/*
* Copyright 2009 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.gradle.api.internal.file.copy;
import com.google.common.io.ByteStreams;
import org.apache.commons.io.IOUtils;
import org.gradle.util.TestUtil;
import org.gradle.util.WrapUtil;
import org.junit.Test;
import java.io.*;
import static org.gradle.util.WrapUtil.*;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
public class FilterChainTest {
private final FilterChain filterChain = new FilterChain();
private final Reader originalReader = new StringReader("string");
@Test
public void usesOriginalReaderByDefault() {
assertThat(filterChain.transform(originalReader), sameInstance(originalReader));
}
@Test
public void canAddFilterReaderToEndOfChain() {
filterChain.add(TestFilterReader.class);
Reader transformedReader = filterChain.transform(originalReader);
assertThat(transformedReader, instanceOf(TestFilterReader.class));
TestFilterReader reader = (TestFilterReader) transformedReader;
assertThat(reader.getIn(), sameInstance(originalReader));
}
@Test
public void canAddFilterReaderWithParametersToEndOfChain() {
filterChain.add(TestFilterReader.class, toMap("property", "value"));
Reader transformedReader = filterChain.transform(originalReader);
assertThat(transformedReader, instanceOf(TestFilterReader.class));
TestFilterReader reader = (TestFilterReader) transformedReader;
assertThat(reader.getIn(), sameInstance(originalReader));
assertThat(reader.property, equalTo("value"));
}
@Test
public void canAddLineFilterReaderToEndOfChain() {
filterChain.add(TestUtil.TEST_CLOSURE);
Reader transformedReader = filterChain.transform(originalReader);
assertThat(transformedReader, instanceOf(LineFilter.class));
}
@Test
public void canAddExpandFilterToEndOfChain() throws IOException {
filterChain.expand(WrapUtil.toMap("prop", 1));
Reader transformedReader = filterChain.transform(new StringReader("[$prop][${prop+1}][<%= prop+2 %>]"));
assertThat(IOUtils.toString(transformedReader), equalTo("[1][2][3]"));
}
@Test
public void canFilterUsingISO88591() throws IOException {
canFilterUsingCharset("ISO_8859_1");
}
@Test
public void canFilterUsingUTF8() throws IOException {
canFilterUsingCharset("UTF8");
}
private void canFilterUsingCharset(String charset) throws IOException {
FilterChain filterChainWithCharset = new FilterChain(charset);
filterChainWithCharset.expand(WrapUtil.toMap("prop", 1));
byte[] source = "éàüî $prop".getBytes(charset);
InputStream transformedInputStream = filterChainWithCharset.transform(new ByteArrayInputStream(source));
String actualResult = new String(ByteStreams.toByteArray(transformedInputStream), charset);
String expectedResult = "éàüî 1";
assertThat(actualResult, equalTo(expectedResult));
}
public static class TestFilterReader extends FilterReader {
String property;
public TestFilterReader(Reader reader) {
super(reader);
}
public Reader getIn() {
return in;
}
public void setProperty(String property) {
this.property = property;
}
}
}