ffd59ba600
Failpoint is used to control the fail during API call when testing, especially the API is complicated like CRI-RunPodSandbox. It can help us to test the unexpected behavior without mock. The control design is based on freebsd fail(9), but simpler. REF: https://www.freebsd.org/cgi/man.cgi?query=fail&sektion=9&apropos=0&manpath=FreeBSD%2B10.0-RELEASE Signed-off-by: Wei Fu <fuweid89@gmail.com>
135 lines
3.0 KiB
Go
135 lines
3.0 KiB
Go
/*
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Copyright The containerd 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 failpoint
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import (
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"reflect"
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"testing"
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"time"
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)
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func TestParseTerms(t *testing.T) {
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cases := []struct {
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terms string
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hasError bool
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}{
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// off
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{"5", true},
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{"*off()", true},
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{"5*off()", true},
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{"5*off(nothing)", true},
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{"5*off(", true},
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{"5*off", false},
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// error
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{"10000error(oops)", true},
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{"10*error(oops)", false},
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{"1234*error(oops))", true},
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{"12342*error()", true},
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// panic
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{"1panic(oops)", true},
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{"1000000*panic(oops)", false},
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{"12345*panic(oops))", true},
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{"12*panic()", true},
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// delay
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{"1*delay(oops)", true},
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{"1000000*delay(-1)", true},
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{"1000000*delay(1)", false},
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// cascading terms
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{"1*delay(1)-", true},
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{"10*delay(2)->", true},
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{"11*delay(3)->10*off(", true},
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{"12*delay(4)->10*of", true},
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{"13*delay(5)->10*off->1000*panic(oops)", false},
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}
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for i, c := range cases {
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fp, err := NewFailpoint(t.Name(), c.terms)
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if (err != nil && !c.hasError) ||
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(err == nil && c.hasError) {
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t.Fatalf("[%v - %s] expected hasError=%v, but got %v", i, c.terms, c.hasError, err)
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}
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if err != nil {
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continue
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}
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if got := fp.Marshal(); !reflect.DeepEqual(got, c.terms) {
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t.Fatalf("[%v] expected %v, but got %v", i, c.terms, got)
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}
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}
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}
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func TestEvaluate(t *testing.T) {
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terms := "1*error(oops-)->1*off->1*delay(1000)->1*panic(panic)"
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fp, err := NewFailpoint(t.Name(), terms)
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if err != nil {
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t.Fatalf("unexpected error %v", err)
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}
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injectedFn := func() error {
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if err := fp.Evaluate(); err != nil {
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return err
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}
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return nil
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}
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// should return oops- error
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if err := injectedFn(); err == nil || err.Error() != "oops-" {
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t.Fatalf("expected error %v, but got %v", "oops-", err)
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}
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// should return nil
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if err := injectedFn(); err != nil {
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t.Fatalf("expected nil, but got %v", err)
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}
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// should sleep 1s and return nil
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now := time.Now()
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err = injectedFn()
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du := time.Since(now)
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if err != nil {
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t.Fatalf("expected nil, but got %v", err)
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}
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if du < 1*time.Second {
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t.Fatalf("expected sleep 1s, but got %v", du)
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}
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// should panic
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defer func() {
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if err := recover(); err == nil || err.(string) != "panic" {
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t.Fatalf("should panic(panic), but got %v", err)
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}
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expected := "0*error(oops-)->0*off->0*delay(1000)->0*panic(panic)"
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if got := fp.Marshal(); got != expected {
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t.Fatalf("expected %v, but got %v", expected, got)
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}
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if err := injectedFn(); err != nil {
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t.Fatalf("expected nil, but got %v", err)
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}
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}()
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injectedFn()
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}
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