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I have faced with memory problem and read this question which tells to increase -Xmx parameter. But when I opened JUnit default Run configuration I saw no parameter -Xmx.

So how to determine the default value for -Xmx in JUnit in default Run configuration for Intellij Idea?

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Hope this link will hep you: https://intellij-support.jetbrains.com/hc/en-us/articles/206544869-Configuring-JVM-options-and-platform-properties

Otherwise Go to Run Configuration, There you will see VM Options, Where you can specify the configurations

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search -Didea.test.cyclic.buffer.size= in Console after running a test. Then you can see. For my MacBook, it is -Didea.test.cyclic.buffer.size=10485760.

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