terraform/command/refresh_test.go

794 lines
20 KiB
Go

package command
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/mitchellh/cli"
"github.com/zclconf/go-cty/cty"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/configs/configschema"
"github.com/hashicorp/terraform/providers"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/states/statefile"
"github.com/hashicorp/terraform/states/statemgr"
)
var equateEmpty = cmpopts.EquateEmpty()
func TestRefresh(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ReadResourceCalled {
t.Fatal("ReadResource should have been called")
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
newStateFile, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(newStateFile.State.String())
expected := strings.TrimSpace(testRefreshStr)
if actual != expected {
t.Fatalf("bad:\n\n%s", actual)
}
}
func TestRefresh_empty(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-empty"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if p.ReadResourceCalled {
t.Fatal("ReadResource should not have been called")
}
}
func TestRefresh_lockedState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
unlock, err := testLockState(testDataDir, statePath)
if err != nil {
t.Fatal(err)
}
defer unlock()
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code == 0 {
t.Fatal("expected error")
}
output := ui.ErrorWriter.String()
if !strings.Contains(output, "lock") {
t.Fatal("command output does not look like a lock error:", output)
}
}
func TestRefresh_cwd(t *testing.T) {
cwd, err := os.Getwd()
if err != nil {
t.Fatalf("err: %s", err)
}
if err := os.Chdir(testFixturePath("refresh")); err != nil {
t.Fatalf("err: %s", err)
}
defer os.Chdir(cwd)
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ReadResourceCalled {
t.Fatal("ReadResource should have been called")
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
newStateFile, err := statefile.Read(f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(newStateFile.State.String())
expected := strings.TrimSpace(testRefreshCwdStr)
if actual != expected {
t.Fatalf("bad:\n\n%s", actual)
}
}
func TestRefresh_defaultState(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
originalState := testState()
// Write the state file in a temporary directory with the
// default filename.
statePath := testStateFile(t, originalState)
localState := statemgr.NewFilesystem(statePath)
if err := localState.RefreshState(); err != nil {
t.Fatal(err)
}
s := localState.State()
if s == nil {
t.Fatal("empty test state")
}
// Change to that directory
cwd, err := os.Getwd()
if err != nil {
t.Fatalf("err: %s", err)
}
if err := os.Chdir(filepath.Dir(statePath)); err != nil {
t.Fatalf("err: %s", err)
}
defer os.Chdir(cwd)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ReadResourceCalled {
t.Fatal("ReadResource should have been called")
}
newState := testStateRead(t, statePath)
actual := newState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
expected := &states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
AttrsJSON: []byte("{\n \"ami\": null,\n \"id\": \"yes\"\n }"),
Dependencies: []addrs.ConfigResource{},
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("wrong new object\ngot: %swant: %s", spew.Sdump(actual), spew.Sdump(expected))
}
backupState := testStateRead(t, statePath+DefaultBackupExtension)
actual = backupState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
expected = originalState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("wrong new object\ngot: %swant: %s", spew.Sdump(actual), spew.Sdump(expected))
}
}
func TestRefresh_outPath(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
// Output path
outf, err := ioutil.TempFile(testingDir, "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
outPath := outf.Name()
outf.Close()
os.Remove(outPath)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
"-state-out", outPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
newState := testStateRead(t, statePath)
if !reflect.DeepEqual(newState, state) {
t.Fatalf("bad: %#v", newState)
}
newState = testStateRead(t, outPath)
actual := newState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
expected := &states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
AttrsJSON: []byte("{\n \"ami\": null,\n \"id\": \"yes\"\n }"),
Dependencies: []addrs.ConfigResource{},
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("wrong new object\ngot: %swant: %s", spew.Sdump(actual), spew.Sdump(expected))
}
if _, err := os.Stat(outPath + DefaultBackupExtension); !os.IsNotExist(err) {
if err != nil {
t.Fatalf("failed to test for backup file: %s", err)
}
t.Fatalf("backup file exists, but it should not because output file did not initially exist")
}
}
func TestRefresh_var(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-var"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshVarFixtureSchema()
args := []string{
"-var", "foo=bar",
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ConfigureCalled {
t.Fatal("configure should be called")
}
if got, want := p.ConfigureRequest.Config.GetAttr("value"), cty.StringVal("bar"); !want.RawEquals(got) {
t.Fatalf("wrong provider configuration\ngot: %#v\nwant: %#v", got, want)
}
}
func TestRefresh_varFile(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-var"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshVarFixtureSchema()
varFilePath := testTempFile(t)
if err := ioutil.WriteFile(varFilePath, []byte(refreshVarFile), 0644); err != nil {
t.Fatalf("err: %s", err)
}
args := []string{
"-var-file", varFilePath,
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ConfigureCalled {
t.Fatal("configure should be called")
}
if got, want := p.ConfigureRequest.Config.GetAttr("value"), cty.StringVal("bar"); !want.RawEquals(got) {
t.Fatalf("wrong provider configuration\ngot: %#v\nwant: %#v", got, want)
}
}
func TestRefresh_varFileDefault(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-var"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshVarFixtureSchema()
varFilePath := filepath.Join(td, "terraform.tfvars")
if err := ioutil.WriteFile(varFilePath, []byte(refreshVarFile), 0644); err != nil {
t.Fatalf("err: %s", err)
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.ConfigureCalled {
t.Fatal("configure should be called")
}
if got, want := p.ConfigureRequest.Config.GetAttr("value"), cty.StringVal("bar"); !want.RawEquals(got) {
t.Fatalf("wrong provider configuration\ngot: %#v\nwant: %#v", got, want)
}
}
func TestRefresh_varsUnset(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-unset-var"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
// Disable test mode so input would be asked
test = false
defer func() { test = true }()
defaultInputReader = bytes.NewBufferString("bar\n")
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = &providers.GetSchemaResponse{
ResourceTypes: map[string]providers.Schema{
"test_instance": {
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Optional: true, Computed: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
},
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
}
func TestRefresh_backup(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
// Output path
outf, err := ioutil.TempFile(testingDir, "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
outPath := outf.Name()
defer outf.Close()
// Need to put some state content in the output file so that there's
// something to back up.
err = statefile.Write(statefile.New(state, "baz", 0), outf)
if err != nil {
t.Fatalf("error writing initial output state file %s", err)
}
// Backup path
backupf, err := ioutil.TempFile(testingDir, "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
backupPath := backupf.Name()
backupf.Close()
os.Remove(backupPath)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("changed"),
}),
}
args := []string{
"-state", statePath,
"-state-out", outPath,
"-backup", backupPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
newState := testStateRead(t, statePath)
if !cmp.Equal(newState, state, cmpopts.EquateEmpty()) {
t.Fatalf("got:\n%s\nexpected:\n%s\n", newState, state)
}
newState = testStateRead(t, outPath)
actual := newState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
expected := &states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
AttrsJSON: []byte("{\n \"ami\": null,\n \"id\": \"changed\"\n }"),
Dependencies: []addrs.ConfigResource{},
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("wrong new object\ngot: %swant: %s", spew.Sdump(actual), spew.Sdump(expected))
}
backupState := testStateRead(t, backupPath)
actualStr := strings.TrimSpace(backupState.String())
expectedStr := strings.TrimSpace(state.String())
if actualStr != expectedStr {
t.Fatalf("bad:\n\n%s\n\n%s", actualStr, expectedStr)
}
}
func TestRefresh_disableBackup(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
// Output path
outf, err := ioutil.TempFile(testingDir, "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
outPath := outf.Name()
outf.Close()
os.Remove(outPath)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = refreshFixtureSchema()
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
}),
}
args := []string{
"-state", statePath,
"-state-out", outPath,
"-backup", "-",
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
newState := testStateRead(t, statePath)
if !cmp.Equal(state, newState, equateEmpty) {
spew.Config.DisableMethods = true
fmt.Println(cmp.Diff(state, newState, equateEmpty))
t.Fatalf("bad: %s", newState)
}
newState = testStateRead(t, outPath)
actual := newState.RootModule().Resources["test_instance.foo"].Instances[addrs.NoKey].Current
expected := &states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
AttrsJSON: []byte("{\n \"ami\": null,\n \"id\": \"yes\"\n }"),
Dependencies: []addrs.ConfigResource{},
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("wrong new object\ngot: %swant: %s", spew.Sdump(actual), spew.Sdump(expected))
}
// Ensure there is no backup
_, err = os.Stat(outPath + DefaultBackupExtension)
if err == nil || !os.IsNotExist(err) {
t.Fatalf("backup should not exist")
}
_, err = os.Stat("-")
if err == nil || !os.IsNotExist(err) {
t.Fatalf("backup should not exist")
}
}
func TestRefresh_displaysOutputs(t *testing.T) {
// Create a temporary working directory that is empty
td := tempDir(t)
testCopyDir(t, testFixturePath("refresh-output"), td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
state := testState()
statePath := testStateFile(t, state)
p := testProvider()
ui := new(cli.MockUi)
c := &RefreshCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
},
}
p.GetSchemaResponse = &providers.GetSchemaResponse{
ResourceTypes: map[string]providers.Schema{
"test_instance": {
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Optional: true, Computed: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
},
}
args := []string{
"-state", statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
// Test that outputs were displayed
outputValue := "foo.example.com"
actual := ui.OutputWriter.String()
if !strings.Contains(actual, outputValue) {
t.Fatalf("Expected:\n%s\n\nTo include: %q", actual, outputValue)
}
}
// configuration in testdata/refresh . This schema should be
// assigned to a mock provider named "test".
func refreshFixtureSchema() *providers.GetSchemaResponse {
return &providers.GetSchemaResponse{
ResourceTypes: map[string]providers.Schema{
"test_instance": {
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Optional: true, Computed: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
},
}
}
// refreshVarFixtureSchema returns a schema suitable for processing the
// configuration in testdata/refresh-var . This schema should be
// assigned to a mock provider named "test".
func refreshVarFixtureSchema() *providers.GetSchemaResponse {
return &providers.GetSchemaResponse{
Provider: providers.Schema{
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"value": {Type: cty.String, Optional: true},
},
},
},
ResourceTypes: map[string]providers.Schema{
"test_instance": {
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Optional: true, Computed: true},
},
},
},
},
}
}
const refreshVarFile = `
foo = "bar"
`
const testRefreshStr = `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`
const testRefreshCwdStr = `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`