/*
 * Copyright 2008-2026 Async-IO.org
 *
 * 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
 *
 * http://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.atmosphere.interceptor;

import org.junit.jupiter.api.Test;

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

class PaddingAtmosphereInterceptorTest {

    @Test
    void defaultPaddingIs2048PlusNewline() {
        var interceptor = new PaddingAtmosphereInterceptor();
        assertEquals("Browser Padding Interceptor Support", interceptor.toString());
    }

    @Test
    void confPaddingCreatesCorrectLength() {
        var result = PaddingAtmosphereInterceptor.confPadding(10);
        assertEquals(11, result.length()); // 10 spaces + 1 newline
        assertTrue(result.endsWith("\n"));
    }

    @Test
    void confPaddingWithZero() {
        var result = PaddingAtmosphereInterceptor.confPadding(0);
        assertEquals("\n", result);
    }

    @Test
    void confPaddingContainsOnlySpacesAndNewline() {
        var result = PaddingAtmosphereInterceptor.confPadding(100);
        for (int i = 0; i < result.length() - 1; i++) {
            assertEquals(' ', result.charAt(i));
        }
        assertEquals('\n', result.charAt(result.length() - 1));
    }

    @Test
    void customSizeConstructor() {
        var interceptor = new PaddingAtmosphereInterceptor(512);
        assertNotNullToString(interceptor);
    }

    private void assertNotNullToString(PaddingAtmosphereInterceptor interceptor) {
        assertEquals("Browser Padding Interceptor Support", interceptor.toString());
    }
}
