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StatisticalBufTest.java
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StatisticalBufTest.java
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/*-
* #%L
* rapidoid-networking
* %%
* Copyright (C) 2014 - 2018 Nikolche Mihajlovski and contributors
* %%
* 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.
* #L%
*/
package org.rapidoid.buffer;
import org.junit.Test;
import org.rapidoid.annotation.Authors;
import org.rapidoid.annotation.Since;
import org.rapidoid.commons.Err;
import org.rapidoid.test.TestRnd;
@Authors("Nikolche Mihajlovski")
@Since("2.0.0")
public class StatisticalBufTest extends BufferTestCommons {
@Test
public void shouldExpandAndShrink() {
BufGroup bufs = new BufGroup(4);
Buf buf = bufs.newBuf("");
String copy = "";
String s;
for (int i = 0; i < 1000; i++) {
if (TestRnd.rnd(3) > 0 || copy.isEmpty()) {
s = TestRnd.rndStr(0, 9);
buf.append(s);
copy += s;
} else {
int len = TestRnd.rnd(Math.min(17, copy.length() + 1));
switch (TestRnd.rnd(3)) {
case 0:
copy = copy.substring(len);
buf.deleteBefore(len);
break;
case 1:
copy = copy.substring(0, copy.length() - len);
buf.deleteLast(len);
break;
case 2:
s = TestRnd.rndStr(0, len);
int maxPos = copy.length() - s.length();
assert maxPos >= 0;
int pos = TestRnd.rnd(maxPos + 1); // range [0..maxPos]
copy = copy.substring(0, pos) + s + copy.substring(pos + s.length());
buf.put(pos, s.getBytes(), 0, s.length());
break;
default:
throw Err.notExpected();
}
}
if (TestRnd.rnd(1000) == 0) {
copy = "";
buf.clear();
}
eq(buf, copy);
}
}
}