determine_coords_from_params now accepts image_size
test_method_determine_pixel_coords
more detector tests
more detector tests
detect_boundary method now use run.tolerance_counter to calculate boundary index, instead of detector.tolerance
removed unnecessary class_method for detect_colour
housekeeping
housekeeping
housekeeping
test factory build_image now uses real instance instead of stub
test_method_add_results_should_increment_tolerance_counter
tolerance_exceeded? method moved out of Run
housekeeping
test_method_detect_nth_boundary
housekeeping
test_method_retrieve_image
test_method_tolerance_exceeded
some detect_boundary logic moved into determine_boundary
TODO update
housekeeping