1; ++i)
{
for (int j = image.Channels; j < image.RowByteSize - image.Channels; j += image.Channels)
{
int[] nearColors = new int[9];
for (int n = -1; n < 2; ++n)
{
for (int m = -1; m < 2; ++m)
{
nearColors[(n + 1) * 3 + m + 1] = image.ImageBytes[i + n][j + color + image.Channels * m];
}
}
Array.Sort(nearColors);
image.ImageBytes[i][j + color] = (byte)nearColors[4];
}
}
}
}
public void Setup()
{
FileStream fileIn;
try
{
fileIn = new FileStream("../../../images/in.bmp", FileMode.Open, FileAccess.ReadWrite);
}
catch (FileNotFoundException)
{
throw new FileNotFoundException("Ошибка! Входной файл не был найден!");
}
try
{
fileOut = new FileStream("../../../images/out.bmp", FileMode.Create, FileAccess.ReadWrite);
}
catch (Exception)
{
fileIn.Close();
throw new Exception("Ошибка! Возникла проблема с открытием/созданием выходного файла!");
}
file = new(fileIn);
fileIn.Close();
}
public void TestBrokenBitMapFile()
{
FileStream openingFile;
bool isFoundException = false;
try
{
openingFile = new FileStream("../../../TestImages/error.bmp", FileMode.Open, FileAccess.ReadWrite);
}
catch
{
throw new Exception("Invalid file path specified");
}
try
{
BitMapFile file = new BitMapFile(openingFile);
}
catch (Exception exception)
{
isFoundException = exception.Message.Contains("Unsupported bitness of file.");
}
Assert.IsTrue(isFoundException);
}
