rxing 0.8.5

A rust port of the zxing barcode library.
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/*
 * Copyright 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing.datamatrix;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.datamatrix.encoder.SymbolShapeHint;
import org.junit.Assert;
import org.junit.Test;

import java.util.EnumMap;
import java.util.Map;

/**
 * @author satorux@google.com (Satoru Takabayashi) - creator
 * @author dswitkin@google.com (Daniel Switkin) - ported and expanded from C++
 */
public final class DataMatrixWriterTestCase extends Assert {

  @Test
  public void testDataMatrixImageWriter() {

    Map<EncodeHintType,Object> hints = new EnumMap<>(EncodeHintType.class);
    hints.put(EncodeHintType.DATA_MATRIX_SHAPE, SymbolShapeHint.FORCE_SQUARE);

    int bigEnough = 64;
    DataMatrixWriter writer = new DataMatrixWriter();
    BitMatrix matrix = writer.encode("Hello Google", BarcodeFormat.DATA_MATRIX, bigEnough, bigEnough, hints);
    assertNotNull(matrix);
    assertTrue(bigEnough >= matrix.getWidth());
    assertTrue(bigEnough >= matrix.getHeight());
  }

  @Test
  public void testDataMatrixWriter() {

    Map<EncodeHintType,Object> hints = new EnumMap<>(EncodeHintType.class);
    hints.put(EncodeHintType.DATA_MATRIX_SHAPE, SymbolShapeHint.FORCE_SQUARE);

    int bigEnough = 14;
    DataMatrixWriter writer = new DataMatrixWriter();
    BitMatrix matrix = writer.encode("Hello Me", BarcodeFormat.DATA_MATRIX, bigEnough, bigEnough, hints);
    assertNotNull(matrix);
    assertEquals(bigEnough, matrix.getWidth());
    assertEquals(bigEnough, matrix.getHeight());
  }

  @Test
  public void testDataMatrixTooSmall() {
    // The DataMatrix will not fit in this size, so the matrix should come back bigger
    int tooSmall = 8;
    DataMatrixWriter writer = new DataMatrixWriter();
    BitMatrix matrix = writer.encode("http://www.google.com/", BarcodeFormat.DATA_MATRIX, tooSmall, tooSmall, null);
    assertNotNull(matrix);
    assertTrue(tooSmall < matrix.getWidth());
    assertTrue(tooSmall < matrix.getHeight());
  }

}