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// Copyright 2015 CoreOS, Inc.
//
// 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 activation
import (
"bytes"
"io"
"os"
"os/exec"
"testing"
)
// correctStringWritten fails the text if the correct string wasn't written
// to the other side of the pipe.
func correctStringWritten(t *testing.T, r *os.File, expected string) bool {
bytes := make([]byte, len(expected))
io.ReadAtLeast(r, bytes, len(expected))
if string(bytes) != expected {
t.Fatalf("Unexpected string %s", string(bytes))
}
return true
}
// TestActivation forks out a copy of activation.go example and reads back two
// strings from the pipes that are passed in.
func TestActivation(t *testing.T) {
arg0, cmdline := exampleCmd("activation")
cmd := exec.Command(arg0, cmdline...)
r1, w1, _ := os.Pipe()
r2, w2, _ := os.Pipe()
cmd.ExtraFiles = []*os.File{
w1,
w2,
}
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, "LISTEN_FDS=2", "LISTEN_FDNAMES=fd1", "FIX_LISTEN_PID=1")
err := cmd.Run()
if err != nil {
t.Fatalf(err.Error())
}
correctStringWritten(t, r1, "Hello world: fd1")
correctStringWritten(t, r2, "Goodbye world: LISTEN_FD_4")
}
func TestActivationNoFix(t *testing.T) {
arg0, cmdline := exampleCmd("activation")
cmd := exec.Command(arg0, cmdline...)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, "LISTEN_FDS=2")
out, _ := cmd.CombinedOutput()
if !bytes.Contains(out, []byte("No files")) {
t.Fatalf("Child didn't error out as expected")
}
}
func TestActivationNoFiles(t *testing.T) {
arg0, cmdline := exampleCmd("activation")
cmd := exec.Command(arg0, cmdline...)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, "LISTEN_FDS=0", "FIX_LISTEN_PID=1")
out, _ := cmd.CombinedOutput()
if !bytes.Contains(out, []byte("No files")) {
t.Fatalf("Child didn't error out as expected")
}
}
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