def createTestBoard(self, anyBlock=True):
        if anyBlock:
            allBlocks = [self.editor.level.materials[a, b] for a in range(256) for b in range(16)]
            blockWidth = 64
        else:
            allBlocks = self.editor.level.materials.allBlocks
            blockWidth = 16
        blockCount = len(allBlocks)

        width = blockWidth * 3 + 1
        rows = blockCount // blockWidth + 1
        length = rows * 3 + 1
        height = 3

        schematic = pymclevel.MCSchematic((width, height, length), mats=self.editor.level.materials)
        schematic.Blocks[:, :, 0] = 1

        for i, block in enumerate(allBlocks):
            col = (i % blockWidth) * 3 + 1
            row = (i // blockWidth) * 3
            schematic.Blocks[col:col + 2, row:row + 2, 2] = block.ID
            schematic.Data[col:col + 2, row:row + 2, 2] = block.blockData

        return schematic