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Found in [Package]

0.2.0-preview.18, 0.5.0-preview.17

Issue ID




[ECS] Uninformative "ArgumentNullException" error is thrown when using ToComponentDataArray on query that is missing a component

Package: Entity Component System (ECS)


How to reproduce:
1. Open the attached project ("")
2. Open Test Runner
3. Run the tests ("E7.Onmaku.SimfileEditor.Tests.Internal.dll > InternalSimfileEditorTests > NoteOperationProcessedStateTest > PutAndReverse")
4. Inspect the console

Expected results: Error messages show that requested components are not included in the query
Actual results: "ArgumentNullException: Value cannot be null." errors are thrown

Reproducible with: 2019.2.19f1, 2019.3.0f5, 2020.1.0a20
Couldn't test with: 2017.4 (package is not supported), 2018.4 (package errors after downgrading the project)
Reproducible with package versions: 0.2.0-preview.18, 0.5.0-preview.17

  1. Resolution Note:

    Fixed a long time ago. The exception thrown is InvalidOperationException, and specifically mentions the component type missing from the query as the cause of the error.

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