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Copy pathrestart_test.go
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120 lines (101 loc) · 3.55 KB
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// Copyright 2016 VMware, Inc. All Rights Reserved.
//
// 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 main
import (
"fmt"
"os/exec"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/vmware/vic/lib/config/executor"
"github.com/vmware/vic/lib/tether"
"github.com/vmware/vic/pkg/vsphere/extraconfig"
)
/////////////////////////////////////////////////////////////////////////////////////
// TestPathLookup constructs the spec for a Session where the binary path must be
// resolved from the PATH environment variable - this is a variation from normal
// Cmd handling where that is done during creation of Cmd
//
func TestRestart(t *testing.T) {
testSetup(t)
defer testTeardown(t)
cfg := executor.ExecutorConfig{
ExecutorConfigCommon: executor.ExecutorConfigCommon{
ID: "pathlookup",
Name: "tether_test_executor",
},
Diagnostics: executor.Diagnostics{
DebugLevel: 2,
},
Sessions: map[string]*executor.SessionConfig{
"pathlookup": {
Common: executor.Common{
ID: "pathlookup",
Name: "tether_test_session",
},
Tty: false,
Active: true,
Cmd: executor.Cmd{
// test relative path
Path: "date",
Args: []string{"date", "--reference=/"},
Env: []string{"PATH=/bin"},
Dir: "/bin",
},
Restart: true,
},
},
}
tthr, src := StartTether(t, &cfg)
// wait for initialization
<-Mocked.Started
result := &tether.ExecutorConfig{}
extraconfig.Decode(src, result)
// Started returns when we reload but that doesn't mean that the process is started
// Try multiple times before giving up
for i := 0; i < 10; i++ {
if result.Sessions["pathlookup"].Started != "" {
break
}
time.Sleep(time.Duration(i) * time.Millisecond)
}
assert.Equal(t, 0, result.Sessions["pathlookup"].ExitStatus, "Expected command to have exited cleanly")
assert.True(t, result.Sessions["pathlookup"].Restart, "Expected command to be configured for restart")
// wait for the resurrection count to max out the channel
for result.Sessions["pathlookup"].Diagnostics.ResurrectionCount < 10 {
result = &tether.ExecutorConfig{}
extraconfig.Decode(src, &result)
assert.Equal(t, 0, result.Sessions["pathlookup"].ExitStatus, "Expected command to have exited cleanly")
// proceed to the next reincarnation
<-Mocked.SessionExit
tthr.Reload()
}
// read the output from the session
log := Mocked.SessionLogBuffer.Bytes()
// the tether has to be stopped before comparison on the reaper may swaller exec.Wait
tthr.Stop()
<-Mocked.Cleaned
// run the command directly
out, err := exec.Command("/bin/date", "--reference=/").Output()
if err != nil {
fmt.Printf("Failed to run date for comparison data: %s", err)
t.Error(err)
return
}
assert.True(t, strings.HasPrefix(string(log), string(out)), "Expected the data to be constant - first invocation doesn't match")
assert.True(t, strings.HasSuffix(string(log), string(out)), "Expected the data to be constant - last invocation doesn't match")
// prevent indefinite wait in tether - normally session exit would trigger this
tthr.Stop()
}