def METHOD_NAME(self):
    x_range = (-1, 1)
    y_range = (-2, 2)
    z_range = (-3, 3)
    interior_box = box_utils.CoordinateBox(x_range, y_range, z_range)
    x_range = (-10, 10)
    y_range = (-20, 20)
    z_range = (-30, 30)
    box = box_utils.CoordinateBox(x_range, y_range, z_range)
    boxes = [interior_box, box]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 1
    x_range = (-10, 10)
    y_range = (-20, 20)
    z_range = (-30, 30)
    box1 = box_utils.CoordinateBox(x_range, y_range, z_range)
    x_range = (-11, 9)
    y_range = (-20, 20)
    z_range = (-30, 30)
    box2 = box_utils.CoordinateBox(x_range, y_range, z_range)
    boxes = [box1, box2]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 1
    box1 = box_utils.CoordinateBox((0, 1), (0, 1), (0, 1))
    box2 = box_utils.CoordinateBox((2, 3), (2, 3), (2, 3))
    boxes = [box1, box2]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 2
    box1 = box_utils.CoordinateBox((1, 2), (1, 2), (1, 2))
    box2 = box_utils.CoordinateBox((1, 3), (1, 3), (1, 3))
    boxes = [box1, box2]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 1
    assert merged_boxes[0] == box_utils.CoordinateBox((1, 3), (1, 3),
                                                      (1, 3))
    box1 = box_utils.CoordinateBox((1, 3), (1, 3), (1, 3))
    box2 = box_utils.CoordinateBox((1, 2), (1, 2), (1, 2))
    boxes = [box1, box2]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 1
    assert merged_boxes[0] == box_utils.CoordinateBox((1, 3), (1, 3),
                                                      (1, 3))
    box1 = box_utils.CoordinateBox((1, 3), (1, 3), (1, 3))
    box2 = box_utils.CoordinateBox((1, 2), (1, 2), (1, 2))
    box3 = box_utils.CoordinateBox((1, 2.5), (1, 2.5), (1, 2.5))
    boxes = [box1, box2, box3]
    merged_boxes = box_utils.merge_overlapping_boxes(boxes)
    assert len(merged_boxes) == 1
    assert merged_boxes[0] == box_utils.CoordinateBox((1, 3), (1, 3),
                                                      (1, 3))