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Issue 746: fix/tidy RetryablePredicateTest

This commit is contained in:
Aled Sage 2011-12-19 10:18:39 +00:00
parent 6bac1db9fb
commit 9bbb3e7869
1 changed files with 17 additions and 21 deletions
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38
core/src/test/java/org/jclouds/predicates/RetryablePredicateTest.java
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@ -18,13 +18,15 @@
*/ */
package org.jclouds.predicates; package org.jclouds.predicates;
import static org.testng.Assert.fail;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Arrays;
import java.util.List; import java.util.List;
import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException; import java.util.concurrent.TimeoutException;
import com.google.common.base.Joiner;
import org.testng.Assert; import org.testng.Assert;
import org.testng.annotations.BeforeMethod; import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test; import org.testng.annotations.Test;
@ -33,9 +35,6 @@ import com.google.common.base.Predicate;
import com.google.common.base.Predicates; import com.google.common.base.Predicates;
import com.google.common.base.Stopwatch; import com.google.common.base.Stopwatch;
import com.google.common.base.Supplier; import com.google.common.base.Supplier;
import org.testng.collections.Lists;
import static org.testng.Assert.fail;
/** /**
* *
@ -45,7 +44,10 @@ import static org.testng.Assert.fail;
public class RetryablePredicateTest { public class RetryablePredicateTest {
// Grace must be reasonably big; Thread.sleep can take a bit longer to wake up sometimes... // Grace must be reasonably big; Thread.sleep can take a bit longer to wake up sometimes...
public static int SLOW_BUILD_SERVER_GRACE = 250; public static int SLOW_BUILD_SERVER_GRACE = 250;
// Sometimes returns sooner than timer would predict (e.g. observed 2999ms, when expected 3000ms)
public static int EARLY_RETURN_GRACE = 10;
private Stopwatch stopwatch; private Stopwatch stopwatch;
@BeforeMethod @BeforeMethod
@ -123,7 +125,7 @@ public class RetryablePredicateTest {
stopwatch.start(); stopwatch.start();
predicate.apply(""); predicate.apply("");
long duration = stopwatch.elapsedMillis(); long duration = stopwatch.elapsedMillis();
assertOrdered(2998, duration, 3000+SLOW_BUILD_SERVER_GRACE); assertOrdered(3000-EARLY_RETURN_GRACE, duration, 3000+SLOW_BUILD_SERVER_GRACE);
} }
@Test @Test
@ -137,8 +139,8 @@ public class RetryablePredicateTest {
predicate.apply(""); predicate.apply("");
long duration = stopwatch.elapsedMillis(); long duration = stopwatch.elapsedMillis();
assertOrdered(2500, duration, 2500+SLOW_BUILD_SERVER_GRACE); assertOrdered(2500-EARLY_RETURN_GRACE, duration, 2500+SLOW_BUILD_SERVER_GRACE);
assertCallFrequency(rawPredicate.callTimes, 0, 1000, 1000+1500); assertCallTimes(rawPredicate.callTimes, 0, 1000, 1000+1500);
} }
@Test @Test
@ -153,8 +155,8 @@ public class RetryablePredicateTest {
predicate.apply(""); predicate.apply("");
long duration = stopwatch.elapsedMillis(); long duration = stopwatch.elapsedMillis();
assertOrdered(2000, duration, 2000+SLOW_BUILD_SERVER_GRACE); assertOrdered(2000-EARLY_RETURN_GRACE, duration, 2000+SLOW_BUILD_SERVER_GRACE);
assertCallFrequency(rawPredicate.callTimes, 0, 1000, 2000); assertCallTimes(rawPredicate.callTimes, 0, 1000, 2000);
} }
private static class RepeatedAttemptsPredicate implements Predicate<String> { private static class RepeatedAttemptsPredicate implements Predicate<String> {
@ -175,27 +177,21 @@ public class RetryablePredicateTest {
} }
} }
private void assertCallFrequency(List<Long> actual, Integer... expected) { @Test(enabled=false) // not a test, but picked up as such because public
public static void assertCallTimes(List<Long> actual, Integer... expected) {
Assert.assertEquals(actual.size(), expected.length); Assert.assertEquals(actual.size(), expected.length);
for (int i = 0; i < expected.length; i++) { for (int i = 0; i < expected.length; i++) {
long callTime = actual.get(i); long callTime = actual.get(i);
assertOrdered(expected[i], callTime, expected[i]+SLOW_BUILD_SERVER_GRACE); assertOrdered(expected[i]-EARLY_RETURN_GRACE, callTime, expected[i]+SLOW_BUILD_SERVER_GRACE);
} }
} }
private void assertOrdered(long... values) { private static void assertOrdered(long... values) {
long prevVal = values[0]; long prevVal = values[0];
for (long val : values) { for (long val : values) {
if (val < prevVal) { if (val < prevVal) {
fail(String.format("%s should be ordered", asString(values))); fail(String.format("%s should be ordered", Arrays.toString(values)));
} }
} }
} }
private String asString(long... values) {
List<Long> result = Lists.newArrayList(values.length);
for(long element : values) result.add(element);
return "[" + Joiner.on(", ").join(result) + "]";
}
} }