public void Parse_InvalidAmountOfNumbers_InvalidDataException()
{
string stringToParse = "P3" + System.Environment.NewLine + "# This is a test image" + System.Environment.NewLine + "3 2" +
System.Environment.NewLine + "255" + System.Environment.NewLine + "255 255 255 122 122 122 100 100 100 155 155 155 180 180 180 200 200 200 200 200";
PnmSerializer serializer = new PnmSerializer();
Assert.ThrowsException <InvalidDataException>(() => serializer.Parse(stringToParse));
}
public void Parse_PixelColourGreaterThanMaxRange_InvalidDataException()
{
string stringToParse = "P3" + System.Environment.NewLine + "# This is a test image" + System.Environment.NewLine + "3 2" +
System.Environment.NewLine + "255" + System.Environment.NewLine + "300 255 255 122 122 122 100 100 100 155 155 155 180 180 180 200 200 200";
PnmSerializer serializer = new PnmSerializer();
Assert.ThrowsException <InvalidDataException>(() => serializer.Parse(stringToParse));
}
public void Parse_MaxRangeNotANumber_InvalidDataException()
{
string stringToParse = "P3" + System.Environment.NewLine + "# This is a test image" + System.Environment.NewLine + "3 2" +
System.Environment.NewLine + "two-hundred-and-fifty-five" + System.Environment.NewLine + "255 255 255 122 122 122 100 100 100 155 155 155 180 180 180 200 200 200";
PnmSerializer serializer = new PnmSerializer();
Assert.ThrowsException <InvalidDataException>(() => serializer.Parse(stringToParse));
}
public void Serialize_ValidImageNoMetadata_True()
{
Pixel[,] pixels = new Pixel[2, 3];
pixels[0, 0] = new Pixel(255);
pixels[0, 1] = new Pixel(122);
pixels[0, 2] = new Pixel(100);
pixels[1, 0] = new Pixel(155);
pixels[1, 1] = new Pixel(180);
pixels[1, 2] = new Pixel(200);
Image image = new Image("", 255, pixels);
string stringToCompare = "P3" + System.Environment.NewLine + "3 2" +
System.Environment.NewLine + "255" + System.Environment.NewLine + "255 255 255 122 122 122 100 100 100 155 155 155 180 180 180 200 200 200";
PnmSerializer serializer = new PnmSerializer();
string imageAsString = serializer.Serialize(image);
Assert.AreEqual(stringToCompare, imageAsString);
}
public void Parse_ValidImageSeveralMetadataLines_True()
{
string stringToParse = "P3" + System.Environment.NewLine + "# This is a test image" + System.Environment.NewLine + "# This is a second line" + System.Environment.NewLine + "3 2" +
System.Environment.NewLine + "255" + System.Environment.NewLine + "255 255 255 122 122 122 100 100 100 155 155 155 180 180 180 200 200 200";
Pixel[,] pixels = new Pixel[2, 3];
pixels[0, 0] = new Pixel(255);
pixels[0, 1] = new Pixel(122);
pixels[0, 2] = new Pixel(100);
pixels[1, 0] = new Pixel(155);
pixels[1, 1] = new Pixel(180);
pixels[1, 2] = new Pixel(200);
Image imageToCompare = new Image("This is a test image" + System.Environment.NewLine + "This is a second line", 255, pixels);
PnmSerializer serializer = new PnmSerializer();
Image image = serializer.Parse(stringToParse);
Assert.AreEqual(imageToCompare, image);
Assert.AreEqual(imageToCompare.Metadata, image.Metadata);
}