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Improve error message for non-static @MethodSource factory methods #3263

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merged 5 commits into from
Apr 26, 2023

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BassemElMasry
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@BassemElMasry BassemElMasry commented Apr 21, 2023

Overview

Improve error message for non-static @MethodSource factory methods.

Currently, when a non-static method is required for test instance lifecycle PER_METHOD, the error message thrown is unclear.

issue: 3215


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@sbrannen sbrannen changed the title Improving error message for non-static @MethodSource factory methods Improve error message for non-static @MethodSource factory methods Apr 21, 2023
@marcphilipp marcphilipp linked an issue Apr 22, 2023 that may be closed by this pull request
@BassemElMasry BassemElMasry force-pushed the issue/3215 branch 2 times, most recently from f20963f to 27c34b1 Compare April 24, 2023 20:48
@marcphilipp marcphilipp merged commit 0aae9a9 into junit-team:main Apr 26, 2023
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Thank you for your contribution, @BassemElMasry! 👍

sbrannen added a commit that referenced this pull request Apr 28, 2023
Prior to this commit, the error message was cryptic if an external
factory method was non-static and the test class was configured to run
with test instance per-class lifecycle semantics.

Specifically, the error was the following from the native implementation
of Method#invoke in the JDK.

java.lang.IllegalArgumentException: object is not an instance of declaring class

This commit builds on the work done in PR #3263 by expanding the "static
is required" check to any resolved factory method that cannot be invoked
on the current test instance (which may be null).

Consequently, the isPerMethodLifecycle() check is no longer necessary.

Closes #3276
sbrannen added a commit that referenced this pull request Apr 29, 2023
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Improve error message for non-static @MethodSource factory methods
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