terraform/command/apply_test.go

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package command
import (
"fmt"
"io/ioutil"
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"os"
"path/filepath"
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"reflect"
"sync"
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"testing"
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"time"
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"github.com/hashicorp/terraform/config"
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"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/cli"
)
func TestApply(t *testing.T) {
statePath := testTempFile(t)
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p := testProvider()
ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
Ui: ui,
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}
args := []string{
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"-init",
"-state", statePath,
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testFixturePath("apply"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
}
func TestApply_configInvalid(t *testing.T) {
p := testProvider()
ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
Ui: ui,
}
args := []string{
"-init",
"-state", testTempFile(t),
testFixturePath("apply-config-invalid"),
}
if code := c.Run(args); code != 1 {
t.Fatalf("bad: \n%s", ui.OutputWriter.String())
}
}
func TestApply_defaultState(t *testing.T) {
td, err := ioutil.TempDir("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
statePath := filepath.Join(td, DefaultStateFilename)
// Change to the temporary 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 := &ApplyCommand{
ContextOpts: testCtxConfig(p),
Ui: ui,
}
args := []string{
"-init",
testFixturePath("apply"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
}
func TestApply_error(t *testing.T) {
statePath := testTempFile(t)
p := testProvider()
ui := new(cli.MockUi)
c := &ApplyCommand{
ContextOpts: testCtxConfig(p),
Ui: ui,
}
var lock sync.Mutex
errored := false
p.ApplyFn = func(
s *terraform.ResourceState,
d *terraform.ResourceDiff) (*terraform.ResourceState, error) {
lock.Lock()
defer lock.Unlock()
if !errored {
errored = true
return nil, fmt.Errorf("error")
}
return &terraform.ResourceState{ID: "foo"}, nil
}
p.DiffFn = func(
*terraform.ResourceState,
*terraform.ResourceConfig) (*terraform.ResourceDiff, error) {
return &terraform.ResourceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"ami": &terraform.ResourceAttrDiff{
New: "bar",
},
},
}, nil
}
args := []string{
"-init",
"-state", statePath,
testFixturePath("apply-error"),
}
if code := c.Run(args); code != 1 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
if len(state.Resources) == 0 {
t.Fatal("no resources in state")
}
}
func TestApply_plan(t *testing.T) {
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planPath := testPlanFile(t, &terraform.Plan{
Config: new(config.Config),
})
statePath := testTempFile(t)
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p := testProvider()
ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
Ui: ui,
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}
args := []string{
"-state", statePath,
planPath,
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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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}
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
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if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
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state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
}
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func TestApply_shutdown(t *testing.T) {
stopped := false
stopCh := make(chan struct{})
stopReplyCh := make(chan struct{})
statePath := testTempFile(t)
p := testProvider()
shutdownCh := make(chan struct{})
ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
ShutdownCh: shutdownCh,
Ui: ui,
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}
p.DiffFn = func(
*terraform.ResourceState,
*terraform.ResourceConfig) (*terraform.ResourceDiff, error) {
return &terraform.ResourceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"ami": &terraform.ResourceAttrDiff{
New: "bar",
},
},
}, nil
}
p.ApplyFn = func(
*terraform.ResourceState,
*terraform.ResourceDiff) (*terraform.ResourceState, error) {
if !stopped {
stopped = true
close(stopCh)
<-stopReplyCh
}
return &terraform.ResourceState{
ID: "foo",
Attributes: map[string]string{
"ami": "2",
},
}, nil
}
go func() {
<-stopCh
shutdownCh <- struct{}{}
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// This is really dirty, but we have no other way to assure that
// tf.Stop() has been called. This doesn't assure it either, but
// it makes it much more certain.
time.Sleep(50 * time.Millisecond)
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close(stopReplyCh)
}()
args := []string{
"-init",
"-state", statePath,
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testFixturePath("apply-shutdown"),
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: %d\n\n%s", code, ui.ErrorWriter.String())
}
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
if len(state.Resources) != 1 {
t.Fatalf("bad: %d", len(state.Resources))
}
}
func TestApply_state(t *testing.T) {
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originalState := &terraform.State{
Resources: map[string]*terraform.ResourceState{
"test_instance.foo": &terraform.ResourceState{
ID: "bar",
Type: "test_instance",
},
},
}
statePath := testStateFile(t, originalState)
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p := testProvider()
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p.DiffReturn = &terraform.ResourceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"ami": &terraform.ResourceAttrDiff{
New: "bar",
},
},
}
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ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
Ui: ui,
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}
// Run the apply command pointing to our existing state
args := []string{
"-state", statePath,
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testFixturePath("apply"),
}
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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if !reflect.DeepEqual(p.ApplyState, expectedState) {
t.Fatalf("bad: %#v", p.ApplyState)
}
// Verify a new state exists
if _, err := os.Stat(statePath); err != nil {
t.Fatalf("err: %s", err)
}
f, err := os.Open(statePath)
if err != nil {
t.Fatalf("err: %s", err)
}
defer f.Close()
state, err := terraform.ReadState(f)
if err != nil {
t.Fatalf("err: %s", err)
}
if state == nil {
t.Fatal("state should not be nil")
}
}
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func TestApply_stateNoExist(t *testing.T) {
p := testProvider()
ui := new(cli.MockUi)
c := &ApplyCommand{
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ContextOpts: testCtxConfig(p),
Ui: ui,
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}
args := []string{
"idontexist.tfstate",
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testFixturePath("apply"),
}
if code := c.Run(args); code != 1 {
t.Fatalf("bad: \n%s", ui.OutputWriter.String())
}
}