Add a GPUI testing example - #46215
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This example demonstrates GPUI's testing capabilities: - Basic entity testing with TestAppContext - Window-based testing with VisualTestContext - Async operations and task spawning - Property testing with iterations - External I/O with allow_parking() - Distributed system testing with multiple app contexts - Random task interleaving for race condition detection 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Had some trouble in a PR with missing a test API change until deep into a refactor. Decided to move some example tests into the GPUI repo to put those through their paces, and got carried away and made a big test example file demonstrating all the testing features we have. Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Had some trouble in a PR with missing a test API change until deep into a refactor. Decided to move some example tests into the GPUI repo to put those through their paces, and got carried away and made a big test example file demonstrating all the testing features we have. Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Had some trouble in a PR with missing a test API change until deep into a refactor. Decided to move some example tests into the GPUI crate so we can test out those paths earlier in the refactoring process. But I got carried away and made a big test example file demonstrating all the testing features we have.
Release Notes: