terraform/command/plan_test.go

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package command
import (
"io/ioutil"
"os"
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"path/filepath"
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"reflect"
"testing"
"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/cli"
)
func TestPlan(t *testing.T) {
cwd, err := os.Getwd()
if err != nil {
t.Fatalf("err: %s", err)
}
if err := os.Chdir(testFixturePath("plan")); err != nil {
t.Fatalf("err: %s", err)
}
defer os.Chdir(cwd)
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
}
args := []string{}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
}
func TestPlan_destroy(t *testing.T) {
originalState := &terraform.State{
Resources: map[string]*terraform.ResourceState{
"test_instance.foo": &terraform.ResourceState{
ID: "bar",
Type: "test_instance",
},
},
}
outPath := testTempFile(t)
statePath := testStateFile(t, originalState)
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
}
args := []string{
"-destroy",
"-out", outPath,
"-state", statePath,
testFixturePath("plan"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if !p.RefreshCalled {
t.Fatal("refresh should be called")
}
plan := testReadPlan(t, outPath)
for _, r := range plan.Diff.Resources {
if !r.Destroy {
t.Fatalf("bad: %#v", r)
}
}
}
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func TestPlan_noState(t *testing.T) {
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p := testProvider()
ui := new(cli.MockUi)
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c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
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}
args := []string{
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testFixturePath("plan"),
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}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
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// Verify that refresh was called
if p.RefreshCalled {
t.Fatal("refresh should not be called")
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}
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// Verify that the provider was called with the existing state
expectedState := &terraform.ResourceState{
Type: "test_instance",
}
if !reflect.DeepEqual(p.DiffState, expectedState) {
t.Fatalf("bad: %#v", p.DiffState)
}
}
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func TestPlan_outPath(t *testing.T) {
tf, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
outPath := tf.Name()
os.Remove(tf.Name())
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
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}
p.DiffReturn = &terraform.ResourceDiff{
Destroy: true,
}
args := []string{
"-out", outPath,
testFixturePath("plan"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
f, err := os.Open(outPath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
if _, err := terraform.ReadPlan(f); err != nil {
t.Fatalf("err: %s", err)
}
}
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func TestPlan_refresh(t *testing.T) {
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
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}
args := []string{
"-refresh=false",
testFixturePath("plan"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if p.RefreshCalled {
t.Fatal("refresh should not be called")
}
}
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func TestPlan_state(t *testing.T) {
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// Write out some prior state
tf, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
statePath := tf.Name()
defer os.Remove(tf.Name())
originalState := &terraform.State{
Resources: map[string]*terraform.ResourceState{
"test_instance.foo": &terraform.ResourceState{
ID: "bar",
Type: "test_instance",
},
},
}
err = terraform.WriteState(originalState, tf)
tf.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
p := testProvider()
ui := new(cli.MockUi)
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c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
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}
args := []string{
"-state", statePath,
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testFixturePath("plan"),
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}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
// Verify that the provider was called with the existing state
expectedState := originalState.Resources["test_instance.foo"]
if !reflect.DeepEqual(p.DiffState, expectedState) {
t.Fatalf("bad: %#v", p.DiffState)
}
}
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func TestPlan_stateDefault(t *testing.T) {
originalState := &terraform.State{
Resources: map[string]*terraform.ResourceState{
"test_instance.foo": &terraform.ResourceState{
ID: "bar",
Type: "test_instance",
},
},
}
// Write the state file in a temporary directory with the
// default filename.
td, err := ioutil.TempDir("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
statePath := filepath.Join(td, DefaultStateFilename)
f, err := os.Create(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
err = terraform.WriteState(originalState, f)
f.Close()
if err != nil {
t.Fatalf("err: %s", err)
}
// 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 := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
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}
args := []string{
testFixturePath("plan"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
// Verify that the provider was called with the existing state
expectedState := originalState.Resources["test_instance.foo"]
if !reflect.DeepEqual(p.DiffState, expectedState) {
t.Fatalf("bad: %#v", p.DiffState)
}
}
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func TestPlan_vars(t *testing.T) {
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
}
actual := ""
p.DiffFn = func(
s *terraform.ResourceState,
c *terraform.ResourceConfig) (*terraform.ResourceDiff, error) {
if v, ok := c.Config["value"]; ok {
actual = v.(string)
}
return nil, nil
}
args := []string{
"-var", "foo=bar",
testFixturePath("plan-vars"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if actual != "bar" {
t.Fatal("didn't work")
}
}
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func TestPlan_varFile(t *testing.T) {
varFilePath := testTempFile(t)
if err := ioutil.WriteFile(varFilePath, []byte(planVarFile), 0644); err != nil {
t.Fatalf("err: %s", err)
}
p := testProvider()
ui := new(cli.MockUi)
c := &PlanCommand{
Meta: Meta{
ContextOpts: testCtxConfig(p),
Ui: ui,
},
}
actual := ""
p.DiffFn = func(
s *terraform.ResourceState,
c *terraform.ResourceConfig) (*terraform.ResourceDiff, error) {
if v, ok := c.Config["value"]; ok {
actual = v.(string)
}
return nil, nil
}
args := []string{
"-var-file", varFilePath,
testFixturePath("plan-vars"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if actual != "bar" {
t.Fatal("didn't work")
}
}
const planVarFile = `
foo = "bar"
`