/*
* 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.devtools.filewatch;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.concurrent.TimeUnit;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;
import org.springframework.util.FileCopyUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link FileSnapshot}.
*
* @author Phillip Webb
*/
public class FileSnapshotTests {
private static final long TWO_MINS = TimeUnit.MINUTES.toMillis(2);
private static final long MODIFIED = new Date().getTime()
- TimeUnit.DAYS.toMillis(10);
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Test
public void fileMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("File must not be null");
new FileSnapshot(null);
}
@Test
public void fileMustNotBeAFolder() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("File must not be a folder");
new FileSnapshot(this.temporaryFolder.newFolder());
}
@Test
public void equalsIfTheSame() throws Exception {
File file = createNewFile("abc", MODIFIED);
File fileCopy = new File(file, "x").getParentFile();
FileSnapshot snapshot1 = new FileSnapshot(file);
FileSnapshot snapshot2 = new FileSnapshot(fileCopy);
assertThat(snapshot1).isEqualTo(snapshot2);
assertThat(snapshot1.hashCode()).isEqualTo(snapshot2.hashCode());
}
@Test
public void notEqualsIfDeleted() throws Exception {
File file = createNewFile("abc", MODIFIED);
FileSnapshot snapshot1 = new FileSnapshot(file);
file.delete();
assertThat(snapshot1).isNotEqualTo(new FileSnapshot(file));
}
@Test
public void notEqualsIfLengthChanges() throws Exception {
File file = createNewFile("abc", MODIFIED);
FileSnapshot snapshot1 = new FileSnapshot(file);
setupFile(file, "abcd", MODIFIED);
assertThat(snapshot1).isNotEqualTo(new FileSnapshot(file));
}
@Test
public void notEqualsIfLastModifiedChanges() throws Exception {
File file = createNewFile("abc", MODIFIED);
FileSnapshot snapshot1 = new FileSnapshot(file);
setupFile(file, "abc", MODIFIED + TWO_MINS);
assertThat(snapshot1).isNotEqualTo(new FileSnapshot(file));
}
private File createNewFile(String content, long lastModified) throws IOException {
File file = this.temporaryFolder.newFile();
setupFile(file, content, lastModified);
return file;
}
private void setupFile(File file, String content, long lastModified)
throws IOException {
FileCopyUtils.copy(content.getBytes(), file);
file.setLastModified(lastModified);
}
}