Feature: Added unit test for watcher#1529
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ayushrakesh wants to merge 2 commits intokube-rs:mainfrom
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Signed-off-by: ayushrakesh <ayushrakesh.05@gmail.com>
Signed-off-by: ayushrakesh <ayushrakesh.05@gmail.com>
mateiidavid
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Jul 17, 2024
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@ayushrakesh thanks! I'm super excited about this, particularly since the watcher abstraction is such an important piece of the runtime crate. I see there's a bit more work to do here though. Let me know if you have any questions or if I can help out with anything.
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| // #[async_trait] | ||
| // trait ApiMode { | ||
| // type Value: Clone; | ||
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| // async fn list(&self, lp: &ListParams) -> kube_client::Result<ObjectList<Self::Value>>; | ||
| // async fn watch( | ||
| // &self, | ||
| // wp: &WatchParams, | ||
| // version: &str, | ||
| // ) -> kube_client::Result<BoxStream<'static, kube_client::Result<WatchEvent<Self::Value>>>>; | ||
| // } |
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| #[derive(Clone)] | ||
| struct TestResource { | ||
| // fields here | ||
| } |
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I wonder if we actually need a TestResource? Can we have our TestApiMode be generic over a K type that represents a k8s resource? Is the TestResource used to simplify this?
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Fixes #1528
Motivation
The primary problem is avoiding the accidental release of breaking changes to the watcher module in the future. The current testing approach was not adequate to catch all issues. particularly concerning how the watcher handles listing and watching resources in Kubernetes.
Solution
Creating a test-specific struct that implements the ApiMode trait. This test struct allows for injecting synthetic events and responses, simulating the behavior of an actual Kubernetes API server without making real API calls.