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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.

There is a newer version: 8.4.1

/*
 * Copyright (c) 2002-2023 Gargoyle Software Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.htmlunit.javascript.host;

import static org.htmlunit.javascript.configuration.SupportedBrowser.CHROME;
import static org.htmlunit.javascript.configuration.SupportedBrowser.EDGE;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF_ESR;

import org.htmlunit.javascript.configuration.JsxClass;
import org.htmlunit.javascript.configuration.JsxConstructor;
import org.htmlunit.javascript.configuration.JsxFunction;
import org.htmlunit.javascript.host.event.EventTarget;

/**
 * A JavaScript object for {@code FontFaceSet}.
 *
 * @author Ahmed Ashour
 * @author Ronald Brill
 */
@JsxClass(isJSObject = false, value = {CHROME, EDGE})
@JsxClass({FF, FF_ESR})
public class FontFaceSet extends EventTarget {

    /**
     * Creates an instance.
     */
    @JsxConstructor
    public FontFaceSet() {
    }

    /**
     * @param font a font specification using the CSS value syntax, e.g. "italic bold 16px Roboto"
     * @param text limit the font faces to those whose Unicode range contains at least one
     *          of the characters in text. This does not check for individual glyph coverage.
     * @return a Promise of an Array of FontFace loaded. The promise is fulfilled
     *          when all the fonts are loaded; it is rejected if one of the fonts failed to load.
     */
    @JsxFunction
    public Object load(final String font, final String text) {
        return setupPromise(() -> "");
    }
}