test/jdk/java/net/UnixDomainSocketAddress/LengthTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @summary Test UnixDomainSocketAddress constructor
 * @library /test/lib
 * @run testng/othervm LengthTest
 */

import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

import static java.lang.System.out;
import static java.net.StandardProtocolFamily.UNIX;
import static jdk.test.lib.Asserts.assertTrue;

import java.net.UnixDomainSocketAddress;
import java.io.IOException;
import java.nio.channels.SocketChannel;
import java.nio.file.Path;

public class LengthTest {
    final int namelen = 100;    // length close to max

    @DataProvider(name = "strings")
    public Object[][] strings() {
        if (namelen == -1)
            return new Object[][] {new String[]{""}};

        return new Object[][]{
                {""},
                {new String(new char[100]).replaceAll("\0", "x")},
                {new String(new char[namelen]).replaceAll("\0", "x")},
                {new String(new char[namelen-1]).replaceAll("\0", "x")},
        };
    }

    @Test(dataProvider = "strings")
    public void expectPass(String s) {
        var addr = UnixDomainSocketAddress.of(s);
        assertTrue(addr.getPath().toString().equals(s), "getPathName.equals(s)");
        var p = Path.of(s);
        addr = UnixDomainSocketAddress.of(p);
        assertTrue(addr.getPath().equals(p), "getPath.equals(p)");
    }

    @Test
    public void expectNPE() {
        try {
            String s = null;
            UnixDomainSocketAddress.of(s);
            throw new RuntimeException("Expected NPE");
        } catch (NullPointerException npe) {
            out.println("\tCaught expected exception: " + npe);
        }
        try {
            Path p = null;
            UnixDomainSocketAddress.of(p);
            throw new RuntimeException("Expected NPE");
        } catch (NullPointerException npe) {
            out.println("\tCaught expected exception: " + npe);
        }
    }
}