terraform/state/local_test.go

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package state
import (
"io/ioutil"
"os"
"os/exec"
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"testing"
"github.com/hashicorp/terraform/terraform"
)
func TestLocalState(t *testing.T) {
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ls := testLocalState(t)
defer os.Remove(ls.Path)
TestState(t, ls)
}
func TestLocalStateLocks(t *testing.T) {
s := testLocalState(t)
defer os.Remove(s.Path)
// lock first
info := NewLockInfo()
info.Operation = "test"
lockID, err := s.Lock(info)
if err != nil {
t.Fatal(err)
}
out, err := exec.Command("go", "run", "testdata/lockstate.go", s.Path).CombinedOutput()
if err != nil {
t.Fatal("unexpected lock failure", err, string(out))
}
if string(out) != "lock failed" {
t.Fatal("expected 'locked failed', got", string(out))
}
// check our lock info
lockInfo, err := s.lockInfo()
if err != nil {
t.Fatal(err)
}
if lockInfo.Operation != "test" {
t.Fatalf("invalid lock info %#v\n", lockInfo)
}
// a noop, since we unlock on exit
if err := s.Unlock(lockID); err != nil {
t.Fatal(err)
}
// local locks can re-lock
lockID, err = s.Lock(info)
if err != nil {
t.Fatal(err)
}
if err := s.Unlock(lockID); err != nil {
t.Fatal(err)
}
// we should not be able to unlock the same lock twice
if err := s.Unlock(lockID); err == nil {
t.Fatal("unlocking an unlocked state should fail")
}
// make sure lock info is gone
lockInfoPath := s.lockInfoPath()
if _, err := os.Stat(lockInfoPath); !os.IsNotExist(err) {
t.Fatal("lock info not removed")
}
}
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// Verify that we can write to the state file, as Windows' mandatory locking
// will prevent writing to a handle different than the one that hold the lock.
func TestLocalState_writeWhileLocked(t *testing.T) {
s := testLocalState(t)
defer os.Remove(s.Path)
// lock first
info := NewLockInfo()
info.Operation = "test"
lockID, err := s.Lock(info)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := s.Unlock(lockID); err != nil {
t.Fatal(err)
}
}()
if err := s.WriteState(TestStateInitial()); err != nil {
t.Fatal(err)
}
}
func TestLocalState_pathOut(t *testing.T) {
f, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
f.Close()
defer os.Remove(f.Name())
ls := testLocalState(t)
ls.PathOut = f.Name()
defer os.Remove(ls.Path)
TestState(t, ls)
}
func TestLocalState_nonExist(t *testing.T) {
ls := &LocalState{Path: "ishouldntexist"}
if err := ls.RefreshState(); err != nil {
t.Fatalf("err: %s", err)
}
if state := ls.State(); state != nil {
t.Fatalf("bad: %#v", state)
}
}
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func TestLocalState_impl(t *testing.T) {
var _ StateReader = new(LocalState)
var _ StateWriter = new(LocalState)
var _ StatePersister = new(LocalState)
var _ StateRefresher = new(LocalState)
}
func testLocalState(t *testing.T) *LocalState {
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f, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
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err = terraform.WriteState(TestStateInitial(), f)
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f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
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ls := &LocalState{Path: f.Name()}
if err := ls.RefreshState(); err != nil {
t.Fatalf("bad: %s", err)
}
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return ls
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}