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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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 org.elasticsearch.common;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.test.ESTestCase;
import static org.hamcrest.Matchers.containsString;
public class StringsTests extends ESTestCase {
public void testSubstring() {
assertEquals(null, Strings.substring(null, 0, 1000));
assertEquals("foo", Strings.substring("foo", 0, 1000));
assertEquals("foo", Strings.substring("foo", 0, 3));
assertEquals("oo", Strings.substring("foo", 1, 3));
assertEquals("oo", Strings.substring("foo", 1, 100));
assertEquals("f", Strings.substring("foo", 0, 1));
}
public void testCleanTruncate() {
assertEquals(null, Strings.cleanTruncate(null, 10));
assertEquals("foo", Strings.cleanTruncate("foo", 10));
assertEquals("foo", Strings.cleanTruncate("foo", 3));
// Throws out high surrogates
assertEquals("foo", Strings.cleanTruncate("foo\uD83D\uDEAB", 4));
// But will keep the whole character
assertEquals("foo\uD83D\uDEAB", Strings.cleanTruncate("foo\uD83D\uDEAB", 5));
/*
* Doesn't take care around combining marks. This example has its
* meaning changed because that last codepoint is supposed to combine
* backwards into the find "o" and be represented as the "o" with a
* circle around it with a slash through it. As in "no 'o's allowed
* here.
*/
assertEquals("o", Strings.cleanTruncate("o\uD83D\uDEAB", 1));
assertEquals("", Strings.cleanTruncate("foo", 0));
}
public void testToStringToXContent() {
final ToXContent toXContent;
final boolean error;
if (randomBoolean()) {
if (randomBoolean()) {
error = false;
toXContent = (builder, params) -> builder.field("ok", "here").field("catastrophe", "");
} else {
error = true;
toXContent = (builder, params) ->
builder.startObject().field("ok", "here").field("catastrophe", "").endObject();
}
} else {
if (randomBoolean()) {
error = false;
toXContent = (ToXContentObject) (builder, params) ->
builder.startObject().field("ok", "here").field("catastrophe", "").endObject();
} else {
error = true;
toXContent = (ToXContentObject) (builder, params) -> builder.field("ok", "here").field("catastrophe", "");
}
}
String toString = Strings.toString(toXContent);
if (error) {
assertThat(toString, containsString("Error building toString out of XContent"));
} else {
assertThat(toString, containsString("\"ok\":\"here\""));
assertThat(toString, containsString("\"catastrophe\":\"\""));
}
}
public void testSplitStringToSet() {
assertEquals(Strings.splitStringByCommaToSet(null), Sets.newHashSet());
assertEquals(Strings.splitStringByCommaToSet(""), Sets.newHashSet());
assertEquals(Strings.splitStringByCommaToSet("a,b,c"), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringByCommaToSet("a, b, c"), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringByCommaToSet(" a , b, c "), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringByCommaToSet("aa, bb, cc"), Sets.newHashSet("aa","bb","cc"));
assertEquals(Strings.splitStringByCommaToSet(" a "), Sets.newHashSet("a"));
assertEquals(Strings.splitStringByCommaToSet(" a "), Sets.newHashSet("a"));
assertEquals(Strings.splitStringByCommaToSet(" aa "), Sets.newHashSet("aa"));
assertEquals(Strings.splitStringByCommaToSet(" "), Sets.newHashSet());
assertEquals(Strings.splitStringToSet(null, ' '), Sets.newHashSet());
assertEquals(Strings.splitStringToSet("", ' '), Sets.newHashSet());
assertEquals(Strings.splitStringToSet("a b c", ' '), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringToSet("a, b, c", ' '), Sets.newHashSet("a,","b,","c"));
assertEquals(Strings.splitStringToSet(" a b c ", ' '), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringToSet(" a b c ", ' '), Sets.newHashSet("a","b","c"));
assertEquals(Strings.splitStringToSet("aa bb cc", ' '), Sets.newHashSet("aa","bb","cc"));
assertEquals(Strings.splitStringToSet(" a ", ' '), Sets.newHashSet("a"));
assertEquals(Strings.splitStringToSet(" a ", ' '), Sets.newHashSet("a"));
assertEquals(Strings.splitStringToSet(" a ", ' '), Sets.newHashSet("a"));
assertEquals(Strings.splitStringToSet("a ", ' '), Sets.newHashSet("a"));
assertEquals(Strings.splitStringToSet(" aa ", ' '), Sets.newHashSet("aa"));
assertEquals(Strings.splitStringToSet("aa ", ' '), Sets.newHashSet("aa"));
assertEquals(Strings.splitStringToSet(" ", ' '), Sets.newHashSet());
}
}
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