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* 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
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package org.elasticsearch.common.unit;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.test.ESTestCase;
import java.io.IOException;
import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder;
import static org.hamcrest.CoreMatchers.anyOf;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.sameInstance;
public class FuzzinessTests extends ESTestCase {
public void testNumerics() {
String[] options = new String[]{"1.0", "1", "1.000000"};
assertThat(Fuzziness.build(randomFrom(options)).asFloat(), equalTo(1f));
}
public void testParseFromXContent() throws IOException {
final int iters = randomIntBetween(10, 50);
for (int i = 0; i < iters; i++) {
{
float floatValue = randomFloat();
XContentBuilder json = jsonBuilder().startObject()
.field(Fuzziness.X_FIELD_NAME, floatValue)
.endObject();
XContentParser parser = createParser(json);
assertThat(parser.nextToken(), equalTo(XContentParser.Token.START_OBJECT));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.FIELD_NAME));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.VALUE_NUMBER));
Fuzziness parse = Fuzziness.parse(parser);
assertThat(parse.asFloat(), equalTo(floatValue));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.END_OBJECT));
}
{
Integer intValue = frequently() ? randomIntBetween(0, 2) : randomIntBetween(0, 100);
Float floatRep = randomFloat();
Number value = intValue;
if (randomBoolean()) {
value = new Float(floatRep += intValue);
}
XContentBuilder json = jsonBuilder().startObject()
.field(Fuzziness.X_FIELD_NAME, randomBoolean() ? value.toString() : value)
.endObject();
XContentParser parser = createParser(json);
assertThat(parser.nextToken(), equalTo(XContentParser.Token.START_OBJECT));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.FIELD_NAME));
assertThat(parser.nextToken(), anyOf(equalTo(XContentParser.Token.VALUE_NUMBER), equalTo(XContentParser.Token.VALUE_STRING)));
Fuzziness parse = Fuzziness.parse(parser);
if (value.intValue() >= 1) {
assertThat(parse.asDistance(), equalTo(Math.min(2, value.intValue())));
}
assertThat(parser.nextToken(), equalTo(XContentParser.Token.END_OBJECT));
if (intValue.equals(value)) {
switch (intValue) {
case 1:
assertThat(parse, sameInstance(Fuzziness.ONE));
break;
case 2:
assertThat(parse, sameInstance(Fuzziness.TWO));
break;
case 0:
assertThat(parse, sameInstance(Fuzziness.ZERO));
break;
default:
break;
}
}
}
{
XContentBuilder json;
if (randomBoolean()) {
json = Fuzziness.AUTO.toXContent(jsonBuilder().startObject(), null).endObject();
} else {
json = jsonBuilder().startObject()
.field(Fuzziness.X_FIELD_NAME, randomBoolean() ? "AUTO" : "auto")
.endObject();
}
XContentParser parser = createParser(json);
assertThat(parser.nextToken(), equalTo(XContentParser.Token.START_OBJECT));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.FIELD_NAME));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.VALUE_STRING));
Fuzziness parse = Fuzziness.parse(parser);
assertThat(parse, sameInstance(Fuzziness.AUTO));
assertThat(parser.nextToken(), equalTo(XContentParser.Token.END_OBJECT));
}
}
}
public void testAuto() {
assertThat(Fuzziness.AUTO.asFloat(), equalTo(1f));
}
public void testAsDistance() {
final int iters = randomIntBetween(10, 50);
for (int i = 0; i < iters; i++) {
Integer integer = Integer.valueOf(randomIntBetween(0, 10));
String value = "" + (randomBoolean() ? integer.intValue() : integer.floatValue());
assertThat(Fuzziness.build(value).asDistance(), equalTo(Math.min(2, integer.intValue())));
}
}
public void testSerialization() throws IOException {
Fuzziness fuzziness = Fuzziness.AUTO;
Fuzziness deserializedFuzziness = doSerializeRoundtrip(fuzziness);
assertEquals(fuzziness, deserializedFuzziness);
fuzziness = Fuzziness.fromEdits(randomIntBetween(0, 2));
deserializedFuzziness = doSerializeRoundtrip(fuzziness);
assertEquals(fuzziness, deserializedFuzziness);
}
public void testSerializationAuto() throws IOException {
Fuzziness fuzziness = Fuzziness.AUTO;
Fuzziness deserializedFuzziness = doSerializeRoundtrip(fuzziness);
assertEquals(fuzziness, deserializedFuzziness);
assertEquals(fuzziness.asFloat(), deserializedFuzziness.asFloat(), 0f);
}
private static Fuzziness doSerializeRoundtrip(Fuzziness in) throws IOException {
BytesStreamOutput output = new BytesStreamOutput();
in.writeTo(output);
StreamInput streamInput = output.bytes().streamInput();
return new Fuzziness(streamInput);
}
}