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8078145: testlibrary_tests/RandomGeneratorTest.java failed with AssertionError : Unexpected random number sequence for mode: NO_SEED

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Reviewed-by: iignatyev, vlivanov
This commit is contained in:
Sergei Kovalev 2015-06-15 16:47:24 +03:00
parent d7522fb084
commit 518225447f
1 changed files with 32 additions and 14 deletions
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46
hotspot/test/testlibrary_tests/RandomGeneratorTest.java
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@ -32,11 +32,15 @@
* @run driver RandomGeneratorTest DIFFERENT_SEED
*/
import jdk.test.lib.ProcessTools;
import jdk.test.lib.Utils;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import jdk.test.lib.OutputAnalyzer;
import jdk.test.lib.ProcessTools;
import jdk.test.lib.Utils;
/**
* The test verifies correctness of work {@link jdk.test.lib.Utils#getRandomInstance()}.
@ -59,8 +63,13 @@ public class RandomGeneratorTest {
jvmArgs.add(optStr);
}
jvmArgs.add(RandomRunner.class.getName());
String origFileName = seedOpt.name() + "_orig";
jvmArgs.add(origFileName);
int fileNameIndex = jvmArgs.size() - 1;
String[] cmdLineArgs = jvmArgs.toArray(new String[jvmArgs.size()]);
String etalon = ProcessTools.executeTestJvm(cmdLineArgs).getStdout().trim();
ProcessTools.executeTestJvm(cmdLineArgs).shouldHaveExitValue(0);
String etalon = Utils.fileAsString(origFileName).trim();
cmdLineArgs[fileNameIndex] = seedOpt.name();
seedOpt.verify(etalon, cmdLineArgs);
}
@ -121,26 +130,31 @@ public class RandomGeneratorTest {
* @throws Throwable - Throws an exception in case test failure.
*/
public void verify(String orig, String[] cmdLine) {
String lastLineOrig = getLastLine(orig);
String lastLine;
String output;
OutputAnalyzer oa;
try {
lastLine = getLastLine(ProcessTools.executeTestJvm(cmdLine).getStdout().trim());
oa = ProcessTools.executeTestJvm(cmdLine);
} catch (Throwable t) {
throw new Error("TESTBUG: Unexpedted exception during jvm execution.", t);
}
if (!isOutputExpected(lastLineOrig, lastLine)) {
throw new AssertionError("Unexpected random number sequence for mode: " + this.name());
oa.shouldHaveExitValue(0);
try {
output = Utils.fileAsString(name()).trim();
} catch (IOException ioe) {
throw new Error("TESTBUG: Problem during IO operation with file: " + name(), ioe);
}
if (!isOutputExpected(orig, output)) {
System.err.println("Initial output: " + orig);
System.err.println("Second run output: " + output);
throw new AssertionError("Unexpected random number sequence for mode: " + this.name());
}
}
private static String getLastLine(String output) {
return output.substring(output.lastIndexOf(Utils.NEW_LINE)).trim();
}
}
/**
* The helper class generates several random numbers
* and prints them out.
* and put results to a file. The file name came as first
* command line argument.
*/
public static class RandomRunner {
private static final int COUNT = 10;
@ -150,7 +164,11 @@ public class RandomGeneratorTest {
for (int i = 0; i < COUNT; i++) {
sb.append(rng.nextLong()).append(' ');
}
System.out.println(sb.toString());
try (PrintWriter pw = new PrintWriter(new FileWriter(args[0]))) {
pw.write(sb.toString());
} catch (IOException ioe) {
throw new Error("TESTBUG: Problem during IO operation with file: " + args[0], ioe);
}
}
}
}