test/jdk/java/io/Console/StdoutEncodingTest.java

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import java.nio.file.Files;
import java.nio.file.Paths;

import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import static jdk.test.lib.Utils.*;

import org.junit.jupiter.api.Assumptions;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;

/**
 * @test
 * @bug 8264208 8265918 8356985 8358158
 * @summary Tests if "stdout.encoding" property is reflected in
 *          Console.charset() method. "expect" command in Windows/Cygwin
 *          does not work as expected. Ignoring tests on Windows.
 * @requires (os.family == "linux") | (os.family == "mac")
 * @library /test/lib
 * @run junit StdoutEncodingTest
 */
public class StdoutEncodingTest {

    @ParameterizedTest
    @CsvSource({
        "en_US.ISO8859-1, ISO-8859-1",
        "en_US.US-ASCII, US-ASCII",
        "en_US.UTF-8, UTF-8"
    })
    void testCharset(String locale, String expectedCharset) throws Exception {
        // check "expect" command availability
        var expect = Paths.get("/usr/bin/expect");
        Assumptions.assumeTrue(Files.exists(expect) && Files.isExecutable(expect),
            "'" + expect + "' not found. Test ignored.");

        // invoking "expect" command
        OutputAnalyzer output = ProcessTools.executeProcess(
                "expect",
                "-n",
                TEST_SRC + "/stdoutEncoding.exp",
                TEST_JDK + "/bin/java",
                locale,
                expectedCharset,
                TEST_CLASSES);
        output.reportDiagnosticSummary();
        output.shouldHaveExitValue(0);
    }

    public static void main(String... args) {
        System.out.println(System.console().charset());
    }
}