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/*
 * @test
 * @bug 8026766 8253321 8349883
 * @summary LanguageRange tests: toString(), hashCode()/equals(), checking
 *          for IAE on ill-formed ranges
 * @run junit LanguageRangeTest
 */

import static java.util.Locale.LanguageRange;

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 java.util.HashMap;
import java.util.Locale;
import java.util.stream.Stream;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

public class LanguageRangeTest {

    // 8349883: Test endpoints w/ ill-formed language range fail with IAE
    @ParameterizedTest
    @MethodSource("illegalRanges")
    public void illformedRangeTest(String range) {
        // static parses
        assertThrows(IllegalArgumentException.class,
                () -> Locale.LanguageRange.parse(range));
        assertThrows(IllegalArgumentException.class,
                () -> Locale.LanguageRange.parse(range, new HashMap<>()));
        // ctors
        assertThrows(IllegalArgumentException.class,
                () -> new Locale.LanguageRange(range));
        assertThrows(IllegalArgumentException.class,
                () -> new Locale.LanguageRange(range, Locale.LanguageRange.MIN_WEIGHT));
    }

    private static Stream<String> illegalRanges() {
        return Stream.of(
                // 8349883 offending range
                "-",
                // Other general ill-formed test cases
                "-foo",
                "foo-",
                "foo1",
                "foo-123456789",
                "*-*-",
                ""
        );
    }

    // 8253321: Ensure invoking hashCode does not affect equals result
    @Test
    public void hashCodeTest() {
        var range1 = new LanguageRange("en-GB", 0);
        var range2 = new LanguageRange("en-GB", 0);
        assertEquals(range1, range2);
        range1.hashCode();
        assertEquals(range1, range2);
        range2.hashCode();
        assertEquals(range1, range2);
    }

    // 8026766: toString() should hide weight if equal to MAX_WEIGHT (1.0)
    @ParameterizedTest
    @MethodSource("ranges")
    public void toStringTest(String range, double weight) {
        LanguageRange lr = new LanguageRange(range, weight);
        String expected = weight == 1.0
                ? range
                : range+";q="+weight;
        assertEquals(lr.toString(), expected);
    }

    private static Stream<Arguments> ranges() {
        return Stream.of(
                Arguments.of("ja", 1.0),
                Arguments.of("de", 0.5),
                Arguments.of("fr", 0.0)
        );
    }
}