60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
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package zutil.benchmark;
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import com.carrotsearch.junitbenchmarks.BenchmarkOptions;
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import com.carrotsearch.junitbenchmarks.BenchmarkRule;
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import org.junit.Rule;
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import org.junit.Test;
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import java.util.ArrayList;
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import java.util.regex.Pattern;
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import static org.junit.Assert.assertEquals;
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/**
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* Created by Ziver on 2016-07-07.
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*/
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public class StringSplitBenchmark {
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public static final int TEST_EXECUTIONS = 200000;
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@Rule
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public BenchmarkRule benchmarkRun = new BenchmarkRule();
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private static String delimiter = ",";
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private static String str = "aaa,aaaaaa,aaaaaa,aa,a,a,a,bb,bbb,aaaaaaaaa,a,a,aaa";
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@Test
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public void stringSplit(){
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for(int i=0; i<TEST_EXECUTIONS; i++)
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assertSplit(str.split(delimiter));
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}
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public static Pattern pattern = Pattern.compile(delimiter);
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@Test
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public void patternSplit(){
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for(int i=0; i<TEST_EXECUTIONS; i++)
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assertSplit(pattern.split(str));
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}
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@Test
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public void substring(){
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for(int i=0; i<TEST_EXECUTIONS; i++) {
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ArrayList<String> splitList = new ArrayList<>();
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int from = 0, to = 0;
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while (to >= 0) {
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to = str.indexOf(delimiter, from + 1);
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if (to < 0)
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splitList.add(str.substring(from));
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else
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splitList.add(str.substring(from, to));
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from = to;
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}
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assertSplit(splitList.toArray(new String[splitList.size()]));
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}
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}
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public void assertSplit(String[] str){
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assertEquals(13,str.length);
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}
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}
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