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Refactor TimeBasedDirectoryCleanerConfigTest for macOS vs Linux #556

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merged 2 commits into from
May 4, 2021
Merged

Refactor TimeBasedDirectoryCleanerConfigTest for macOS vs Linux #556

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29bd98e
Refactor TimeBasedDirectoryCleanerConfigTest for macOS vs Linux
sleberknight May 4, 2021
459bcb9
Fix imports that were messed up by my other MacBook
sleberknight May 4, 2021
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136 changes: 80 additions & 56 deletions src/test/java/org/kiwiproject/dropwizard/config/TimeBasedDirectoryCleanerConfigTest.java
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Original file line number Diff line number Diff line change
@@ -1,22 +1,5 @@
package org.kiwiproject.dropwizard.config;

import static com.google.common.base.Preconditions.checkState;
import static org.apache.commons.lang3.SystemUtils.IS_OS_MAC;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.SoftAssertions.assertSoftly;
import static org.awaitility.Awaitility.await;
import static org.awaitility.Durations.TEN_SECONDS;
import static org.kiwiproject.validation.ValidationTestHelper.assertNoPropertyViolations;
import static org.kiwiproject.validation.ValidationTestHelper.assertNoViolations;
import static org.kiwiproject.validation.ValidationTestHelper.assertOnePropertyViolation;
import static org.kiwiproject.validation.ValidationTestHelper.newValidator;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.health.HealthCheckRegistry;
import io.dropwizard.lifecycle.setup.LifecycleEnvironment;
Expand All @@ -30,7 +13,6 @@
import org.junit.jupiter.api.io.TempDir;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import org.kiwiproject.base.DefaultEnvironment;
import org.kiwiproject.dropwizard.metrics.health.TimeBasedDirectoryCleanerHealthCheck;
import org.kiwiproject.io.TimeBasedDirectoryCleaner;
import org.kiwiproject.io.TimeBasedDirectoryCleanerTestHelper;
Expand All @@ -43,6 +25,17 @@
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;

import static com.google.common.base.Preconditions.checkState;
import static org.apache.commons.lang3.SystemUtils.IS_OS_MAC;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.SoftAssertions.assertSoftly;
import static org.awaitility.Awaitility.await;
import static org.awaitility.Durations.ONE_MINUTE;
import static org.kiwiproject.validation.ValidationTestHelper.*;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.*;

@DisplayName("TimeBasedDirectoryCleanerConfig")
@Slf4j
class TimeBasedDirectoryCleanerConfigTest {
Expand Down Expand Up @@ -106,37 +99,31 @@ void testScheduleCleanup_WithScheduleExecutor_IntegrationTest() throws Interrupt
softly.assertThat(cleaner.getDeleteCount()).isEqualTo(100);
softly.assertThat(cleaner.getDeleteErrorCount()).isZero();
});

logCleanerStats("cleaner", cleaner, 100);
} finally {
shutdownAndAwaitTermination(executorService);
}
}

private void waitUntilNoFilesInTempFolder() {
await().atMost(10, TimeUnit.SECONDS).until(() -> numFilesInTempFolder() == 0);
}

private int numFilesInTempFolder() throws IOException {
return testHelper.filesInTempFolder().size();
}

private void shutdownAndAwaitTermination(ScheduledExecutorService executorService) throws InterruptedException {
executorService.shutdown();
boolean terminated = executorService.awaitTermination(1, TimeUnit.SECONDS);
LOG.info("executorService terminated within timeout? {}", terminated);
}

/**
* Test two concurrent cleaners, first with a low number (500) of files, and then with a high number (2000).
* <p>
* With the low number, neither cleaner reaches the maximum number of recent delete errors stored by
* {@link org.kiwiproject.io.TimeBasedDirectoryCleaner}. With the higher number, each cleaner should exceed the maximum number of
* recent delete errors. This lets us verify both of those cases.
* {@link org.kiwiproject.io.TimeBasedDirectoryCleaner}. With the higher number, each cleaner should exceed the
* maximum number of recent delete errors. This lets us verify both of those cases.
*
* @implNote On macOS with concurrent cleaners we see more successful file deletes than the total file count and
* are not quite sure why, and whether this is something specific to macOS, or to the JVM on macOS, etc. Because
* of this, we have some ugly conditional code for macOS that uses "greater than or equal to" as the condition
* instead of exact equality.
* @see TimeBasedDirectoryCleaner#capacityOfRecentDeleteErrors()
*/
@ParameterizedTest
@ValueSource(ints = { 500, 2000 })
void testScheduleCleanup_WithScheduledExecutor_UsingMultipleConcurrentCleaners_IntegrationTest(int totalFileCount) throws InterruptedException {
@ValueSource(ints = {500, 2000})
void testScheduleCleanup_WithScheduledExecutor_UsingMultipleConcurrentCleaners_IntegrationTest(int totalFileCount)
throws InterruptedException {

assertThat(TimeBasedDirectoryCleaner.capacityOfRecentDeleteErrors())
.describedAs("Assumption of cleaner error queue capacity of 500 is invalid; @ValueSource values need to be adjusted")
.isEqualTo(500);
Expand All @@ -154,12 +141,15 @@ void testScheduleCleanup_WithScheduledExecutor_UsingMultipleConcurrentCleaners_I
testHelper.createDirectoriesWithFiles(1, 100);

var cleaner1 = cleanerConfig.scheduleCleanupUsing(executorService1);
addDelayOnMacOS();
var cleaner2 = cleanerConfig.scheduleCleanupUsing(executorService2);

testHelper.createDirectoriesWithFiles(101, 200);
testHelper.createDirectoriesWithFiles(201, 300);

if (IS_OS_MAC) {
LOG.warn("macOS wait conditions and assertions will use >= comparison instead of ==");
}

waitUntilReachExpectedDeleteCount(cleaner1, cleaner2, 300);

testHelper.createDirectoriesWithFiles(301, 400);
Expand All @@ -172,10 +162,7 @@ void testScheduleCleanup_WithScheduledExecutor_UsingMultipleConcurrentCleaners_I
logAggregateCleanerStats(totalFileCount, cleaner1, cleaner2);

assertSoftly(softly -> {
softly.assertThat(cleaner1.getDeleteCount() + cleaner2.getDeleteCount())
.describedAs("sum of delete count for both cleaners should equal total file count")
.isEqualTo(totalFileCount);

softAssertTotalDeleteCount(softly, totalFileCount, cleaner1, cleaner2);
softAssertConcurrentCleanerDeleteCounts(softly, cleaner1, totalFileCount);
softAssertConcurrentCleanerDeleteCounts(softly, cleaner2, totalFileCount);
});
Expand All @@ -185,28 +172,41 @@ void testScheduleCleanup_WithScheduledExecutor_UsingMultipleConcurrentCleaners_I
}
}

private static void addDelayOnMacOS() {
// Add a slight delay on macOS to avoid the issues seen in #143
private static void waitUntilReachExpectedDeleteCount(TimeBasedDirectoryCleaner cleaner1,
TimeBasedDirectoryCleaner cleaner2,
int expectedDeleteCount) {
await().atMost(ONE_MINUTE).until(() -> hasExpectedNumberOfDeletes(cleaner1, cleaner2, expectedDeleteCount));
}

private static boolean hasExpectedNumberOfDeletes(TimeBasedDirectoryCleaner cleaner1,
TimeBasedDirectoryCleaner cleaner2,
int expectedDeleteCount) {

long totalDeleteCount = cleaner1.getDeleteCount() + cleaner2.getDeleteCount();
if (IS_OS_MAC) {
new DefaultEnvironment().sleepQuietly(400);
return totalDeleteCount >= expectedDeleteCount;
}
}

private void waitUntilReachExpectedDeleteCount(TimeBasedDirectoryCleaner cleaner1,
TimeBasedDirectoryCleaner cleaner2,
int expectedDeleteCount) {
await().atMost(TEN_SECONDS).until(() -> cleaner1.getDeleteCount() + cleaner2.getDeleteCount() == expectedDeleteCount);
return totalDeleteCount == expectedDeleteCount;
}

private void logCleanerStats(String name, TimeBasedDirectoryCleaner cleaner, int totalFileCount) {
LOG.info("Stats for cleaner: {} (totalFileCount: {})", name, totalFileCount);
LOG.info("----------------------------------------");
LOG.info("\tdeletes : {}", cleaner.getDeleteCount());
LOG.info("\terrors : {}", cleaner.getDeleteErrorCount());
LOG.info("\n");
private static void softAssertTotalDeleteCount(SoftAssertions softly,
int totalFileCount,
TimeBasedDirectoryCleaner cleaner1,
TimeBasedDirectoryCleaner cleaner2) {
var deleteCountAssert = softly.assertThat(cleaner1.getDeleteCount() + cleaner2.getDeleteCount());
if (IS_OS_MAC) {
deleteCountAssert
.describedAs("sum of delete count for both cleaners should be equal to or greater than total file count")
.isGreaterThanOrEqualTo(totalFileCount);
} else {
deleteCountAssert
.describedAs("sum of delete count for both cleaners should equal total file count")
.isEqualTo(totalFileCount);
}
}

private void logAggregateCleanerStats(int totalFileCount, TimeBasedDirectoryCleaner... cleaners) {
private static void logAggregateCleanerStats(int totalFileCount, TimeBasedDirectoryCleaner... cleaners) {
var totalDeletes = Arrays.stream(cleaners)
.map(TimeBasedDirectoryCleaner::getDeleteCount)
.reduce(Long::sum)
Expand Down Expand Up @@ -304,6 +304,8 @@ void testScheduleCleanup_WithDropwizardEnvironment_IntegrationTest() throws Inte
softly.assertThat(cleaner.getDeleteErrorCount()).isZero();
});

logCleanerStats("cleaner", cleaner, 80);

verify(healthChecks).register(
eq("timeBasedDirectoryCleaner(" + temporaryPath + ")"),
isA(TimeBasedDirectoryCleanerHealthCheck.class));
Expand All @@ -316,6 +318,28 @@ void testScheduleCleanup_WithDropwizardEnvironment_IntegrationTest() throws Inte
}
}

private void waitUntilNoFilesInTempFolder() {
await().atMost(10, TimeUnit.SECONDS).until(() -> numFilesInTempFolder() == 0);
}

private int numFilesInTempFolder() throws IOException {
return testHelper.filesInTempFolder().size();
}

private static void logCleanerStats(String name, TimeBasedDirectoryCleaner cleaner, int totalFileCount) {
LOG.info("Stats for cleaner: {} (totalFileCount: {})", name, totalFileCount);
LOG.info("----------------------------------------");
LOG.info("\tdeletes : {}", cleaner.getDeleteCount());
LOG.info("\terrors : {}", cleaner.getDeleteErrorCount());
LOG.info("\n");
}

private static void shutdownAndAwaitTermination(ScheduledExecutorService executorService) throws InterruptedException {
executorService.shutdown();
boolean terminated = executorService.awaitTermination(1, TimeUnit.SECONDS);
LOG.info("executorService terminated within timeout? {}", terminated);
}

private static LifecycleEnvironment spyLifecycleEnvironment(Environment mockEnv) {
var lifecycleEnvironment = new LifecycleEnvironment(new MetricRegistry());
var spy = spy(lifecycleEnvironment);
Expand Down