Test the case when preprocessedImageForTesseract:sourceImage: returns…

… not nil,

but pixForImage: cannot create corresponding Pixs info for that image.

TestsProject/TestsProjectTests/InitializationTests.m

@@ -129,6 +129,19 @@ - (void*)pixForImage:(UIImage *)image;
 
             [[text should] beNil];
         });
+
+        it(@"Should set original image if pixForImage for preprocessed image retuens nil", ^{
+            G8RecognitionTestsHelper *helper = [[G8RecognitionTestsHelper alloc] init];
+            [helper setupTesseract];
+            helper.tesseract.delegate = helper;
+            helper.customPreprocessingType = G8CustomPreprocessingSimpleThreshold;
+            [helper.tesseract stub:@selector(pixForImage:) andReturn:nil];
+
+            UIImage *inputImage = [UIImage imageNamed:@"image_sample.jpg"];
+            helper.tesseract.image = inputImage;
+
+            [[helper.tesseract.image should] equal:inputImage];
+        });
     });
 
     NSString *tessdataPath = @"foo/bar";