28 lines
1.1 KiB
Go
28 lines
1.1 KiB
Go
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package controller
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"k8s.io/client-go/tools/cache"
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)
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func TestCacheMutationDetectorEnabled(t *testing.T) {
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// this is a bit of simplistic test to check if we have a real cache mutation detector.
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// if we actually start mutating an informer cache in this test, the test will almost
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// always fail because the go race detector will see the mutation.
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// the cache mutation detector will certainly make certain races more common and thus
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// easily detected by the race detector, but its real use is against a compiled binary
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// such as pinniped-server running in a pod - that binary has no race detector at runtime.
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c := cache.NewCacheMutationDetector("test pinniped")
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type realCacheMutationDetector interface {
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CompareObjects() // this is brittle, but this function name has never changed...
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}
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require.Implementsf(t, (*realCacheMutationDetector)(nil), c, "%T is not a real cache mutation detector", c)
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}
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