DataViewTest

/*
 * Copyright (c) 2002-2025 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.arrays;

import org.htmlunit.WebDriverTestCase;
import org.htmlunit.junit.annotation.Alerts;
import org.junit.jupiter.api.Test;

/**
 * Tests for DataView.
 *
 * @author Ahmed Ashour
 * @author Frank Danek
 * @author Ronald Brill
 */
public class DataViewTest extends WebDriverTestCase {

    /**
     * @throws Exception if the test fails
     */
    @Test
    @Alerts({"22", "3.1415927410125732"})
    public void arrayConstruction() throws Exception {
        final String html = DOCTYPE_HTML
            + "<html><head>\n"
            + "<script>\n"
            + LOG_TITLE_FUNCTION
            + "function test() {\n"
            + "  try {\n"
            + "    var buffer = new ArrayBuffer(12);\n"
            + "    var x = new DataView(buffer);\n"
            + "    x.setInt8(0, 22);\n"
            + "    x.setFloat32(1, Math.PI);\n"
            + "    log(x.getInt8(0));\n"
            + "    log(x.getFloat32(1));\n"
            + "  } catch(e) {logEx(e);}\n"
            + "}\n"
            + "</script></head><body onload='test()'>\n"
            + "</body></html>";

        loadPageVerifyTitle2(html);
    }

    /**
     * @throws Exception if the test fails
     */
    @Test
    @Alerts({"1146420001", "570119236", "-8.36147406512941e+35", "2.1426990032196045",
                "0", "0", "0", "0", "64", "9",
                "33", "-5", "84", "68", "45", "24"})
    public void endian() throws Exception {
        final String html = DOCTYPE_HTML
            + "<html><head>\n"
            + "<script>\n"
            + LOG_TITLE_FUNCTION
            + "function test() {\n"
            + "  try {\n"
            + "    var array = new DataView(new ArrayBuffer(12), 4);\n"
            + "    array.setFloat64(0, Math.PI);\n"
            + "    log(array.getInt32(2, true));\n"
            + "    log(array.getInt32(2, false));\n"
            + "    log(array.getFloat32(0, true));\n"
            + "    log(array.getFloat32(0, false));\n"

            + "    var array2 = new Int8Array(array.buffer);\n"
            + "    for (var i = 0; i < array2.length; i++)\n"
            + "      log(array2[i]);\n"
            + "  } catch(e) {logEx(e);}\n"
            + "}\n"
            + "</script></head><body onload='test()'>\n"
            + "</body></html>";

        loadPageVerifyTitle2(html);
    }

    /**
     * @throws Exception if the test fails
     */
    @Test
    @Alerts({"1234", "0", "4", "-46", "0", "0", "0"})
    public void uint16() throws Exception {
        final String html = DOCTYPE_HTML
            + "<html><head>\n"
            + "<script>\n"
            + LOG_TITLE_FUNCTION
            + "function test() {\n"
            + "  try {\n"
            + "    var array = new DataView(new ArrayBuffer(6), 0);\n"
            + "    array.setUint16(1, 1234);\n"
            + "    log(array.getUint16(1));\n"
            + "    var array2 = new Int8Array(array.buffer);\n"
            + "    for (var i = 0; i < array2.length; i++)\n"
            + "      log(array2[i]);\n"
            + "  } catch(e) {logEx(e);}\n"
            + "}\n"
            + "</script></head><body onload='test()'>\n"
            + "</body></html>";

        loadPageVerifyTitle2(html);
    }

    /**
     * @throws Exception if the test fails
     */
    @Test
    @Alerts("TypeError")
    public void nullConstructor() throws Exception {
        final String html = DOCTYPE_HTML
            + "<html><head>\n"
            + "<script>\n"
            + LOG_TITLE_FUNCTION
            + "function test() {\n"
            + "  try {\n"
            + "    new DataView(null);\n"
            + "  } catch(e) {logEx(e);}\n"
            + "}\n"
            + "</script></head><body onload='test()'>\n"
            + "</body></html>";

        loadPageVerifyTitle2(html);
    }

}