| // Copyright 2015 The etcd Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package osutil |
| |
| import ( |
| "os" |
| "os/signal" |
| "reflect" |
| "syscall" |
| "testing" |
| "time" |
| ) |
| |
| func init() { setDflSignal = func(syscall.Signal) {} } |
| |
| func TestUnsetenv(t *testing.T) { |
| tests := []string{ |
| "data", |
| "space data", |
| "equal=data", |
| } |
| for i, tt := range tests { |
| key := "ETCD_UNSETENV_TEST" |
| if os.Getenv(key) != "" { |
| t.Fatalf("#%d: cannot get empty %s", i, key) |
| } |
| env := os.Environ() |
| if err := os.Setenv(key, tt); err != nil { |
| t.Fatalf("#%d: cannot set %s: %v", i, key, err) |
| } |
| if err := Unsetenv(key); err != nil { |
| t.Errorf("#%d: unsetenv %s error: %v", i, key, err) |
| } |
| if g := os.Environ(); !reflect.DeepEqual(g, env) { |
| t.Errorf("#%d: env = %+v, want %+v", i, g, env) |
| } |
| } |
| } |
| |
| func waitSig(t *testing.T, c <-chan os.Signal, sig os.Signal) { |
| select { |
| case s := <-c: |
| if s != sig { |
| t.Fatalf("signal was %v, want %v", s, sig) |
| } |
| case <-time.After(1 * time.Second): |
| t.Fatalf("timeout waiting for %v", sig) |
| } |
| } |
| |
| func TestHandleInterrupts(t *testing.T) { |
| for _, sig := range []syscall.Signal{syscall.SIGINT, syscall.SIGTERM} { |
| n := 1 |
| RegisterInterruptHandler(func() { n++ }) |
| RegisterInterruptHandler(func() { n *= 2 }) |
| |
| c := make(chan os.Signal, 2) |
| signal.Notify(c, sig) |
| |
| HandleInterrupts() |
| syscall.Kill(syscall.Getpid(), sig) |
| |
| // we should receive the signal once from our own kill and |
| // a second time from HandleInterrupts |
| waitSig(t, c, sig) |
| waitSig(t, c, sig) |
| |
| if n == 3 { |
| t.Fatalf("interrupt handlers were called in wrong order") |
| } |
| if n != 4 { |
| t.Fatalf("interrupt handlers were not called properly") |
| } |
| // reset interrupt handlers |
| interruptHandlers = interruptHandlers[:0] |
| interruptExitMu.Unlock() |
| } |
| } |