int2of5barcodetest.java

这是个国外JAVA爱好者写的条形码生成器

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package net.sourceforge.barbecue.linear.twoOfFive;

import junit.framework.TestCase;
import net.sourceforge.barbecue.Barcode;
import net.sourceforge.barbecue.BarcodeException;
import net.sourceforge.barbecue.BlankModule;
import net.sourceforge.barbecue.GraphicsMock;
import net.sourceforge.barbecue.Module;
import net.sourceforge.barbecue.SeparatorModule;

import java.text.CharacterIterator;
import java.util.List;
import java.awt.*;

public class Int2of5BarcodeTest extends TestCase {
    private Int2of5Barcode b;
    
    protected void setUp() throws Exception {
        super.setUp();
        b = new Int2of5Barcode("1234567890");
    }
    
    public void testPreAmble() throws Exception {
        assertEquals(new Module(new int[] {1, 1, 1, 1}), b.getPreAmble());
    }
    
    public void testPostAmble() throws Exception {
        assertEquals(new Module(new int[] {2, 1, 1}), b.getPostAmble());
    }
    
    public void testChecksumIsNull() throws Exception {
        assertNull(b.calculateChecksum());
    }
    
    public void testInvalidCharacters() throws Exception {
        try {
            new Int2of5Barcode("1234567890A");
            fail("Non numeric data was allowed via constructor");
        } catch(BarcodeException e) {
        }
    }

    public void testEncodingIsCorrect() throws Exception {
        String data = "12345670";
        Int2of5Barcode barcode = new Int2of5Barcode(data);
        Module[] modules = barcode.encodeData();
        assertEquals(4, modules.length);
        int index = 0;

        
        String bar;
        String space;
        for(int i = 0; i < data.length() - 1; i += 2) {
            bar = String.valueOf(data.charAt(i));
            space = String.valueOf(data.charAt(i + 1));
            assertEquals(Int2of5ModuleFactory.getModule(bar, space), modules[index]);
            index++;
        }
    }
    
    public void testDrawPaintsCorrectBars() throws Exception {
        Int2of5Barcode barcode = new Int2of5Barcode("12345670");
        barcode.setBarWidth(1);
        barcode.setDrawingText(false);
        GraphicsMock g = new GraphicsMock();
        barcode.draw(g, 0, 0);
        int[] expected = new int[] {
            1, 1, 1, 1, // start char
            3, 1, 1, 3, 1, 1, 1, 1, 3, 3, // 1 & 2 - 111010001010111000
            3, 1, 3, 1, 1, 3, 1, 1, 1, 3, // 3 & 4 - 111011101000101000
            3, 1, 1, 3, 3, 3, 1, 1, 1, 1, // 5 & 6 - 111010001110001010
            1, 1, 1, 1, 1, 3, 3, 3, 3, 1, // 7 & 0 - 101010001110001110
            2, 1, 1 // stop char
        };
        List rects = g.getRects();

        assertEquals(47, rects.size());

        for(int i = 0; i < rects.size(); i++) {
            Rectangle rectangle = (Rectangle)rects.get(i);
            assertEquals(expected[i], (int)rectangle.getWidth());
        }
    }
    
    private void assertWidth(String data, int expectedWidth) throws Exception {
        Int2of5Barcode barcode = new Int2of5Barcode(data);
        barcode.setBarWidth(1);
        assertEquals(expectedWidth, barcode.getWidth());
    }
}