test/langtools/jdk/jshell/InputUITest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8356165
 * @summary Check user input works properly
 * @modules
 *     jdk.compiler/com.sun.tools.javac.api
 *     jdk.compiler/com.sun.tools.javac.main
 *     jdk.jshell/jdk.internal.jshell.tool:open
 *     jdk.jshell/jdk.internal.jshell.tool.resources:open
 *     jdk.jshell/jdk.jshell:open
 * @library /tools/lib
 * @build toolbox.ToolBox toolbox.JarTask toolbox.JavacTask
 * @build Compiler UITesting
 * @compile InputUITest.java
 * @run testng/othervm -Dstderr.encoding=UTF-8 -Dstdin.encoding=UTF-8 -Dstdout.encoding=UTF-8 InputUITest
 */

import java.util.function.Function;
import org.testng.annotations.Test;

@Test
public class InputUITest extends UITesting {

    static final String LINE_SEPARATOR = System.getProperty("line.separator");
    static final String LINE_SEPARATOR_ESCAPED = LINE_SEPARATOR.replace("\n", "\\n")
                                                               .replace("\r", "\\r");

    public InputUITest() {
        super(true);
    }

    public void testUserInputWithSurrogates() throws Exception {
        Function<Integer, String> genSnippet =
                realCharsToRead -> "new String(System.in.readNBytes(" +
                                   (realCharsToRead + LINE_SEPARATOR.length()) +
                                   "))\n";
        doRunTest((inputSink, out) -> {
            inputSink.write(genSnippet.apply(4) + "\uD83D\uDE03\n");
            waitOutput(out, patternQuote("\"\uD83D\uDE03" + LINE_SEPARATOR_ESCAPED + "\""));
            inputSink.write(genSnippet.apply(1) + "\uD83D\n");
            waitOutput(out, patternQuote("\"?" + LINE_SEPARATOR_ESCAPED + "\""));
            inputSink.write(genSnippet.apply(1) + "\uDE03\n");
            waitOutput(out, patternQuote("\"?" + LINE_SEPARATOR_ESCAPED + "\""));
        }, false);
    }

}