code128barcodetest.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.code128;

import net.sourceforge.barbecue.Barcode;
import net.sourceforge.barbecue.BarcodeException;
import net.sourceforge.barbecue.BarcodeTestCase;
import net.sourceforge.barbecue.BlankModule;
import net.sourceforge.barbecue.CompositeModule;
import net.sourceforge.barbecue.GraphicsMock;
import net.sourceforge.barbecue.Module;
import net.sourceforge.barbecue.env.EnvironmentFactory;

import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.awt.*;
import java.awt.image.BufferedImage;

public class Code128BarcodeTest extends BarcodeTestCase {
	private Code128Barcode barcode;

	protected void setUp() throws Exception {
		super.setUp();
		EnvironmentFactory.setDefaultMode();
		barcode = new Code128Barcode("12345");
	}

	public void testDefaultCharSetIsOptimal() throws Exception {
		Code128Barcode barcode = new Code128Barcode("OPTIMAL");
		assertEquals(Code128Barcode.B, barcode.getCharacterSet());
	}

	public void testCheckDigitIsNotShownInText() throws Exception {
		Code128Barcode barcode = new Code128Barcode("CHECKDIGIT");
		assertEquals(10, barcode.getLabel().length());
	}

	public void testBarcodeWidthIsSameForAAndB() throws Exception {
		try {
			barcode = new Code128Barcode("12345", Code128Barcode.A);
			assertEquals(220, barcode.getWidth());
			barcode = new Code128Barcode("12345", Code128Barcode.B);
			assertEquals(220, barcode.getWidth());
		} catch (UnsupportedOperationException e) {
			// OK - tests running on headless machine
		}
	}

	public void testBarcodeWidthIsSameForAAndBInHeadlessMode() throws Exception {
		EnvironmentFactory.setHeadlessMode();
		assertEquals(220, barcode.getWidth());
	}

	public void testBarcodeWidthIsShorterForC() throws Exception {
		barcode = new Code128Barcode("12345", Code128Barcode.C);
		try {
			assertEquals(176, barcode.getWidth());
		} catch (UnsupportedOperationException e) {
			// OK - tests running on headless machine
		}
	}

	public void testBarcodeWidthIsShorterForCInHeadlesMode() throws Exception {
		EnvironmentFactory.setHeadlessMode();
		barcode = new Code128Barcode("12345", Code128Barcode.C);
		assertEquals(176, barcode.getWidth());
	}

	/** Verifies fix for bug: 742599 */
	public void testMultipleEncodingsAreConstant() throws Exception {
		barcode = new Code128Barcode("123456");
		assertEquals(4, barcode.encodeData().length);
		assertEquals(4, barcode.encodeData().length);
	}

	public void testMinimumHeightIsPoint25InchesIfCalculatedHeightIsSmallerThanPoint25Inches() throws Exception {
		barcode = new Code128Barcode("1");
		double point25Inches = EnvironmentFactory.getEnvironment().getResolution() * 0.25;
		assertEquals((int) point25Inches, barcode.calculateMinimumBarHeight(EnvironmentFactory.getEnvironment().getResolution()));
	}

	public void testMinimumHeightIsCalculatedIfBiggerThanPoint25Inches() throws Exception {
		barcode = new Code128Barcode("34098340968340680363089443634634634");
		double point25Inches = EnvironmentFactory.getEnvironment().getResolution() * 0.25;
		assertTrue(point25Inches < barcode.calculateMinimumBarHeight(72));
	}

	public void testAAndBSetsEncodeIndividualCharacters() throws Exception {
		barcode = new Code128Barcode("($$)");
		Module[] encoded = barcode.encodeData();
		Module[] expected = new Module[] {
			ModuleFactory.getModule("(", Code128Barcode.B),
			ModuleFactory.getModule("$", Code128Barcode.B),
			ModuleFactory.getModule("$", Code128Barcode.B),
			ModuleFactory.getModule(")", Code128Barcode.B)
		};
		assertTrue(Arrays.equals(expected, encoded));
	}

	public void testCSetEncodesDigitPairs() throws Exception {
		barcode = new Code128Barcode("01990199", Code128Barcode.C);
		Module[] encoded = barcode.encodeData();
		Module[] expected = new Module[] {
			ModuleFactory.getModule("01", Code128Barcode.C),
			ModuleFactory.getModule("99", Code128Barcode.C),
			ModuleFactory.getModule("01", Code128Barcode.C),
			ModuleFactory.getModule("99", Code128Barcode.C)
		};
		assertTrue(Arrays.equals(expected, encoded));
	}

	public void testCheckDigitForASetIsInASet() throws Exception {
		barcode = new Code128Barcode("Code 128", Code128Barcode.A);
		assertEquals(ModuleFactory.getModule("B", Code128Barcode.A), barcode.calculateChecksum());
	}

	public void testCheckDigitForBSetIsInBSet() throws Exception {
		barcode = new Code128Barcode("Code 128", Code128Barcode.B);
		assertEquals(ModuleFactory.getModule("`", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCheckDigitForCSetIsInCSet() throws Exception {
		barcode = new Code128Barcode("Code 128", Code128Barcode.C);
		assertEquals(ModuleFactory.getModule("05", Code128Barcode.C), barcode.calculateChecksum());
	}

	public void testMultipleCheckDigitCalculationsAreSame() throws Exception {
		barcode = new Code128Barcode("Code 128");
		Module check1 = barcode.calculateChecksum();
		Code128Barcode barcode2 = new Code128Barcode("Code 128");
		Module check2 = barcode2.calculateChecksum();
		assertEquals(check1, check2);
	}

	public void testCodeCCheckDigitIsInBSetForDigitsOnly() throws Exception {
		barcode = new Code128Barcode("21121976", Code128Barcode.C);
		assertEquals(ModuleFactory.getModule("\307", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testPreAmbleIsQuietZoneAndStartChar() throws Exception {
		CompositeModule module = (CompositeModule) barcode.getPreAmble();
		assertEquals(2, module.size());
	}

	public void testPostAmbleIsStopCharAndQuietZone() throws Exception {
		CompositeModule module = (CompositeModule) barcode.getPostAmble();
		assertEquals(2, module.size());
	}

	public void testQuietZoneWidthIsAtLeast10BarWidths() throws Exception {
		assertTrue(barcode.getPreAmble().widthInBars() > 10);
	}

	public void testCanShiftFromAToB() throws Exception {
		Code128Barcode barcode = new Code128Barcode("1\306i6", Code128Barcode.A);
		Module[] data = barcode.encodeData();
		assertEquals(4, data.length);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[0]);
		assertEquals(ModuleFactory.getModule("\306", Code128Barcode.A), data[1]);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[2]);
		assertEquals(ModuleFactory.getModule("6", Code128Barcode.A), data[3]);

		assertEquals(ModuleFactory.getModule("%", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCanShiftFromBToA() throws Exception {
		Code128Barcode barcode = new Code128Barcode("1\3061i", Code128Barcode.B);
		Module[] data = barcode.encodeData();
		assertEquals(4, data.length);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.B), data[0]);
		assertEquals(ModuleFactory.getModule("\306", Code128Barcode.B), data[1]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[2]);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[3]);

		assertEquals(ModuleFactory.getModule("J", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCanCodeChangeFromAtoB() throws Exception {
		Code128Barcode barcode = new Code128Barcode("11\310ii", Code128Barcode.A);
		Module[] data = barcode.encodeData();
		assertEquals(5, data.length);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[0]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[1]);
		assertEquals(ModuleFactory.getModule("\310", Code128Barcode.A), data[2]);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[3]);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[4]);

		assertEquals(ModuleFactory.getModule("q", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCanCodeChangeFromAtoC() throws Exception {
		Code128Barcode barcode = new Code128Barcode("11\3071111", Code128Barcode.A);
		Module[] data = barcode.encodeData();
		assertEquals(5, data.length);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[0]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[1]);
		assertEquals(ModuleFactory.getModule("\307", Code128Barcode.A), data[2]);
		assertEquals(ModuleFactory.getModule("11", Code128Barcode.C), data[3]);
		assertEquals(ModuleFactory.getModule("11", Code128Barcode.C), data[4]);

		assertEquals(ModuleFactory.getModule("C", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCanCodeChangeFromBtoA() throws Exception {
		Code128Barcode barcode = new Code128Barcode("ii\31111", Code128Barcode.B);
		Module[] data = barcode.encodeData();
		assertEquals(5, data.length);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[0]);
		assertEquals(ModuleFactory.getModule("i", Code128Barcode.B), data[1]);
		assertEquals(ModuleFactory.getModule("\311", Code128Barcode.B), data[2]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[3]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.A), data[4]);

		assertEquals(ModuleFactory.getModule("Z", Code128Barcode.B), barcode.calculateChecksum());
	}

	public void testCanCodeChangeFromBtoC() throws Exception {
		Code128Barcode barcode = new Code128Barcode("11\3071111", Code128Barcode.B);
		Module[] data = barcode.encodeData();
		assertEquals(5, data.length);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.B), data[0]);
		assertEquals(ModuleFactory.getModule("1", Code128Barcode.B), data[1]);
		assertEquals(ModuleFactory.getModule("\307", Code128Barcode.B), data[2]);
		assertEquals(ModuleFactory.getModule("11", Code128Barcode.C), data[3]);
		assertEquals(ModuleFactory.getModule("11", Code128Barcode.C), data[4]);

		assertEquals(ModuleFactory.getModule("D", Code128Barcode.B), barcode.calculateChecksum());
	}

    public void testCanCodeChangeFromBToCWithMixedAlphaNum() throws Exception {
        Code128Barcode barcode = new Code128Barcode("BBQ" + Code128Barcode.CHANGE_TO_C + "012591");
		Module[] data = barcode.encodeData();
		assertEquals(7, data.length);
		assertEquals(ModuleFactory.getModule("B", Code128Barcode.B), data[0]);
		assertEquals(ModuleFactory.getModule("B", Code128Barcode.B), data[1]);
		assertEquals(ModuleFactory.getModule("Q", Code128Barcode.B), data[2]);
		assertEquals(ModuleFactory.getModule("\307", Code128Barcode.B), data[3]);
		assertEquals(ModuleFactory.getModule("01", Code128Barcode.C), data[4]);
		assertEquals(ModuleFactory.getModule("25", Code128Barcode.C), data[5]);
		assertEquals(ModuleFactory.getModule("91", Code128Barcode.C), data[6]);

		assertEquals(ModuleFactory.getModule("