TesseractOCRConfig implements Serializable { public void setDepth(int depth) { int[] allowedValues = {2, 4, 8, 16, 32, 64, 256, 4096}; for (int i = 0; i < allowedValues.length; i++) { if (depth == allowedValues[i]) { this.depth = depth; return; } } throw new IllegalArgumentException("Invalid depth value. Valid values are 2, 4, 8, 16, 32, 64, 256, 4096."); } TesseractOCRConfig();  TesseractOCRConfig(InputStream is); String getTesseractPath(); void setTesseractPath(String tesseractPath); String getTessdataPath(); void setTessdataPath(String tessdataPath); String getLanguage(); void setLanguage(String language); String getPageSegMode(); void setPageSegMode(String pageSegMode); String getPageSeparator(); void setPageSeparator(String pageSeparator); void setTrustedPageSeparator(String pageSeparator); void setPreserveInterwordSpacing(boolean preserveInterwordSpacing); boolean getPreserveInterwordSpacing(); long getMinFileSizeToOcr(); void setMinFileSizeToOcr(long minFileSizeToOcr); long getMaxFileSizeToOcr(); void setMaxFileSizeToOcr(long maxFileSizeToOcr); void setTimeout(int timeout); int getTimeout(); void setOutputType(OUTPUT_TYPE outputType); void setOutputType(String outputType); OUTPUT_TYPE getOutputType(); int isEnableImageProcessing(); void setEnableImageProcessing(int enableImageProcessing); int getDensity(); void setDensity(int density); int getDepth(); void setDepth(int depth); String getColorspace(); void setColorspace(String colorspace); String getFilter(); void setFilter(String filter); int getResize(); void setResize(int resize); String getImageMagickPath(); void setImageMagickPath(String imageMagickPath); boolean getApplyRotation(); void setApplyRotation(boolean applyRotation); Map<String, String> getOtherTesseractConfig(); void addOtherTesseractConfig(String key, String value);  }
@Test(expected=IllegalArgumentException.class) public void testValidateDepth() { TesseractOCRConfig config = new TesseractOCRConfig(); config.setDepth(4); config.setDepth(8); assertTrue("Couldn't set valid values", true); config.setDepth(6); }