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CSV-284: Formalize PerformanceTest (#168) 

* CSV-284: Formalize PerformanceTest

* Revert some changes
This commit is contained in:
belugabehr 2021-07-15 09:03:51 -04:00 committed by GitHub
parent a2ba9b5288
commit 47479b6305
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2 changed files with 15 additions and 3 deletions
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12
BENCHMARK.md
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@ -60,3 +60,15 @@ mvn test -Pbenchmark -Dbenchmark=<name>
# Example of running basic "read" benchmark # Example of running basic "read" benchmark
mvn test -Pbenchmark -Dbenchmark=read mvn test -Pbenchmark -Dbenchmark=read
``` ```
Performance Test
-------------
Apache Commons CSV includes a stand-alone performance test which only covers commons-csv.
```shell
# Run the performance test
mvn test -Dtest=PerformanceTest
```
> :warning: This performance test does not use JMH; it uses simple timing metrics.

6
src/test/java/org/apache/commons/csv/perf/PerformanceTest.java
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@ -19,7 +19,6 @@ package org.apache.commons.csv.perf;
import java.io.BufferedReader; import java.io.BufferedReader;
import java.io.File; import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException; import java.io.FileNotFoundException;
import java.io.FileOutputStream; import java.io.FileOutputStream;
import java.io.FileReader; import java.io.FileReader;
@ -46,6 +45,7 @@ public class PerformanceTest {
private final int max = 10; private final int max = 10;
private static final String TEST_RESRC = "org/apache/commons/csv/perf/worldcitiespop.txt.gz";
private static final File BIG_FILE = new File(System.getProperty("java.io.tmpdir"), "worldcitiespop.txt"); private static final File BIG_FILE = new File(System.getProperty("java.io.tmpdir"), "worldcitiespop.txt");
@BeforeAll @BeforeAll
@ -54,10 +54,10 @@ public class PerformanceTest {
System.out.println(String.format("Found test fixture %s: %,d bytes.", BIG_FILE, BIG_FILE.length())); System.out.println(String.format("Found test fixture %s: %,d bytes.", BIG_FILE, BIG_FILE.length()));
return; return;
} }
System.out.println("Decompressing test fixture " + BIG_FILE + "..."); System.out.println("Decompressing test fixture to: " + BIG_FILE + "...");
try ( try (
final InputStream input = new GZIPInputStream( final InputStream input = new GZIPInputStream(
new FileInputStream("src/test/resources/perf/worldcitiespop.txt.gz")); PerformanceTest.class.getClassLoader().getResourceAsStream(TEST_RESRC));
final OutputStream output = new FileOutputStream(BIG_FILE)) { final OutputStream output = new FileOutputStream(BIG_FILE)) {
IOUtils.copy(input, output); IOUtils.copy(input, output);
System.out.println(String.format("Decompressed test fixture %s: %,d bytes.", BIG_FILE, BIG_FILE.length())); System.out.println(String.format("Decompressed test fixture %s: %,d bytes.", BIG_FILE, BIG_FILE.length()));