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How can I collect a heap dump from Gradle tests in a Spring Boot Application?

I trying to diagnose a memory leak while running my integration tests in my Spring Boot App.

When I am running :

./gradlew test -i --XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/Users/ng.newbie/Desktop/heapdump.bin

I keep getting OOM errors:

Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "pem.item.service.exchange.allocation-97"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "pem.item.service.exchange.itemAssortment-97"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "pem.item.service.exchange.order-97"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "pem.item.service.exchange.planning-97"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "HikariPool-37 housekeeper"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "HikariPool-1 housekeeper"

But no heap dump in the specified directory.

I have also tried adding the following to my gradle.properties:

org.gradle.jvmargs=-XX:MaxPermSize=512m -XX:PermSize=128m -Xmx1024m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/Users/ng.newbie/Desktop/crash.hprof

No change.

What am I doing wrong ?

How can I collect the heap dumps of the gradle test ?

Answer

Add the following in the build.gradle file

test {
    jvmArgs '-XX:+HeapDumpOnOutOfMemoryError'
}
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