iSharkFly-Docs/java-tutorials
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #5721 from eugenp/fix-matcher-test

Browse Source 
fix regex matcher unit test
This commit is contained in:
Loredana Crusoveanu 2018-11-18 19:51:25 +02:00 committed by GitHub
commit 702495be5f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
core-java/src/test/java/com/baeldung/regexp/optmization/OptimizedMatcherUnitTest.java
View File

@ -1,6 +1,5 @@
package com.baeldung.regexp.optmization; package com.baeldung.regexp.optmization;
import org.junit.After;
import org.junit.Before; import org.junit.Before;
import org.junit.Test; import org.junit.Test;
@ -14,14 +13,16 @@ import static org.junit.Assert.assertTrue;
public class OptimizedMatcherUnitTest { public class OptimizedMatcherUnitTest {
private long time;
private long mstimePreCompiled;
private long mstimeNotPreCompiled;
private String action; private String action;
private List<String> items; private List<String> items;
private class TimeWrapper {
private long time;
private long mstimePreCompiled;
private long mstimeNotPreCompiled;
}
@Before @Before
public void setup() { public void setup() {
Random random = new Random(); Random random = new Random();
@ -48,27 +49,27 @@ public class OptimizedMatcherUnitTest {
@Test @Test
public void givenANotPreCompiledAndAPreCompiledPatternA_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() { public void givenANotPreCompiledAndAPreCompiledPatternA_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
TimeWrapper timeObj = new TimeWrapper();
testPatterns("A*"); testPatterns("A*", timeObj);
assertTrue(mstimePreCompiled < mstimeNotPreCompiled); assertTrue(timeObj.mstimePreCompiled < timeObj.mstimeNotPreCompiled);
} }
@Test @Test
public void givenANotPreCompiledAndAPreCompiledPatternABC_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() { public void givenANotPreCompiledAndAPreCompiledPatternABC_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
TimeWrapper timeObj = new TimeWrapper();
testPatterns("A*B*C*"); testPatterns("A*B*C*", timeObj);
assertTrue(mstimePreCompiled < mstimeNotPreCompiled); assertTrue(timeObj.mstimePreCompiled < timeObj.mstimeNotPreCompiled);
} }
@Test @Test
public void givenANotPreCompiledAndAPreCompiledPatternECWF_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() { public void givenANotPreCompiledAndAPreCompiledPatternECWF_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
TimeWrapper timeObj = new TimeWrapper();
testPatterns("E*C*W*F*"); testPatterns("E*C*W*F*", timeObj);
assertTrue(mstimePreCompiled < mstimeNotPreCompiled); assertTrue(timeObj.mstimePreCompiled < timeObj.mstimeNotPreCompiled);
} }
private void testPatterns(String regex) { private void testPatterns(String regex, TimeWrapper timeObj) {
time = System.nanoTime(); timeObj.time = System.nanoTime();
int matched = 0; int matched = 0;
int unmatched = 0; int unmatched = 0;
@ -83,10 +84,10 @@ public class OptimizedMatcherUnitTest {
this.action = "uncompiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched; this.action = "uncompiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
this.mstimeNotPreCompiled = (System.nanoTime() - time) / 1000000; timeObj.mstimeNotPreCompiled = (System.nanoTime() - timeObj.time) / 1000000;
System.out.println(this.action + ": " + mstimeNotPreCompiled + "ms"); System.out.println(this.action + ": " + timeObj.mstimeNotPreCompiled + "ms");
time = System.nanoTime(); timeObj.time = System.nanoTime();
Matcher matcher = Pattern.compile(regex).matcher(""); Matcher matcher = Pattern.compile(regex).matcher("");
matched = 0; matched = 0;
@ -103,7 +104,7 @@ public class OptimizedMatcherUnitTest {
this.action = "compiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched; this.action = "compiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
this.mstimePreCompiled = (System.nanoTime() - time) / 1000000; timeObj.mstimePreCompiled = (System.nanoTime() - timeObj.time) / 1000000;
System.out.println(this.action + ": " + mstimePreCompiled + "ms"); System.out.println(this.action + ": " + timeObj.mstimePreCompiled + "ms");
} }
} }