/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 tests.api.java.nio.charset;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargetNew;
import dalvik.annotation.TestTargets;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CoderResult;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.UnsupportedCharsetException;
@TestTargetClass(CharsetDecoder.class)
/**
* API unit test for java.nio.charset.CharsetDecoder
*/
public class CharsetDecoderTest extends AbstractCharsetDecoderTestCase {
protected static final int MAX_BYTES = 3;
protected static final double AVER_BYTES = 0.5;
protected void setUp() throws Exception {
cs = new CharsetEncoderTest.MockCharset("mock", new String[0]);
unibytes = new byte[] { 32, 98, 117, 102, 102, 101, 114 };
super.setUp();
}
/*
* test constructor
*/
@TestTargets({
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "CharsetDecoder",
args = {java.nio.charset.Charset.class, float.class, float.class}
),
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "charset",
args = {}
),
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "averageCharsPerByte",
args = {}
),
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "maxCharsPerByte",
args = {}
)
})
public void testCharsetDecoder() {
// default value
decoder = new MockCharsetDecoder(cs, (float) AVER_BYTES, MAX_BYTES);
// normal case
CharsetDecoder ec = new MockCharsetDecoder(cs, 1, MAX_BYTES);
assertSame(ec.charset(), cs);
assertEquals(1.0, ec.averageCharsPerByte(), 0.0);
assertTrue(ec.maxCharsPerByte() == MAX_BYTES);
/*
* ------------------------ Exceptional cases -------------------------
*/
// Normal case: null charset
ec = new MockCharsetDecoder(null, 1, MAX_BYTES);
assertNull(ec.charset());
assertEquals(1.0, ec.averageCharsPerByte(), 0.0);
assertTrue(ec.maxCharsPerByte() == MAX_BYTES);
ec = new MockCharsetDecoder(new CharsetEncoderTest.MockCharset("mock",
new String[0]), 1, MAX_BYTES);
// Commented out since the comment is wrong since MAX_BYTES > 1
// // OK: average length less than max length
// ec = new MockCharsetDecoder(cs, MAX_BYTES, 1);
// assertTrue(ec.averageCharsPerByte() == MAX_BYTES);
// assertTrue(ec.maxCharsPerByte() == 1);
// Illegal Argument: zero length
try {
ec = new MockCharsetDecoder(cs, 0, MAX_BYTES);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
}
try {
ec = new MockCharsetDecoder(cs, 1, 0);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
}
// Illegal Argument: negative length
try {
ec = new MockCharsetDecoder(cs, -1, MAX_BYTES);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
}
try {
ec = new MockCharsetDecoder(cs, 1, -1);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
}
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "implFlush",
args = {java.nio.CharBuffer.class}
)
public void testImplFlush() {
decoder = new MockCharsetDecoder(cs, 1, 3);
assertEquals(CoderResult.UNDERFLOW, ((MockCharsetDecoder) decoder)
.pubImplFlush(null));
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "implOnMalformedInput",
args = {java.nio.charset.CodingErrorAction.class}
)
public void testImplOnMalformedInput() {
decoder = new MockCharsetDecoder(cs, 1, 3);
assertEquals(CoderResult.UNDERFLOW, ((MockCharsetDecoder) decoder)
.pubImplFlush(null));
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "implOnUnmappableCharacter",
args = {java.nio.charset.CodingErrorAction.class}
)
public void testImplOnUnmappableCharacter() {
decoder = new MockCharsetDecoder(cs, 1, 3);
((MockCharsetDecoder) decoder).pubImplOnUnmappableCharacter(null);
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "implReplaceWith",
args = {java.lang.String.class}
)
public void testImplReplaceWith() {
decoder = new MockCharsetDecoder(cs, 1, 3);
((MockCharsetDecoder) decoder).pubImplReplaceWith(null);
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "implReset",
args = {}
)
public void testImplReset() {
decoder = new MockCharsetDecoder(cs, 1, 3);
((MockCharsetDecoder) decoder).pubImplReset();
}
boolean deCodeLoopCalled = false;
@TestTargetNew(
level = TestLevel.SUFFICIENT,
notes = "",
method = "decodeLoop",
args = { ByteBuffer.class, CharBuffer.class}
)
public void testEncodeLoop() throws Exception {
try {
decoder = new MockCharsetDecoder(Charset.forName("US-ASCII"), 1,
MAX_BYTES) {
@Override
protected CoderResult decodeLoop(ByteBuffer in, CharBuffer out) {
deCodeLoopCalled = true;
return super.decodeLoop(in, out);
}
};
decoder.decode(ByteBuffer.wrap(new byte[]{ 'a','b','c'}));
} catch (UnsupportedCharsetException e) {
fail("us-ascii not supported");
}
assertTrue(deCodeLoopCalled);
}
/*
* mock decoder
*/
public static class MockCharsetDecoder extends CharsetDecoder {
public MockCharsetDecoder(Charset cs, float ave, float max) {
super(cs, ave, max);
}
protected CoderResult decodeLoop(ByteBuffer in, CharBuffer out) {
int inPosition = in.position();
byte[] input = new byte[in.remaining()];
in.get(input);
String result = new String(input);
if (result.startsWith("malform")) {
// reset the cursor to the error position
in.position(inPosition + "malform".length());
// set the error length
return CoderResult.malformedForLength("malform".length());
} else if (result.startsWith("unmap")) {
// reset the cursor to the error position
in.position(inPosition);
// set the error length
return CoderResult.unmappableForLength("unmap".length());
} else if (result.startsWith("runtime")) {
// reset the cursor to the error position
in.position(0);
// set the error length
throw new RuntimeException("runtime");
}
int inLeft = input.length;
int outLeft = out.remaining();
CoderResult r = CoderResult.UNDERFLOW;
int length = inLeft;
if (outLeft < inLeft) {
r = CoderResult.OVERFLOW;
length = outLeft;
in.position(inPosition + outLeft);
}
for (int i = 0; i < length; i++) {
out.put((char) input[i]);
}
return r;
}
protected CoderResult implFlush(CharBuffer out) {
CoderResult result = super.implFlush(out);
if (out.remaining() >= 5) {
// TODO
// out.put("flush");
result = CoderResult.UNDERFLOW;
} else {
// out.put("flush", 0, out.remaining());
result = CoderResult.OVERFLOW;
}
return result;
}
public CoderResult pubImplFlush(CharBuffer out) {
return super.implFlush(out);
}
public void pubImplOnMalformedInput(CodingErrorAction newAction) {
super.implOnMalformedInput(newAction);
}
public void pubImplOnUnmappableCharacter(CodingErrorAction newAction) {
super.implOnUnmappableCharacter(newAction);
}
public void pubImplReplaceWith(String newReplacement) {
super.implReplaceWith(newReplacement);
}
public void pubImplReset() {
super.implReset();
}
}
}
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