HandlerTests.java

/*
 * Copyright 2012-2016 the original author or authors.
 *
 * 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.springframework.boot.loader.jar;

import java.net.MalformedURLException;
import java.net.URL;

import org.junit.Test;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Tests for {@link Handler}.
 *
 * @author Andy Wilkinson
 */
public class HandlerTests {

	private final Handler handler = new Handler();

	@Test
	public void parseUrlWithJarRootContextAndAbsoluteSpecThatUsesContext()
			throws MalformedURLException {
		String spec = "/entry.txt";
		URL context = createUrl("file:example.jar!/");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm()).isEqualTo("jar:file:example.jar!/entry.txt");
	}

	@Test
	public void parseUrlWithDirectoryEntryContextAndAbsoluteSpecThatUsesContext()
			throws MalformedURLException {
		String spec = "/entry.txt";
		URL context = createUrl("file:example.jar!/dir/");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm()).isEqualTo("jar:file:example.jar!/entry.txt");
	}

	@Test
	public void parseUrlWithJarRootContextAndRelativeSpecThatUsesContext()
			throws MalformedURLException {
		String spec = "entry.txt";
		URL context = createUrl("file:example.jar!/");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm()).isEqualTo("jar:file:example.jar!/entry.txt");
	}

	@Test
	public void parseUrlWithDirectoryEntryContextAndRelativeSpecThatUsesContext()
			throws MalformedURLException {
		String spec = "entry.txt";
		URL context = createUrl("file:example.jar!/dir/");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm())
				.isEqualTo("jar:file:example.jar!/dir/entry.txt");
	}

	@Test
	public void parseUrlWithFileEntryContextAndRelativeSpecThatUsesContext()
			throws MalformedURLException {
		String spec = "entry.txt";
		URL context = createUrl("file:example.jar!/dir/file");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm())
				.isEqualTo("jar:file:example.jar!/dir/entry.txt");
	}

	@Test
	public void parseUrlWithSpecThatIgnoresContext() throws MalformedURLException {
		JarFile.registerUrlProtocolHandler();
		String spec = "jar:file:/other.jar!/nested!/entry.txt";
		URL context = createUrl("file:example.jar!/dir/file");
		this.handler.parseURL(context, spec, 0, spec.length());
		assertThat(context.toExternalForm())
				.isEqualTo("jar:jar:file:/other.jar!/nested!/entry.txt");
	}

	@Test
	public void sameFileReturnsFalseForUrlsWithDifferentProtocols()
			throws MalformedURLException {
		assertThat(this.handler.sameFile(new URL("jar:file:foo.jar!/content.txt"),
				new URL("file:/foo.jar"))).isFalse();
	}

	@Test
	public void sameFileReturnsFalseForDifferentFileInSameJar()
			throws MalformedURLException {
		assertThat(this.handler.sameFile(
				new URL("jar:file:foo.jar!/the/path/to/the/first/content.txt"),
				new URL("jar:file:/foo.jar!/content.txt"))).isFalse();
	}

	@Test
	public void sameFileReturnsFalseForSameFileInDifferentJars()
			throws MalformedURLException {
		assertThat(this.handler.sameFile(
				new URL("jar:file:/the/path/to/the/first.jar!/content.txt"),
				new URL("jar:file:/second.jar!/content.txt"))).isFalse();
	}

	@Test
	public void sameFileReturnsTrueForSameFileInSameJar() throws MalformedURLException {
		assertThat(this.handler.sameFile(
				new URL("jar:file:/the/path/to/the/first.jar!/content.txt"),
				new URL("jar:file:/the/path/to/the/first.jar!/content.txt"))).isTrue();
	}

	@Test
	public void sameFileReturnsTrueForUrlsThatReferenceSameFileViaNestedArchiveAndFromRootOfJar()
			throws MalformedURLException {
		assertThat(this.handler.sameFile(
				new URL("jar:file:/test.jar!/BOOT-INF/classes!/foo.txt"),
				new URL("jar:file:/test.jar!/BOOT-INF/classes/foo.txt"))).isTrue();
	}

	@Test
	public void hashCodesAreEqualForUrlsThatReferenceSameFileViaNestedArchiveAndFromRootOfJar()
			throws MalformedURLException {
		assertThat(this.handler
				.hashCode(new URL("jar:file:/test.jar!/BOOT-INF/classes!/foo.txt")))
						.isEqualTo(this.handler.hashCode(
								new URL("jar:file:/test.jar!/BOOT-INF/classes/foo.txt")));
	}

	private URL createUrl(String file) throws MalformedURLException {
		return new URL("jar", null, -1, file, this.handler);
	}

}