forked from spring-projects/spring-framework
/
ResourceTests.java
340 lines (295 loc) · 12.6 KB
/
ResourceTests.java
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/*
* Copyright 2002-2020 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
*
* 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.springframework.core.io;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashSet;
import org.junit.jupiter.api.Test;
import org.springframework.util.FileCopyUtils;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.junit.jupiter.api.Assumptions.assumeTrue;
/**
* Unit tests for various {@link Resource} implementations.
*
* @author Juergen Hoeller
* @author Chris Beams
* @author Sam Brannen
* @since 09.09.2004
*/
class ResourceTests {
@Test
void byteArrayResource() throws IOException {
Resource resource = new ByteArrayResource("testString".getBytes());
assertThat(resource.exists()).isTrue();
assertThat(resource.isOpen()).isFalse();
String content = FileCopyUtils.copyToString(new InputStreamReader(resource.getInputStream()));
assertThat(content).isEqualTo("testString");
assertThat(new ByteArrayResource("testString".getBytes())).isEqualTo(resource);
}
@Test
void byteArrayResourceWithDescription() throws IOException {
Resource resource = new ByteArrayResource("testString".getBytes(), "my description");
assertThat(resource.exists()).isTrue();
assertThat(resource.isOpen()).isFalse();
String content = FileCopyUtils.copyToString(new InputStreamReader(resource.getInputStream()));
assertThat(content).isEqualTo("testString");
assertThat(resource.getDescription().contains("my description")).isTrue();
assertThat(new ByteArrayResource("testString".getBytes())).isEqualTo(resource);
}
@Test
void inputStreamResource() throws IOException {
InputStream is = new ByteArrayInputStream("testString".getBytes());
Resource resource = new InputStreamResource(is);
assertThat(resource.exists()).isTrue();
assertThat(resource.isOpen()).isTrue();
String content = FileCopyUtils.copyToString(new InputStreamReader(resource.getInputStream()));
assertThat(content).isEqualTo("testString");
assertThat(new InputStreamResource(is)).isEqualTo(resource);
}
@Test
void inputStreamResourceWithDescription() throws IOException {
InputStream is = new ByteArrayInputStream("testString".getBytes());
Resource resource = new InputStreamResource(is, "my description");
assertThat(resource.exists()).isTrue();
assertThat(resource.isOpen()).isTrue();
String content = FileCopyUtils.copyToString(new InputStreamReader(resource.getInputStream()));
assertThat(content).isEqualTo("testString");
assertThat(resource.getDescription().contains("my description")).isTrue();
assertThat(new InputStreamResource(is)).isEqualTo(resource);
}
@Test
void classPathResource() throws IOException {
Resource resource = new ClassPathResource("org/springframework/core/io/Resource.class");
doTestResource(resource);
Resource resource2 = new ClassPathResource("org/springframework/core/../core/io/./Resource.class");
assertThat(resource2).isEqualTo(resource);
Resource resource3 = new ClassPathResource("org/springframework/core/").createRelative("../core/io/./Resource.class");
assertThat(resource3).isEqualTo(resource);
// Check whether equal/hashCode works in a HashSet.
HashSet<Resource> resources = new HashSet<>();
resources.add(resource);
resources.add(resource2);
assertThat(resources.size()).isEqualTo(1);
}
@Test
void classPathResourceWithClassLoader() throws IOException {
Resource resource =
new ClassPathResource("org/springframework/core/io/Resource.class", getClass().getClassLoader());
doTestResource(resource);
assertThat(new ClassPathResource("org/springframework/core/../core/io/./Resource.class", getClass().getClassLoader())).isEqualTo(resource);
}
@Test
void classPathResourceWithClass() throws IOException {
Resource resource = new ClassPathResource("Resource.class", getClass());
doTestResource(resource);
assertThat(new ClassPathResource("Resource.class", getClass())).isEqualTo(resource);
}
@Test
void fileSystemResource() throws IOException {
String file = getClass().getResource("Resource.class").getFile();
Resource resource = new FileSystemResource(file);
doTestResource(resource);
assertThat(resource).isEqualTo(new FileSystemResource(file));
}
@Test
void fileSystemResourceWithFile() throws IOException {
File file = new File(getClass().getResource("Resource.class").getFile());
Resource resource = new FileSystemResource(file);
doTestResource(resource);
assertThat(resource).isEqualTo(new FileSystemResource(file));
}
@Test
void fileSystemResourceWithFilePath() throws Exception {
Path filePath = Paths.get(getClass().getResource("Resource.class").toURI());
Resource resource = new FileSystemResource(filePath);
doTestResource(resource);
assertThat(resource).isEqualTo(new FileSystemResource(filePath));
}
@Test
void fileSystemResourceWithPlainPath() {
Resource resource = new FileSystemResource("core/io/Resource.class");
assertThat(new FileSystemResource("core/../core/io/./Resource.class")).isEqualTo(resource);
}
@Test
void urlResource() throws IOException {
Resource resource = new UrlResource(getClass().getResource("Resource.class"));
doTestResource(resource);
assertThat(resource).isEqualTo(new UrlResource(getClass().getResource("Resource.class")));
Resource resource2 = new UrlResource("file:core/io/Resource.class");
assertThat(new UrlResource("file:core/../core/io/./Resource.class")).isEqualTo(resource2);
assertThat(new UrlResource("file:/dir/test.txt?argh").getFilename()).isEqualTo("test.txt");
assertThat(new UrlResource("file:\\dir\\test.txt?argh").getFilename()).isEqualTo("test.txt");
assertThat(new UrlResource("file:\\dir/test.txt?argh").getFilename()).isEqualTo("test.txt");
}
private void doTestResource(Resource resource) throws IOException {
assertThat(resource.getFilename()).isEqualTo("Resource.class");
assertThat(resource.getURL().getFile().endsWith("Resource.class")).isTrue();
assertThat(resource.exists()).isTrue();
assertThat(resource.isReadable()).isTrue();
assertThat(resource.contentLength() > 0).isTrue();
assertThat(resource.lastModified() > 0).isTrue();
Resource relative1 = resource.createRelative("ClassPathResource.class");
assertThat(relative1.getFilename()).isEqualTo("ClassPathResource.class");
assertThat(relative1.getURL().getFile().endsWith("ClassPathResource.class")).isTrue();
assertThat(relative1.exists()).isTrue();
assertThat(relative1.isReadable()).isTrue();
assertThat(relative1.contentLength() > 0).isTrue();
assertThat(relative1.lastModified() > 0).isTrue();
Resource relative2 = resource.createRelative("support/ResourcePatternResolver.class");
assertThat(relative2.getFilename()).isEqualTo("ResourcePatternResolver.class");
assertThat(relative2.getURL().getFile().endsWith("ResourcePatternResolver.class")).isTrue();
assertThat(relative2.exists()).isTrue();
assertThat(relative2.isReadable()).isTrue();
assertThat(relative2.contentLength() > 0).isTrue();
assertThat(relative2.lastModified() > 0).isTrue();
Resource relative3 = resource.createRelative("../SpringVersion.class");
assertThat(relative3.getFilename()).isEqualTo("SpringVersion.class");
assertThat(relative3.getURL().getFile().endsWith("SpringVersion.class")).isTrue();
assertThat(relative3.exists()).isTrue();
assertThat(relative3.isReadable()).isTrue();
assertThat(relative3.contentLength() > 0).isTrue();
assertThat(relative3.lastModified() > 0).isTrue();
Resource relative4 = resource.createRelative("X.class");
assertThat(relative4.exists()).isFalse();
assertThat(relative4.isReadable()).isFalse();
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(
relative4::contentLength);
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(
relative4::lastModified);
}
@Test
void classPathResourceWithRelativePath() throws IOException {
Resource resource = new ClassPathResource("dir/");
Resource relative = resource.createRelative("subdir");
assertThat(relative).isEqualTo(new ClassPathResource("dir/subdir"));
}
@Test
void fileSystemResourceWithRelativePath() throws IOException {
Resource resource = new FileSystemResource("dir/");
Resource relative = resource.createRelative("subdir");
assertThat(relative).isEqualTo(new FileSystemResource("dir/subdir"));
}
@Test
void urlResourceWithRelativePath() throws IOException {
Resource resource = new UrlResource("file:dir/");
Resource relative = resource.createRelative("subdir");
assertThat(relative).isEqualTo(new UrlResource("file:dir/subdir"));
}
@Test
void nonFileResourceExists() throws Exception {
URL url = new URL("https://spring.io/");
// Abort if spring.io is not reachable.
assumeTrue(urlIsReachable(url));
Resource resource = new UrlResource(url);
assertThat(resource.exists()).isTrue();
}
private boolean urlIsReachable(URL url) {
try {
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("HEAD");
connection.setReadTimeout(5_000);
return connection.getResponseCode() == HttpURLConnection.HTTP_OK;
}
catch (Exception ex) {
return false;
}
}
@Test
void abstractResourceExceptions() throws Exception {
final String name = "test-resource";
Resource resource = new AbstractResource() {
@Override
public String getDescription() {
return name;
}
@Override
public InputStream getInputStream() throws IOException {
throw new FileNotFoundException();
}
};
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(
resource::getURL)
.withMessageContaining(name);
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(
resource::getFile)
.withMessageContaining(name);
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(() ->
resource.createRelative("/testing"))
.withMessageContaining(name);
assertThat(resource.getFilename()).isNull();
}
@Test
void contentLength() throws IOException {
AbstractResource resource = new AbstractResource() {
@Override
public InputStream getInputStream() {
return new ByteArrayInputStream(new byte[] { 'a', 'b', 'c' });
}
@Override
public String getDescription() {
return "";
}
};
assertThat(resource.contentLength()).isEqualTo(3L);
}
@Test
void readableChannel() throws IOException {
Resource resource = new FileSystemResource(getClass().getResource("Resource.class").getFile());
try (ReadableByteChannel channel = resource.readableChannel()) {
ByteBuffer buffer = ByteBuffer.allocate((int) resource.contentLength());
channel.read(buffer);
buffer.rewind();
assertThat(buffer.limit() > 0).isTrue();
}
}
@Test
void inputStreamNotFoundOnFileSystemResource() throws IOException {
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(() ->
new FileSystemResource(getClass().getResource("Resource.class").getFile()).createRelative("X").getInputStream());
}
@Test
void readableChannelNotFoundOnFileSystemResource() throws IOException {
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(() ->
new FileSystemResource(getClass().getResource("Resource.class").getFile()).createRelative("X").readableChannel());
}
@Test
void inputStreamNotFoundOnClassPathResource() throws IOException {
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(() ->
new ClassPathResource("Resource.class", getClass()).createRelative("X").getInputStream());
}
@Test
void readableChannelNotFoundOnClassPathResource() throws IOException {
assertThatExceptionOfType(FileNotFoundException.class).isThrownBy(() ->
new ClassPathResource("Resource.class", getClass()).createRelative("X").readableChannel());
}
@Test
void fileUrlResourceTest() throws IOException {
assertThatIllegalArgumentException().isThrownBy(() -> {
new FileUrlResource(new URL("https://spring.io/"));
});
}
}