commons-vfs2/src/test/java/org/apache/commons/vfs2/UrlStructureTests.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.vfs2;

import java.io.IOException;
import java.io.InputStream;

import org.junit.Test;

/**
 * URL Test cases for providers that supply structural info.
 */
public class UrlStructureTests extends AbstractProviderTestCase {
    /**
     * Returns the capabilities required by the tests of this test case.
     */
    @Override
    protected Capability[] getRequiredCapabilities() {
        return new Capability[] {Capability.GET_TYPE, Capability.URI};
    }

    /**
     * Tests that folders have no content.
     */
    @Test
    public void testFolderURL() throws Exception {
        final FileObject folder = getReadFolder().resolveFile("dir1");
        if (folder.getFileSystem().hasCapability(Capability.DIRECTORY_READ_CONTENT)) {
            // test might not fail on e.g. HttpFileSystem as there are no directories.
            // A Directory do have a content on http. e.g a generated directory listing or the index.html page.
            return;
        }

        assertTrue(folder.exists());

        // Try getting the content of a folder
        try (final InputStream inputStream = folder.getURL().openConnection().getInputStream()) {
            fail();
        } catch (final IOException e) {
            assertSameMessage("vfs.provider/read-not-file.error", folder, e);
        }
    }
}