mirror of https://github.com/knative/pkg.git
137 lines
3.8 KiB
Go
137 lines
3.8 KiB
Go
/*
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Copyright 2020 The Knative Authors
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Licensed under the Apache License, Veroute.on 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 reconciler
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import (
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"errors"
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"testing"
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apierrs "k8s.io/apimachinery/pkg/api/errors"
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v1 "k8s.io/api/autoscaling/v1"
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)
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func TestRetryUpdateConflicts(t *testing.T) {
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errAny := errors.New("foo")
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errConflict := apierrs.NewConflict(v1.Resource("foo"), "bar", errAny)
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tests := []struct {
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name string
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returns []error
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want error
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wantAttempts int
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}{{
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name: "all good",
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returns: []error{nil},
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want: nil,
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wantAttempts: 1,
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}, {
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name: "not retry on non-conflict error",
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returns: []error{errAny},
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want: errAny,
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wantAttempts: 1,
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}, {
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name: "retry up to 5 times on conflicts",
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returns: []error{errConflict, errConflict, errConflict, errConflict, errConflict, errConflict},
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want: errConflict,
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wantAttempts: 5,
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}, {
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name: "eventually succeed",
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returns: []error{errConflict, errConflict, nil},
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want: nil,
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wantAttempts: 3,
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}, {
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name: "eventually fail",
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returns: []error{errConflict, errConflict, errAny},
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want: errAny,
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wantAttempts: 3,
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}}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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attempts := 0
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got := RetryUpdateConflicts(func(i int) error {
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attempts++
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return test.returns[i]
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})
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if !errors.Is(got, test.want) {
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t.Errorf("RetryUpdateConflicts() = %v, want %v", got, test.want)
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}
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if attempts != test.wantAttempts {
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t.Errorf("attempts = %d, want %d", attempts, test.wantAttempts)
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}
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})
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}
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}
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func TestRetryTestErrors(t *testing.T) {
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errAny := errors.New("foo")
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errGKE := errors.New(`operation cannot be fulfilled on resourcequotas "gke-resource-quotas": StorageError: invalid object, Code: 4, Key: /registry/resourcequotas/serving-tests/gke-resource-quotas, ResourceVersion: 0, AdditionalErrorMsg: Precondition failed: UID in precondition: 7aaedbdf-caa8-41e7-94cb-f8c053038e86, UID in object meta`)
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errEtcd := errors.New("etcdserver: request timed out")
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errConflict := apierrs.NewConflict(v1.Resource("foo"), "bar", errAny)
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tests := []struct {
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name string
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returns []error
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want error
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wantAttempts int
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}{{
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name: "all good",
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returns: []error{nil},
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want: nil,
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wantAttempts: 1,
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}, {
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name: "not retry on non-conflict error",
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returns: []error{errAny},
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want: errAny,
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wantAttempts: 1,
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}, {
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name: "retry up to 5 times",
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returns: []error{errConflict, errGKE, errEtcd, errConflict, errGKE, errEtcd},
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want: errGKE,
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wantAttempts: 5,
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}, {
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name: "eventually succeed",
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returns: []error{errConflict, errGKE, errEtcd, nil},
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want: nil,
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wantAttempts: 4,
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}, {
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name: "eventually fail",
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returns: []error{errConflict, errConflict, errAny},
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want: errAny,
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wantAttempts: 3,
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}}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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attempts := 0
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got := RetryTestErrors(func(i int) error {
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attempts++
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return test.returns[i]
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})
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if !errors.Is(got, test.want) {
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t.Errorf("RetryTestErrors() = %v, want %v", got, test.want)
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}
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if attempts != test.wantAttempts {
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t.Errorf("attempts = %d, want %d", attempts, test.wantAttempts)
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}
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})
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}
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}
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