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ReflectionTestUtils should defensively invoke toString() on target objects [SPR-14363] #18935

spring-projects-issues opened this issue Jun 14, 2016 · 1 comment


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@spring-projects-issues spring-projects-issues commented Jun 14, 2016

Sam Brannen opened SPR-14363 and commented

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ReflectionTestUtils invokes toString() on target objects in order to create messages for exceptions and logging; however, as discussed in #14205, this practice can lead to problems if the invocation of toString() throws an exception.

The upgrade to Gradle 2.14 in #18934 made it apparent that ReflectionTestUtils.setField() in fact fails with an exception if the log level for ReflectionTestUtils is set to DEBUG. A quick inspection of the rest of the code in ReflectionTestUtils reveals that all other methods would fail in a similar fashion.


  1. Ensure that all invocations of toString() on target objects within ReflectionTestUtils are performed defensively (i.e., by catching any exceptions).

Affects: 3.2.17

Issue Links:

  • #14205 ReflectionTestUtils.setField() should not call toString() on the target
  • #18934 Upgrade build to Gradle 2.14.1

Referenced from: commits 045ee52

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