test/jdk/java/nio/charset/Charset/AvailableCharsetNames.java

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/* @test
 * @bug 4422044
 * @summary Ensure that keys in available-charset map
 *          are identical to canonical names
 * @run junit AvailableCharsetNames
 */

import java.nio.charset.Charset;

import org.junit.jupiter.api.Test;

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

public class AvailableCharsetNames {

    /**
     * Test that the keys in Charset.availableCharsets()
     * are equal to the associated Charset.name() value.
     */
    @Test
    public void canonicalNamesTest() {
        for (String charsetName : Charset.availableCharsets().keySet()) {
            Charset charset = Charset.forName(charsetName);
            assertEquals(charset.name(), charsetName, "Charset name mismatch");
        }
    }
}