/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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 com.asakusafw.runtime.io.util;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
/**
* Test for {@link TemporaryFileInstaller}.
*/
public class TemporaryFileInstallerTest {
/**
* temporary folder for testing.
*/
@Rule
public final TemporaryFolder temporary = new TemporaryFolder();
/**
* simple case.
* @throws Exception if failed
*/
@Test
public void simple() throws Exception {
byte[] contents = { 1, 2, 3 };
File f = temporary.newFile();
TemporaryFileInstaller installer = create(false, contents);
assertThat(installer.install(f, true), is(true));
check(f, contents);
}
/**
* reuse file.
* @throws Exception if failed
*/
@Test
public void reuse() throws Exception {
byte[] contents = { 1, 2, 3 };
File f = temporary.newFile();
TemporaryFileInstaller installer = create(false, contents);
assertThat(installer.install(f, true), is(true));
assertThat(installer.install(f, true), is(false));
check(f, contents);
}
/**
* don't reuse different files.
* @throws Exception if failed
*/
@Test
public void reuse_update() throws Exception {
byte[] c0 = { 1, 2, 3 };
byte[] c1 = { 1, 2, 4 };
File f = temporary.newFile();
TemporaryFileInstaller i0 = create(false, c0);
TemporaryFileInstaller i1 = create(false, c1);
assertThat(i0.install(f, true), is(true));
assertThat(i0.install(f, true), is(false));
check(f, c0);
assertThat(i1.install(f, true), is(true));
assertThat(i1.install(f, true), is(false));
check(f, c1);
}
/**
* denies reusing files.
* @throws Exception if failed
*/
@Test
public void reuse_deny() throws Exception {
byte[] contents = { 1, 2, 3 };
File f = temporary.newFile();
TemporaryFileInstaller installer = create(false, contents);
assertThat(installer.install(f, false), is(true));
assertThat(installer.install(f, false), is(true));
check(f, contents);
}
private TemporaryFileInstaller create(boolean exec, byte... bytes) throws IOException {
return TemporaryFileInstaller.newInstance(new ByteArrayInputStream(bytes), exec);
}
private void check(File f, byte[] contents) throws IOException {
ByteArrayOutputStream buf = new ByteArrayOutputStream();
try (InputStream in = new FileInputStream(f)) {
byte[] b = new byte[256];
while (true) {
int read = in.read(b);
if (read < 0) {
break;
}
buf.write(b, 0, read);
}
}
assertThat(buf.toByteArray(), equalTo(contents));
}
}