terraform/command/meta_backend_test.go

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package command
import (
"io/ioutil"
"os"
"path/filepath"
"reflect"
"sort"
"testing"
2020-10-05 14:33:49 +02:00
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/backend"
"github.com/hashicorp/terraform/configs"
"github.com/hashicorp/terraform/helper/copy"
"github.com/hashicorp/terraform/plans"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/states/statefile"
"github.com/hashicorp/terraform/states/statemgr"
"github.com/mitchellh/cli"
"github.com/zclconf/go-cty/cty"
backendInit "github.com/hashicorp/terraform/backend/init"
backendLocal "github.com/hashicorp/terraform/backend/local"
backendInmem "github.com/hashicorp/terraform/backend/remote-state/inmem"
)
// Test empty directory with no config/state creates a local state.
func TestMetaBackend_emptyDir(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Get the backend
m := testMetaBackend(t, nil)
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Write some state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
s.WriteState(testState())
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify it exists where we expect it to
if isEmptyState(DefaultStateFilename) {
t.Fatalf("no state was written")
}
// Verify no backup since it was empty to start
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state should be empty")
}
// Verify no backend state was made
if !isEmptyState(filepath.Join(m.DataDir(), DefaultStateFilename)) {
t.Fatal("backend state should be empty")
}
}
// check for no state. Either the file doesn't exist, or is empty
func isEmptyState(path string) bool {
fi, err := os.Stat(path)
if os.IsNotExist(err) {
return true
}
if fi.Size() == 0 {
return true
}
return false
}
// Test a directory with a legacy state and no config continues to
// use the legacy state.
func TestMetaBackend_emptyWithDefaultState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Write the legacy state
statePath := DefaultStateFilename
{
f, err := os.Create(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
err = writeStateForTesting(testState(), f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
}
// Get the backend
m := testMetaBackend(t, nil)
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("err: %s", err)
}
if actual := s.State().String(); actual != testState().String() {
t.Fatalf("bad: %s", actual)
}
// Verify it exists where we expect it to
if _, err := os.Stat(DefaultStateFilename); err != nil {
t.Fatalf("err: %s", err)
}
stateName := filepath.Join(m.DataDir(), DefaultStateFilename)
if !isEmptyState(stateName) {
t.Fatal("expected no state at", stateName)
}
// Write some state
next := testState()
next.RootModule().SetOutputValue("foo", cty.StringVal("bar"), false)
s.WriteState(next)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify a backup was made since we're modifying a pre-existing state
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state should not be empty")
}
}
// Test an empty directory with an explicit state path (outside the dir)
func TestMetaBackend_emptyWithExplicitState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
os.MkdirAll(td, 0755)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Create another directory to store our state
stateDir := tempDir(t)
os.MkdirAll(stateDir, 0755)
defer os.RemoveAll(stateDir)
// Write the legacy state
statePath := filepath.Join(stateDir, "foo")
{
f, err := os.Create(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
err = writeStateForTesting(testState(), f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
}
// Setup the meta
m := testMetaBackend(t, nil)
m.statePath = statePath
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("err: %s", err)
}
if actual := s.State().String(); actual != testState().String() {
t.Fatalf("bad: %s", actual)
}
// Verify neither defaults exist
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
stateName := filepath.Join(m.DataDir(), DefaultStateFilename)
if !isEmptyState(stateName) {
t.Fatal("expected no state at", stateName)
}
// Write some state
next := testState()
markStateForMatching(next, "bar") // just any change so it shows as different than before
s.WriteState(next)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify a backup was made since we're modifying a pre-existing state
if isEmptyState(statePath + DefaultBackupExtension) {
t.Fatal("backup state should not be empty")
}
}
// Verify that interpolations result in an error
func TestMetaBackend_configureInterpolation(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-interp"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
_, err := m.Backend(&BackendOpts{Init: true})
if err == nil {
t.Fatal("should error")
}
}
// Newly configured backend
func TestMetaBackend_configureNew(t *testing.T) {
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state != nil {
t.Fatal("state should be nil")
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open("local-state.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify the default paths don't exist
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify a backup doesn't exist
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Newly configured backend with prior local state and no remote state
func TestMetaBackend_configureNewWithState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-migrate"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"yes"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
state, err := statemgr.RefreshAndRead(s)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if state == nil {
t.Fatal("state is nil")
}
if got, want := testStateMgrCurrentLineage(s), "backend-new-migrate"; got != want {
t.Fatalf("lineage changed during migration\nnow: %s\nwas: %s", got, want)
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
if err := statemgr.WriteAndPersist(s, state); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open("local-state.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup does exist
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state is empty or missing")
}
}
// Newly configured backend with matching local and remote state doesn't prompt
// for copy.
func TestMetaBackend_configureNewWithoutCopy(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-migrate"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
if err := copy.CopyFile(DefaultStateFilename, "local-state.tfstate"); err != nil {
t.Fatal(err)
}
// Setup the meta
m := testMetaBackend(t, nil)
m.input = false
// init the backend
_, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Verify the state is where we expect
f, err := os.Open("local-state.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
if actual.Lineage != "backend-new-migrate" {
t.Fatalf("incorrect state lineage: %q", actual.Lineage)
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup does exist
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state is empty or missing")
}
}
// Newly configured backend with prior local state and no remote state,
// but opting to not migrate.
func TestMetaBackend_configureNewWithStateNoMigrate(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-migrate"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"no"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
if state := s.State(); state != nil {
t.Fatal("state is not nil")
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup does exist
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state is empty or missing")
}
}
// Newly configured backend with prior local state and remote state
func TestMetaBackend_configureNewWithStateExisting(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-migrate-existing"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Setup the meta
m := testMetaBackend(t, nil)
// suppress input
m.forceInitCopy = true
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state is nil")
}
if got, want := testStateMgrCurrentLineage(s), "local"; got != want {
t.Fatalf("wrong lineage %q; want %q", got, want)
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open("local-state.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup does exist
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state is empty or missing")
}
}
// Newly configured backend with prior local state and remote state
func TestMetaBackend_configureNewWithStateExistingNoMigrate(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-new-migrate-existing"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"no"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state is nil")
}
if testStateMgrCurrentLineage(s) != "remote" {
t.Fatalf("bad: %#v", state)
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open("local-state.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup does exist
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup state is empty or missing")
}
}
// Saved backend state matching config
func TestMetaBackend_configuredUnchanged(t *testing.T) {
defer testChdir(t, testFixturePath("backend-unchanged"))()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("nil state")
}
if testStateMgrCurrentLineage(s) != "configuredUnchanged" {
t.Fatalf("bad: %#v", state)
}
// Verify the default paths don't exist
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify a backup doesn't exist
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Changing a configured backend
func TestMetaBackend_configuredChange(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"no"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state != nil {
t.Fatal("state should be nil")
}
// Verify the default paths don't exist
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify a backup doesn't exist
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open("local-state-2.tfstate")
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Reconfiguring with an already configured backend.
// This should ignore the existing backend config, and configure the new
// backend is if this is the first time.
func TestMetaBackend_reconfigureChange(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-single-to-single"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-single", backendLocal.TestNewLocalSingle)
defer backendInit.Set("local-single", nil)
// Setup the meta
m := testMetaBackend(t, nil)
// this should not ask for input
m.input = false
// cli flag -reconfigure
m.reconfigure = true
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
newState := s.State()
if newState != nil || !newState.Empty() {
t.Fatal("state should be nil/empty after forced reconfiguration")
}
// verify that the old state is still there
s = statemgr.NewFilesystem("local-state.tfstate")
if err := s.RefreshState(); err != nil {
t.Fatal(err)
}
oldState := s.State()
if oldState == nil || oldState.Empty() {
t.Fatal("original state should be untouched")
}
}
// Changing a configured backend, copying state
func TestMetaBackend_configuredChangeCopy(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"yes", "yes"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change" {
t.Fatalf("bad: %#v", state)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Changing a configured backend that supports only single states to another
// backend that only supports single states.
func TestMetaBackend_configuredChangeCopy_singleState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-single-to-single"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-single", backendLocal.TestNewLocalSingle)
defer backendInit.Set("local-single", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-copy-to-empty": "yes",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change" {
t.Fatalf("bad: %#v", state)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Changing a configured backend that supports multi-state to a
// backend that only supports single states. The multi-state only has
// a default state.
func TestMetaBackend_configuredChangeCopy_multiToSingleDefault(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-default-to-single"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-single", backendLocal.TestNewLocalSingle)
defer backendInit.Set("local-single", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-copy-to-empty": "yes",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change" {
t.Fatalf("bad: %#v", state)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
}
// Changing a configured backend that supports multi-state to a
// backend that only supports single states.
func TestMetaBackend_configuredChangeCopy_multiToSingle(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-to-single"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-single", backendLocal.TestNewLocalSingle)
defer backendInit.Set("local-single", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-multistate-to-single": "yes",
"backend-migrate-copy-to-empty": "yes",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change" {
t.Fatalf("bad: %#v", state)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
// Verify existing workspaces exist
envPath := filepath.Join(backendLocal.DefaultWorkspaceDir, "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatal("env should exist")
}
// Verify we are now in the default env, or we may not be able to access the new backend
env, err := m.Workspace()
if err != nil {
t.Fatal(err)
}
if env != backend.DefaultStateName {
t.Fatal("using non-default env with single-env backend")
}
}
// Changing a configured backend that supports multi-state to a
// backend that only supports single states.
func TestMetaBackend_configuredChangeCopy_multiToSingleCurrentEnv(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-to-single"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-single", backendLocal.TestNewLocalSingle)
defer backendInit.Set("local-single", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-multistate-to-single": "yes",
"backend-migrate-copy-to-empty": "yes",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Change env
if err := m.SetWorkspace("env2"); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change-env2" {
t.Fatalf("bad: %#v", state)
}
// Verify no local state
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatal("file should not exist")
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
// Verify existing workspaces exist
envPath := filepath.Join(backendLocal.DefaultWorkspaceDir, "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatal("env should exist")
}
}
// Changing a configured backend that supports multi-state to a
// backend that also supports multi-state.
func TestMetaBackend_configuredChangeCopy_multiToMulti(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-to-multi"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-multistate-to-multistate": "yes",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check resulting states
workspaces, err := b.Workspaces()
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
sort.Strings(workspaces)
expected := []string{"default", "env2"}
if !reflect.DeepEqual(workspaces, expected) {
t.Fatalf("bad: %#v", workspaces)
}
{
// Check the default state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change" {
t.Fatalf("bad: %#v", state)
}
}
{
// Check the other state
s, err := b.StateMgr("env2")
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change-env2" {
t.Fatalf("bad: %#v", state)
}
}
// Verify no local backup
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
{
// Verify existing workspaces exist
envPath := filepath.Join(backendLocal.DefaultWorkspaceDir, "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatalf("%s should exist, but does not", envPath)
}
}
{
// Verify new workspaces exist
envPath := filepath.Join("envdir-new", "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatalf("%s should exist, but does not", envPath)
}
}
}
// Changing a configured backend that supports multi-state to a
// backend that also supports multi-state, but doesn't allow a
// default state while the default state is non-empty.
func TestMetaBackend_configuredChangeCopy_multiToNoDefaultWithDefault(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-to-no-default-with-default"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-no-default", backendLocal.TestNewLocalNoDefault)
defer backendInit.Set("local-no-default", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-multistate-to-multistate": "yes",
"new-state-name": "env1",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check resulting states
workspaces, err := b.Workspaces()
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
sort.Strings(workspaces)
expected := []string{"env1", "env2"}
if !reflect.DeepEqual(workspaces, expected) {
t.Fatalf("bad: %#v", workspaces)
}
{
// Check the renamed default state
s, err := b.StateMgr("env1")
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change-env1" {
t.Fatalf("bad: %#v", state)
}
}
{
// Verify existing workspaces exist
envPath := filepath.Join(backendLocal.DefaultWorkspaceDir, "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatal("env should exist")
}
}
{
// Verify new workspaces exist
envPath := filepath.Join("envdir-new", "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatal("env should exist")
}
}
}
// Changing a configured backend that supports multi-state to a
// backend that also supports multi-state, but doesn't allow a
// default state while the default state is empty.
func TestMetaBackend_configuredChangeCopy_multiToNoDefaultWithoutDefault(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-change-multi-to-no-default-without-default"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Register the single-state backend
backendInit.Set("local-no-default", backendLocal.TestNewLocalNoDefault)
defer backendInit.Set("local-no-default", nil)
// Ask input
defer testInputMap(t, map[string]string{
"backend-migrate-multistate-to-multistate": "yes",
"select-workspace": "1",
})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check resulting states
workspaces, err := b.Workspaces()
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
sort.Strings(workspaces)
expected := []string{"env2"} // default is skipped because it is absent in the source backend
if !reflect.DeepEqual(workspaces, expected) {
t.Fatalf("wrong workspaces\ngot: %#v\nwant: %#v", workspaces, expected)
}
{
// Check the named state
s, err := b.StateMgr("env2")
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state should not be nil")
}
if testStateMgrCurrentLineage(s) != "backend-change-env2" {
t.Fatalf("bad: %#v", state)
}
}
{
// Verify existing workspaces exist
envPath := filepath.Join(backendLocal.DefaultWorkspaceDir, "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatalf("%s should exist, but does not", envPath)
}
}
{
// Verify new workspaces exist
envPath := filepath.Join("envdir-new", "env2", backendLocal.DefaultStateFilename)
if _, err := os.Stat(envPath); err != nil {
t.Fatalf("%s should exist, but does not", envPath)
}
}
}
// Unsetting a saved backend
func TestMetaBackend_configuredUnset(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-unset"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"no"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state != nil {
t.Fatal("state should be nil")
}
// Verify the default paths don't exist
if !isEmptyState(DefaultStateFilename) {
data, _ := ioutil.ReadFile(DefaultStateFilename)
t.Fatal("state should not exist, but contains:\n", string(data))
}
// Verify a backup doesn't exist
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
data, _ := ioutil.ReadFile(DefaultStateFilename + DefaultBackupExtension)
t.Fatal("backup should not exist, but contains:\n", string(data))
}
// Write some state
s.WriteState(testState())
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify it exists where we expect it to
if isEmptyState(DefaultStateFilename) {
t.Fatal(DefaultStateFilename, "is empty")
}
// Verify no backup since it was empty to start
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
data, _ := ioutil.ReadFile(DefaultStateFilename + DefaultBackupExtension)
t.Fatal("backup state should be empty, but contains:\n", string(data))
}
}
// Unsetting a saved backend and copying the remote state
func TestMetaBackend_configuredUnsetCopy(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-unset"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Ask input
defer testInteractiveInput(t, []string{"yes", "yes"})()
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("state is nil")
}
if got, want := testStateMgrCurrentLineage(s), "configuredUnset"; got != want {
t.Fatalf("wrong state lineage %q; want %q", got, want)
}
// Verify a backup doesn't exist
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatalf("backup state should be empty")
}
// Write some state
s.WriteState(testState())
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify it exists where we expect it to
if _, err := os.Stat(DefaultStateFilename); err != nil {
t.Fatalf("err: %s", err)
}
// Verify a backup since it wasn't empty to start
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup is empty")
}
}
// A plan that has uses the local backend
func TestMetaBackend_planLocal(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-plan-local"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
backendConfigBlock := cty.ObjectVal(map[string]cty.Value{
"path": cty.NullVal(cty.String),
"workspace_dir": cty.NullVal(cty.String),
})
backendConfigRaw, err := plans.NewDynamicValue(backendConfigBlock, backendConfigBlock.Type())
if err != nil {
t.Fatal(err)
}
backendConfig := plans.Backend{
Type: "local",
Config: backendConfigRaw,
Workspace: "default",
}
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.BackendForPlan(backendConfig)
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state != nil {
t.Fatalf("state should be nil: %#v", state)
}
// The default state file should not exist yet
if !isEmptyState(DefaultStateFilename) {
t.Fatal("expected empty state")
}
// A backup file shouldn't exist yet either.
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("expected empty backup")
}
// Verify we have no configured backend
path := filepath.Join(m.DataDir(), DefaultStateFilename)
if _, err := os.Stat(path); err == nil {
t.Fatalf("should not have backend configured")
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open(DefaultStateFilename)
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify no local backup
if !isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatalf("backup state should be empty")
}
}
// A plan with a custom state save path
func TestMetaBackend_planLocalStatePath(t *testing.T) {
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-plan-local"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
original := testState()
mark := markStateForMatching(original, "hello")
backendConfigBlock := cty.ObjectVal(map[string]cty.Value{
"path": cty.NullVal(cty.String),
"workspace_dir": cty.NullVal(cty.String),
})
backendConfigRaw, err := plans.NewDynamicValue(backendConfigBlock, backendConfigBlock.Type())
if err != nil {
t.Fatal(err)
}
plannedBackend := plans.Backend{
Type: "local",
Config: backendConfigRaw,
Workspace: "default",
}
// Create an alternate output path
statePath := "foo.tfstate"
// put an initial state there that needs to be backed up
err = (statemgr.NewFilesystem(statePath)).WriteState(original)
if err != nil {
t.Fatal(err)
}
// Setup the meta
m := testMetaBackend(t, nil)
m.stateOutPath = statePath
// Get the backend
b, diags := m.BackendForPlan(plannedBackend)
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state != nil {
t.Fatal("default workspace state is not nil, but should be because we've not put anything there")
}
// Verify the default path doesn't exist
if _, err := os.Stat(DefaultStateFilename); err == nil {
t.Fatalf("err: %s", err)
}
// Verify a backup doesn't exists
if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
t.Fatal("file should not exist")
}
// Verify we have no configured backend/legacy
path := filepath.Join(m.DataDir(), DefaultStateFilename)
if _, err := os.Stat(path); err == nil {
t.Fatalf("should not have backend configured")
}
// Write some state
state = states.NewState()
mark = markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify we have a backup
if isEmptyState(statePath + DefaultBackupExtension) {
t.Fatal("backup is empty")
}
}
// A plan that has no backend config, matching local state
func TestMetaBackend_planLocalMatch(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-plan-local-match"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
backendConfigBlock := cty.ObjectVal(map[string]cty.Value{
"path": cty.NullVal(cty.String),
"workspace_dir": cty.NullVal(cty.String),
})
backendConfigRaw, err := plans.NewDynamicValue(backendConfigBlock, backendConfigBlock.Type())
if err != nil {
t.Fatal(err)
}
backendConfig := plans.Backend{
Type: "local",
Config: backendConfigRaw,
Workspace: "default",
}
// Setup the meta
m := testMetaBackend(t, nil)
// Get the backend
b, diags := m.BackendForPlan(backendConfig)
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s, err := b.StateMgr(backend.DefaultStateName)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if err := s.RefreshState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
state := s.State()
if state == nil {
t.Fatal("should is nil")
}
if testStateMgrCurrentLineage(s) != "hello" {
t.Fatalf("bad: %#v", state)
}
// Verify the default path
if isEmptyState(DefaultStateFilename) {
t.Fatal("state is empty")
}
// Verify we have no configured backend/legacy
path := filepath.Join(m.DataDir(), DefaultStateFilename)
if _, err := os.Stat(path); err == nil {
t.Fatalf("should not have backend configured")
}
// Write some state
state = states.NewState()
mark := markStateForMatching(state, "changing")
s.WriteState(state)
if err := s.PersistState(); err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Verify the state is where we expect
{
f, err := os.Open(DefaultStateFilename)
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
assertStateHasMarker(t, actual.State, mark)
}
// Verify local backup
if isEmptyState(DefaultStateFilename + DefaultBackupExtension) {
t.Fatal("backup is empty")
}
}
// init a backend using -backend-config options multiple times
func TestMetaBackend_configureWithExtra(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("init-backend-empty"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
extras := map[string]cty.Value{"path": cty.StringVal("hello")}
m := testMetaBackend(t, nil)
opts := &BackendOpts{
ConfigOverride: configs.SynthBody("synth", extras),
Init: true,
}
_, cHash, err := m.backendConfig(opts)
if err != nil {
t.Fatal(err)
}
// init the backend
_, diags := m.Backend(&BackendOpts{
ConfigOverride: configs.SynthBody("synth", extras),
Init: true,
})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// Check the state
s := testDataStateRead(t, filepath.Join(DefaultDataDir, backendLocal.DefaultStateFilename))
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if s.Backend.Hash != uint64(cHash) {
t.Fatal("mismatched state and config backend hashes")
}
// init the backend again with the same options
m = testMetaBackend(t, nil)
_, err = m.Backend(&BackendOpts{
ConfigOverride: configs.SynthBody("synth", extras),
Init: true,
})
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Check the state
s = testDataStateRead(t, filepath.Join(DefaultDataDir, backendLocal.DefaultStateFilename))
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if s.Backend.Hash != uint64(cHash) {
t.Fatal("mismatched state and config backend hashes")
}
}
// when configuring a default local state, don't delete local state
func TestMetaBackend_localDoesNotDeleteLocal(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("init-backend-empty"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
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// // create our local state
orig := states.NewState()
orig.Module(addrs.RootModuleInstance).SetOutputValue("foo", cty.StringVal("bar"), false)
testStateFileDefault(t, orig)
m := testMetaBackend(t, nil)
m.forceInitCopy = true
// init the backend
_, diags := m.Backend(&BackendOpts{Init: true})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
// check that we can read the state
s := testStateRead(t, DefaultStateFilename)
if s.Empty() {
t.Fatal("our state was deleted")
}
}
// move options from config to -backend-config
func TestMetaBackend_configToExtra(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
copy.CopyDir(testFixturePath("init-backend"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// init the backend
m := testMetaBackend(t, nil)
_, err := m.Backend(&BackendOpts{
Init: true,
})
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
// Check the state
s := testDataStateRead(t, filepath.Join(DefaultDataDir, backendLocal.DefaultStateFilename))
backendHash := s.Backend.Hash
// init again but remove the path option from the config
cfg := "terraform {\n backend \"local\" {}\n}\n"
if err := ioutil.WriteFile("main.tf", []byte(cfg), 0644); err != nil {
t.Fatal(err)
}
// init the backend again with the options
extras := map[string]cty.Value{"path": cty.StringVal("hello")}
m = testMetaBackend(t, nil)
m.forceInitCopy = true
_, diags := m.Backend(&BackendOpts{
ConfigOverride: configs.SynthBody("synth", extras),
Init: true,
})
if diags.HasErrors() {
t.Fatal(diags.Err())
}
s = testDataStateRead(t, filepath.Join(DefaultDataDir, backendLocal.DefaultStateFilename))
if s.Backend.Hash == backendHash {
t.Fatal("state.Backend.Hash was not updated")
}
}
// no config; return inmem backend stored in state
func TestBackendFromState(t *testing.T) {
td := tempDir(t)
copy.CopyDir(testFixturePath("backend-from-state"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Setup the meta
m := testMetaBackend(t, nil)
// terraform caches a small "state" file that stores the backend config.
// This test must override m.dataDir so it loads the "terraform.tfstate" file in the
// test directory as the backend config cache
m.OverrideDataDir = td
stateBackend, diags := m.backendFromState()
if diags.HasErrors() {
t.Fatal(diags.Err())
}
if _, ok := stateBackend.(*backendInmem.Backend); !ok {
t.Fatal("did not get expected inmem backend")
}
}
func testMetaBackend(t *testing.T, args []string) *Meta {
var m Meta
m.Ui = new(cli.MockUi)
m.process(args)
f := m.extendedFlagSet("test")
if err := f.Parse(args); err != nil {
t.Fatalf("unexpected error: %s", err)
}
return &m
}