public void SetData_with_null_argument_throws_exception()
{
// arrange
FarbfeldImageData target;
target = new FarbfeldImageData();
// act & assert
Assert.Throws<ArgumentNullException>(() => { target.SetData(null); });
}
public void Constructor_with_image_should_extract_data_properly()
{
// arrange
FarbfeldImageData target;
FarbfeldImageData expected;
expected = FarbfeldDecoder.Decode(Path.Combine(this.DataPath, "polygon.png.ff"));
// act
using (Bitmap bitmap = (Bitmap)Image.FromFile(Path.Combine(this.DataPath, "polygon.png")))
{
target = new FarbfeldImageData(bitmap);
}
// assert
// As .NET images used 0-255 for RGB colors, there might not be a direct match between
// the uint16 and byte versions. So when we compare the colours, we'll discard one of the
// bytes and compare only that
this.AssertEqual(expected, target, true);
}
public void SetData_with_invalid_argument_throws_exception()
{
// arrange
FarbfeldImageData target;
Exception ex;
string expectedMessage;
target = new FarbfeldImageData
{
Width = 32,
Height = 32
};
expectedMessage = "Data must contain 4096 elements.";
// act
ex = Assert.Throws<ArgumentException>(() => { target.SetData(new ushort[16]); });
// assert
Assert.AreEqual(expectedMessage, ex.Message);
}
protected void AssertEqual(FarbfeldImageData expected, FarbfeldImageData actual, bool fuzzyMatch)
{
ushort[] expectedData;
ushort[] actualData;
Assert.AreEqual(expected.Width, actual.Width);
Assert.AreEqual(expected.Height, actual.Height);
expectedData = expected.GetData();
actualData = actual.GetData();
Assert.AreEqual(expectedData.Length, actualData.Length);
for (int i = 0; i < expectedData.Length; i++)
{
if (!fuzzyMatch)
{
Assert.AreEqual(expectedData[i], actualData[i]);
}
else
{
byte expectedByte;
byte actualByte;
expectedByte = (byte)(expectedData[i] >> 8);
actualByte = (byte)(actualData[i] >> 8);
Assert.AreEqual(expectedByte, actualByte);
}
}
}
