63aa261583
The new TContext interface combines a normal context and the testing interface, then adds some helper methods. The context gets canceled when the test is done, but that can also be requested earlier via Cancel. The intended usage is to pass a single `tCtx ktesting.TContext` parameter around in all helper functions that get called by a unit or integration test. Logging is also more useful: Log[f] and Fatal[f] output is prefixed with "[FATAL] ERROR: " to make it stand out more from regular log output. If this approach turns out to be useful, it could be extended further (for example, with a per-test timeout) and might get moved to a staging repository to enable usage of it in other staging repositories. To allow other implementations besides testing.T and testing.B, a custom ktesting.TB interface gets defined with the methods expected from the actual implementation. One such implementation can be ginkgo.GinkgoT().
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
/*
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Copyright 2023 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ktesting_test
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import (
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"k8s.io/client-go/rest"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/test/utils/ktesting"
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)
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func TestCancelManual(t *testing.T) {
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tCtx := ktesting.Init(t)
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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// Blocks until tCtx.Cancel is called below.
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<-tCtx.Done()
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}()
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tCtx.Cancel("manually canceled")
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wg.Wait()
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}
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func TestCancelAutomatic(t *testing.T) {
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var wg sync.WaitGroup
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// This callback gets registered first and thus
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// gets invoked last.
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t.Cleanup(wg.Wait)
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tCtx := ktesting.Init(t)
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wg.Add(1)
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go func() {
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defer wg.Done()
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// Blocks until the context gets canceled automatically.
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<-tCtx.Done()
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}()
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}
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func TestCancelCtx(t *testing.T) {
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tCtx := ktesting.Init(t)
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var discardLogger klog.Logger
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tCtx = ktesting.WithLogger(tCtx, discardLogger)
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tCtx = ktesting.WithRESTConfig(tCtx, new(rest.Config))
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baseCtx := tCtx
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tCtx.Cleanup(func() {
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if tCtx.Err() == nil {
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t.Error("context should be canceled but isn't")
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}
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})
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tCtx.CleanupCtx(func(tCtx ktesting.TContext) {
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if tCtx.Err() != nil {
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t.Errorf("context should not be canceled but is: %v", tCtx.Err())
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}
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assert.Equal(t, baseCtx.Logger(), tCtx.Logger(), "Logger()")
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assert.Equal(t, baseCtx.RESTConfig(), tCtx.RESTConfig(), "RESTConfig()")
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assert.Equal(t, baseCtx.RESTMapper(), tCtx.RESTMapper(), "RESTMapper()")
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assert.Equal(t, baseCtx.Client(), tCtx.Client(), "Client()")
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assert.Equal(t, baseCtx.Dynamic(), tCtx.Dynamic(), "Dynamic()")
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assert.Equal(t, baseCtx.APIExtensions(), tCtx.APIExtensions(), "APIExtensions()")
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})
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// Cancel, then let testing.T invoke test cleanup.
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tCtx.Cancel("test is complete")
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}
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