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/*
 * @test
 * @bug 8337506
 * @summary Verify Command Line arguments are not mapped with
 *     "best-fit" mappings on Windows
 * @requires (os.family == "windows")
 * @library /test/lib
 * @run junit DisableBestFitMappingTest
 */
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.util.stream.Stream;
import jdk.test.lib.process.ProcessTools;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;

import static org.junit.jupiter.api.Assertions.*;
import static org.junit.jupiter.api.Assumptions.*;

public class DisableBestFitMappingTest {
    private static final CharsetEncoder NATIVE_ENC =
            Charset.forName(System.getProperty("native.encoding")).newEncoder();
    private static final String REPLACEMENT =
            NATIVE_ENC.charset().decode(ByteBuffer.wrap(NATIVE_ENC.replacement())).toString();
    private static final int EXIT_SUCCESS = 0;
    private static final int EXIT_FAILURE = -1;

    static Stream<Arguments> CMD_ARGS() {
        return Stream.of(
                Arguments.of("aa\uff02 \uff02bb", "aa" + REPLACEMENT + " " + REPLACEMENT + "bb"),
                Arguments.of("aa\uff01bb", "aa" + REPLACEMENT + "bb"),
                Arguments.of("aa\u221ebb", "aa" + REPLACEMENT + "bb")
        );
    }

    @ParameterizedTest
    @MethodSource("CMD_ARGS")
    void testDisableBestFitMapping(String arg, String expected) throws Exception {
        // Only execute if the arg cannot be encoded
        assumeFalse(NATIVE_ENC.canEncode(arg),
                "native.encoding (%s) can encode the argument '%s'. Test ignored."
                        .formatted(NATIVE_ENC.charset(), arg));

        var result= ProcessTools.executeTestJava(
                DisableBestFitMappingTest.class.getSimpleName(), arg, expected);
        result.asLines().forEach(System.out::println);
        assertEquals(EXIT_SUCCESS, result.getExitValue(),
                "Disabling best-fit mapping failed");
    }

    public static void main(String... args) {
        System.out.println(args[0]);
        System.out.println(args[1]);
        System.exit(args[0].equals(args[1]) ? EXIT_SUCCESS : EXIT_FAILURE);
    }
}