public void TestIfExecuteFilterTestsNullEvent()
{
var filename = "test7a.png";
TestIfExecuteFilterCallsEventHelper(filename);
filename = "test7b.png";
var filter = new ImageFilter();
var testBitmap = GetTestBitmap();
SaveBitmap(testBitmap, filename);
filter.Load(filename);
try
{
TestLoadHelper(filter, testBitmap);
try
{
filter.ExecuteFilter((p) => { return(p); });
}
catch (Exception e)
{
Assert.Fail($"Method \'ExecuteFilter\' calls event even if it is null: \'{e.GetType().ToString()}\' is thrown.");
}
}
finally
{
filter.OriginalImage.Dispose();
filter.FilteredImage.Dispose();
}
}
private void TestIfExecuteFilterCallsEventHelper(string filename)
{
TestIfImageFilterContainsEvent();
ImageFilter filter = new ImageFilter();
var testBitmap = GetTestBitmap();
SaveBitmap(testBitmap, filename);
filter.Load(filename);
try
{
TestLoadHelper(filter, testBitmap);
int eventCounter = 0;
int eventValue = -1;
EventInfo eventInfo = typeof(ImageFilter).GetEvents().FirstOrDefault();
if (eventInfo != null)
{
var parameters = eventInfo.EventHandlerType.GetMethod("Invoke").GetParameters();
MethodInfo addHandler = eventInfo.GetAddMethod();
Action <int> dummy = (i) =>
{
eventCounter++;
eventValue = i;
};
Object[] addHandlerArgs = { dummy };
addHandler.Invoke(filter, addHandlerArgs);
}
;
filter.ExecuteFilter((p) => { return(p); });
Assert.IsTrue((eventCounter > 0), $"Method \'ExecuteFilter\' does not call its \'{eventInfo.Name}\' event.");
Assert.IsTrue((eventCounter > Math.Min(testBitmap.Height, testBitmap.Width) / 2),
$"Method \'ExecuteFilter\' calls its \'{eventInfo.Name}\' event only {eventCounter} times for bitmap with {testBitmap.Height} lines of {testBitmap.Width} pixels.");
Assert.IsTrue((eventValue >= 90), $"ExecuteFilter - Last value from \'{eventInfo.Name}\' event is {eventValue}, expected 100.");
}
finally
{
filter.OriginalImage.Dispose();
filter.FilteredImage.Dispose();
}
}
public void TestExecuteFilter()
{
var filename = "test1.png";
ImageFilter filter = new ImageFilter();
var testBitmap = GetTestBitmap();
SaveBitmap(testBitmap, filename);
filter.Load(filename);
try
{
TestLoadHelper(filter, testBitmap);
AttachDummyEventHandler(filter);
filter.ExecuteFilter((p) => { return(Color.FromArgb(1, 2, 3)); });
var filteredBitmap = filter.FilteredImage;
Assert.IsNotNull(filteredBitmap, $"ImageFilter - upon calling \'ExecuteFilter\', property \'FilteredImage\' is null.");
var originalBitmap = filter.OriginalImage;
Assert.IsTrue(((originalBitmap.Width == filteredBitmap.Width) && (originalBitmap.Height == filteredBitmap.Height)),
$"ImageFilter - upon calling \'ExecuteFilter\', property \'filteredImage\' has wrong size.");
for (int x = 0; x < filteredBitmap.Width; x++)
{
for (int y = 0; y < filteredBitmap.Height; y++)
{
var c = filteredBitmap.GetPixel(x, y);
Assert.IsTrue(
((c.R == 1) &&
(c.G == 2) &&
(c.B == 3)), $"ImageFilter - upon calling \'ExecuteFilter\', property \'FilteredImage\' contains wrong bitmap.");
}
}
}
finally
{
filter.OriginalImage.Dispose();
filter.FilteredImage.Dispose();
}
}
