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## What changed? I've added context-based methods to our testhooks package. This includes: - `NewInjectedTestHooksImpl` - returns a context and the registry injected into its chain - `SetCtx` - set a testhooks key on the first TestHooks implementor found in the context chain - `GetCtx` - get a testhooks value from the first TestHooks implementor found in the context chain - `CallCtx` - call a testhooks callback value in the first TestHooks implementor found in the context chain ## Why? This simplifies TestHook usage for modules that have an externally-controllable context. Rather than attach a TestHooks implementation to your production structs, you can instead inject it into the context provided by your tests. This does not work for temporal's end-to-end or functional tests at the moment, though a gRPC interceptor that injects a registry would not be difficult to write. ## How did you test it? - [x] built - [x] run locally and tested manually - [ ] covered by existing tests - [x] added new unit test(s) - [ ] added new functional test(s) ## Potential risks None
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
//go:build !test_dep
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package testhooks
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import (
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"context"
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"go.uber.org/fx"
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)
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var Module = fx.Options(
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fx.Provide(func() (_ TestHooks) { return }),
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)
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type (
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// TestHooks (in production mode) is an empty struct just so the build works.
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// See TestHooks in test_impl.go.
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//
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// TestHooks are an inherently unclean way of writing tests. They require mixing test-only
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// concerns into production code. In general you should prefer other ways of writing tests
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// wherever possible, and only use TestHooks sparingly, as a last resort.
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TestHooks struct{}
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)
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// Get gets the value of a test hook. In production mode it always returns the zero value and
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// false, which hopefully the compiler will inline and remove the hook as dead code.
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//
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// TestHooks should be used very sparingly, see comment on TestHooks.
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func Get[T any](_ TestHooks, key Key) (T, bool) {
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var zero T
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return zero, false
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}
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// GetCtx gets the value of a test hook from the registry embedded in the
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// context chain.
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//
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// TestHooks should be used sparingly, see comment on TestHooks.
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func GetCtx[T any](ctx context.Context, key Key) (T, bool) {
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var zero T
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return zero, false
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}
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// Call calls a func() hook if present.
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//
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// TestHooks should be used very sparingly, see comment on TestHooks.
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func Call(_ TestHooks, key Key) {
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}
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// CallCtx calls a func(context.Context) hook if present.
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//
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// TestHooks should be used very sparingly, see comment on TestHooks.
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func CallCtx(_ context.Context, key Key) {
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}
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