NameCodecTest.java

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 * accompanied this code).
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package jdk.nashorn.internal.runtime.linker.test;

import static org.testng.Assert.assertEquals;

import jdk.nashorn.internal.runtime.linker.NameCodec;
import org.testng.annotations.Test;

/**
 * Test for jdk.nashorn.intenal.runtime.linker.NameCodec.java. This test is
 * derived from BytecodeNameTest.java from (older) mlvm code @
 * http://hg.openjdk.java.net/mlvm/mlvm/file/tip/netbeans/meth/test/sun/invoke/util/BytecodeNameTest.java
 *
 * @bug 8141285: NameCode should pass tests from BytecodeNameTest.java
 */
public class NameCodecTest {

    static String[][] SAMPLES = {
        // mangled, source
        {"foo", "foo"},
        {"ba\\r", "ba\\r"},
        {"\\=ba\\-%z", "ba\\%z"},
        {"\\=ba\\--z", "ba\\-z"},
        {"=\\=", "=\\="},
        {"\\==\\|\\=", "=/\\="},
        {"\\|\\=", "/\\="},
        {"\\=ba\\!", "ba:"},
        {"\\|", "/"},
        {"\\", "\\"},
        {"\\\\%", "\\$"},
        {"\\\\", "\\\\"},
        {"\\=", ""}

    };

    static final String DANGEROUS_CHARS = "\\/.;:$[]<>";
    static final String REPLACEMENT_CHARS = "-|,?!%{}^_";

    static String[][] canonicalSamples() {
        final int ndc = DANGEROUS_CHARS.length();
        final String[][] res = new String[2 * ndc][];
        for (int i = 0; i < ndc; i++) {
            final char dc = DANGEROUS_CHARS.charAt(i);
            final char rc = REPLACEMENT_CHARS.charAt(i);
            if (dc == '\\') {
                res[2 * i + 0] = new String[]{"\\-%", "\\%"};
            } else {
                res[2 * i + 0] = new String[]{"\\" + rc, "" + dc};
            }
            res[2 * i + 1] = new String[]{"" + rc, "" + rc};
        }
        return res;
    }

    @Test
    public void testEncode() {
        System.out.println("testEncode");
        testEncode(SAMPLES);
        testEncode(canonicalSamples());
    }

    private void testEncode(final String[][] samples) {
        for (final String[] sample : samples) {
            final String s = sample[1];
            final String expResult = sample[0];
            final String result = NameCodec.encode(s);
            if (!result.equals(expResult)) {
                System.out.println(s + " => " + result + " != " + expResult);
            }
            assertEquals(expResult, result);
        }
    }

    @Test
    public void testDecode() {
        System.out.println("testDecode");
        testDecode(SAMPLES);
        testDecode(canonicalSamples());
    }

    private void testDecode(final String[][] samples) {
        for (final String[] sample : samples) {
            final String s = sample[0];
            final String expResult = sample[1];
            final String result = NameCodec.decode(s);
            assertEquals(expResult, result);
        }
    }
}