/*
* 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 org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;
import org.springframework.boot.devtools.filewatch.ChangedFile.Type;
import org.springframework.util.FileCopyUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link FolderSnapshot}.
*
* @author Phillip Webb
*/
public class FolderSnapshotTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
private File folder;
private FolderSnapshot initialSnapshot;
@Before
public void setup() throws Exception {
this.folder = createTestFolderStructure();
this.initialSnapshot = new FolderSnapshot(this.folder);
}
@Test
public void folderMustNotBeNull() {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Folder must not be null");
new FolderSnapshot(null);
}
@Test
public void folderMustNotBeFile() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Folder must not be a file");
new FolderSnapshot(this.temporaryFolder.newFile());
}
@Test
public void equalsWhenNothingHasChanged() throws Exception {
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
assertThat(this.initialSnapshot).isEqualTo(updatedSnapshot);
assertThat(this.initialSnapshot.hashCode()).isEqualTo(updatedSnapshot.hashCode());
}
@Test
public void notEqualsWhenAFileIsAdded() throws Exception {
new File(new File(this.folder, "folder1"), "newfile").createNewFile();
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
assertThat(this.initialSnapshot).isNotEqualTo(updatedSnapshot);
}
@Test
public void notEqualsWhenAFileIsDeleted() throws Exception {
new File(new File(this.folder, "folder1"), "file1").delete();
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
assertThat(this.initialSnapshot).isNotEqualTo(updatedSnapshot);
}
@Test
public void notEqualsWhenAFileIsModified() throws Exception {
File file1 = new File(new File(this.folder, "folder1"), "file1");
FileCopyUtils.copy("updatedcontent".getBytes(), file1);
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
assertThat(this.initialSnapshot).isNotEqualTo(updatedSnapshot);
}
@Test
public void getChangedFilesSnapshotMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Snapshot must not be null");
this.initialSnapshot.getChangedFiles(null, null);
}
@Test
public void getChangedFilesSnapshotMustBeTheSameSourceFolder() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Snapshot source folder must be '" + this.folder + "'");
this.initialSnapshot
.getChangedFiles(new FolderSnapshot(createTestFolderStructure()), null);
}
@Test
public void getChangedFilesWhenNothingHasChanged() throws Exception {
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
this.initialSnapshot.getChangedFiles(updatedSnapshot, null);
}
@Test
public void getChangedFilesWhenAFileIsAddedAndDeletedAndChanged() throws Exception {
File folder1 = new File(this.folder, "folder1");
File file1 = new File(folder1, "file1");
File file2 = new File(folder1, "file2");
File newFile = new File(folder1, "newfile");
FileCopyUtils.copy("updatedcontent".getBytes(), file1);
file2.delete();
newFile.createNewFile();
FolderSnapshot updatedSnapshot = new FolderSnapshot(this.folder);
ChangedFiles changedFiles = this.initialSnapshot.getChangedFiles(updatedSnapshot,
null);
assertThat(changedFiles.getSourceFolder()).isEqualTo(this.folder);
assertThat(getChangedFile(changedFiles, file1).getType()).isEqualTo(Type.MODIFY);
assertThat(getChangedFile(changedFiles, file2).getType()).isEqualTo(Type.DELETE);
assertThat(getChangedFile(changedFiles, newFile).getType()).isEqualTo(Type.ADD);
}
private ChangedFile getChangedFile(ChangedFiles changedFiles, File file) {
for (ChangedFile changedFile : changedFiles) {
if (changedFile.getFile().equals(file)) {
return changedFile;
}
}
return null;
}
private File createTestFolderStructure() throws IOException {
File root = this.temporaryFolder.newFolder();
File folder1 = new File(root, "folder1");
folder1.mkdirs();
FileCopyUtils.copy("abc".getBytes(), new File(folder1, "file1"));
FileCopyUtils.copy("abc".getBytes(), new File(folder1, "file2"));
return root;
}
}