2d2e3b3d8b
Previously, the deferred line writing that is used, to print MockMvc results to the console assumed that each DeferredLinesWriter would only be used by a single thread at a time. This assumption does not hold true when using JUnit 5's parallel test exection if the tests running in parallel share an application context. This resulted in a concurrent modification exception if one thread was adding lines to the output while another was iterating over them. This commit updates DeferredLinesWriter so that it uses thread local storage for the deferred lines. This ensures that each List of lines is only ever accessed by a single thread. Closes gh-16179 |
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