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Copy pathremote_test.go
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135 lines (112 loc) · 2.89 KB
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package remote
import (
"bytes"
"io/ioutil"
"os"
"testing"
"github.com/hashicorp/terraform/state"
"github.com/hashicorp/terraform/terraform"
)
// testClient is a generic function to test any client.
func testClient(t *testing.T, c Client) {
var buf bytes.Buffer
s := state.TestStateInitial()
if err := terraform.WriteState(s, &buf); err != nil {
t.Fatalf("err: %s", err)
}
data := buf.Bytes()
if err := c.Put(data); err != nil {
t.Fatalf("put: %s", err)
}
p, err := c.Get()
if err != nil {
t.Fatalf("get: %s", err)
}
if !bytes.Equal(p.Data, data) {
t.Fatalf("bad: %#v", p)
}
if err := c.Delete(); err != nil {
t.Fatalf("delete: %s", err)
}
p, err = c.Get()
if err != nil {
t.Fatalf("get: %s", err)
}
if p != nil {
t.Fatalf("bad: %#v", p)
}
}
func TestRemoteClient_noPayload(t *testing.T) {
s := &State{
Client: nilClient{},
}
if err := s.RefreshState(); err != nil {
t.Fatal("error refreshing empty remote state")
}
}
// nilClient returns nil for everything
type nilClient struct{}
func (nilClient) Get() (*Payload, error) { return nil, nil }
func (c nilClient) Put([]byte) error { return nil }
func (c nilClient) Delete() error { return nil }
// ensure that remote state can be properly initialized
func TestRemoteClient_stateInit(t *testing.T) {
localStateFile, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatal(err)
}
// we need to remove the temp files so we recognize there's no local or
// remote state.
localStateFile.Close()
os.Remove(localStateFile.Name())
defer os.Remove(localStateFile.Name())
remoteStateFile, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatal(err)
}
remoteStateFile.Close()
os.Remove(remoteStateFile.Name())
defer os.Remove(remoteStateFile.Name())
// Now we need an empty state to initialize the state files.
newState := terraform.NewState()
newState.Remote = &terraform.RemoteState{
Type: "_local",
Config: map[string]string{"path": remoteStateFile.Name()},
}
remoteClient := &FileClient{
Path: remoteStateFile.Name(),
}
cache := &state.CacheState{
Cache: &state.LocalState{
Path: localStateFile.Name(),
},
Durable: &State{
Client: remoteClient,
},
}
// This will write the local state file, and set the state field in the CacheState
err = cache.WriteState(newState)
if err != nil {
t.Fatal(err)
}
// This will persist the local state we just wrote to the remote state file
err = cache.PersistState()
if err != nil {
t.Fatal(err)
}
// now compare the two state files just to be sure
localData, err := ioutil.ReadFile(localStateFile.Name())
if err != nil {
t.Fatal(err)
}
remoteData, err := ioutil.ReadFile(remoteStateFile.Name())
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(localData, remoteData) {
t.Log("state files don't match")
t.Log("Local:\n", string(localData))
t.Log("Remote:\n", string(remoteData))
t.Fatal("failed to initialize remote state")
}
}