test/jdk/java/lang/String/CompactString/ToLowerCase.java

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

import static org.testng.Assert.assertEquals;


/*
 * @test
 * @bug 8077559
 * @summary Tests Compact String. This one is for String.toLowerCase.
 * @run testng/othervm -XX:+CompactStrings ToLowerCase
 * @run testng/othervm -XX:-CompactStrings ToLowerCase
 */

public class ToLowerCase extends CompactString {

    @DataProvider
    public Object[][] provider() {
        return new Object[][] {
                new Object[] { STRING_EMPTY, "" },
                new Object[] { STRING_L1, "a" },
                new Object[] { STRING_L2, "ab" },
                new Object[] { STRING_U1, "\uFF41" },
                new Object[] { STRING_MDUPLICATE1,
                        "\uFF41a\uFF41a\uFF41a\uFF41a\uFF41a" },
                new Object[] { STRING_SUPPLEMENTARY,
                        "\uD801\uDC28\uD801\uDC29\uFF41a" },
                new Object[] { STRING_SUPPLEMENTARY_LOWERCASE,
                        "\uD801\uDC28\uD801\uDC29\uFF41a" },
                new Object[] { STRING_SUPPLEMENTARY,
                        STRING_SUPPLEMENTARY_LOWERCASE } };
    }

    @Test(dataProvider = "provider")
    public void testToLowerCase(String str, String expected) {
        map.get(str).forEach(
                (source, data) -> {
                    assertEquals(data.toLowerCase(), expected, String.format(
                            "testing String(%s).toLowerCase(), source : %s, ",
                            escapeNonASCIIs(data), source));
                });
    }
}