terraform/command/show_test.go

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package command
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
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"testing"
"github.com/google/go-cmp/cmp"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/configs/configschema"
"github.com/hashicorp/terraform/plans"
"github.com/hashicorp/terraform/providers"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/terraform"
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"github.com/mitchellh/cli"
"github.com/zclconf/go-cty/cty"
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)
func TestShow(t *testing.T) {
ui := new(cli.MockUi)
view, _ := testView(t)
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c := &ShowCommand{
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Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
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},
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}
args := []string{
"bad",
"bad",
}
if code := c.Run(args); code != 1 {
t.Fatalf("bad: \n%s", ui.OutputWriter.String())
}
}
func TestShow_noArgs(t *testing.T) {
// Get a temp cwd
tmp, cwd := testCwd(t)
defer testFixCwd(t, tmp, cwd)
// Create the default state
testStateFileDefault(t, testState())
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ui := new(cli.MockUi)
view, _ := testView(t)
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c := &ShowCommand{
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Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
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},
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}
if code := c.Run([]string{}); code != 0 {
t.Fatalf("bad: \n%s", ui.OutputWriter.String())
}
if !strings.Contains(ui.OutputWriter.String(), "# test_instance.foo:") {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
}
// https://github.com/hashicorp/terraform/issues/21462
func TestShow_aliasedProvider(t *testing.T) {
// Create the default state with aliased resource
testState := states.BuildState(func(s *states.SyncState) {
s.SetResourceInstanceCurrent(
addrs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test_instance",
Name: "foo",
}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
&states.ResourceInstanceObjectSrc{
// The weird whitespace here is reflective of how this would
// get written out in a real state file, due to the indentation
// of all of the containing wrapping objects and arrays.
AttrsJSON: []byte("{\n \"id\": \"bar\"\n }"),
Status: states.ObjectReady,
Dependencies: []addrs.ConfigResource{},
},
addrs.RootModuleInstance.ProviderConfigAliased(addrs.NewDefaultProvider("test"), "alias"),
)
})
statePath := testStateFile(t, testState)
stateDir := filepath.Dir(statePath)
defer os.RemoveAll(stateDir)
defer testChdir(t, stateDir)()
ui := new(cli.MockUi)
view, _ := testView(t)
c := &ShowCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
},
}
fmt.Println(os.Getwd())
// the statefile created by testStateFile is named state.tfstate
args := []string{"state.tfstate"}
if code := c.Run(args); code != 0 {
t.Fatalf("bad exit code: \n%s", ui.OutputWriter.String())
}
if strings.Contains(ui.OutputWriter.String(), "# missing schema for provider \"test.alias\"") {
t.Fatalf("bad output: \n%s", ui.OutputWriter.String())
}
}
func TestShow_noArgsNoState(t *testing.T) {
// Create the default state
statePath := testStateFile(t, testState())
stateDir := filepath.Dir(statePath)
defer os.RemoveAll(stateDir)
defer testChdir(t, stateDir)()
ui := new(cli.MockUi)
view, _ := testView(t)
c := &ShowCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
},
}
// the statefile created by testStateFile is named state.tfstate
args := []string{"state.tfstate"}
if code := c.Run(args); code != 0 {
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t.Fatalf("bad: \n%s", ui.OutputWriter.String())
}
}
func TestShow_plan(t *testing.T) {
planPath := testPlanFileNoop(t)
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ui := cli.NewMockUi()
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view, done := testView(t)
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c := &ShowCommand{
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Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
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},
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}
args := []string{
planPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
want := `Terraform will perform the following actions`
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got := done(t).Stdout()
if !strings.Contains(got, want) {
t.Errorf("missing expected output\nwant: %s\ngot:\n%s", want, got)
}
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}
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func TestShow_planWithChanges(t *testing.T) {
planPathWithChanges := showFixturePlanFile(t, plans.DeleteThenCreate)
ui := cli.NewMockUi()
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view, done := testView(t)
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c := &ShowCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(showFixtureProvider()),
Ui: ui,
View: view,
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},
}
args := []string{
planPathWithChanges,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
want := `test_instance.foo must be replaced`
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got := done(t).Stdout()
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if !strings.Contains(got, want) {
t.Errorf("missing expected output\nwant: %s\ngot:\n%s", want, got)
}
}
func TestShow_planWithForceReplaceChange(t *testing.T) {
// The main goal of this test is to see that the "replace by request"
// resource instance action reason can round-trip through a plan file and
// be reflected correctly in the "terraform show" output, the same way
// as it would appear in "terraform plan" output.
_, snap := testModuleWithSnapshot(t, "show")
plannedVal := cty.ObjectVal(map[string]cty.Value{
"id": cty.UnknownVal(cty.String),
"ami": cty.StringVal("bar"),
})
priorValRaw, err := plans.NewDynamicValue(cty.NullVal(plannedVal.Type()), plannedVal.Type())
if err != nil {
t.Fatal(err)
}
plannedValRaw, err := plans.NewDynamicValue(plannedVal, plannedVal.Type())
if err != nil {
t.Fatal(err)
}
plan := testPlan(t)
plan.Changes.SyncWrapper().AppendResourceInstanceChange(&plans.ResourceInstanceChangeSrc{
Addr: addrs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test_instance",
Name: "foo",
}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
ProviderAddr: addrs.AbsProviderConfig{
Provider: addrs.NewDefaultProvider("test"),
Module: addrs.RootModule,
},
ChangeSrc: plans.ChangeSrc{
Action: plans.CreateThenDelete,
Before: priorValRaw,
After: plannedValRaw,
},
ActionReason: plans.ResourceInstanceReplaceByRequest,
})
planFilePath := testPlanFile(
t,
snap,
states.NewState(),
plan,
)
ui := cli.NewMockUi()
view, done := testView(t)
c := &ShowCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(showFixtureProvider()),
Ui: ui,
View: view,
},
}
args := []string{
planFilePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
got := done(t).Stdout()
if want := `test_instance.foo will be replaced, as requested`; !strings.Contains(got, want) {
t.Errorf("wrong output\ngot:\n%s\n\nwant substring: %s", got, want)
}
if want := `Plan: 1 to add, 0 to change, 1 to destroy.`; !strings.Contains(got, want) {
t.Errorf("wrong output\ngot:\n%s\n\nwant substring: %s", got, want)
}
}
func TestShow_plan_json(t *testing.T) {
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planPath := showFixturePlanFile(t, plans.Create)
ui := new(cli.MockUi)
view, _ := testView(t)
c := &ShowCommand{
Meta: Meta{
testingOverrides: metaOverridesForProvider(showFixtureProvider()),
Ui: ui,
View: view,
},
}
args := []string{
"-json",
planPath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
}
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func TestShow_state(t *testing.T) {
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originalState := testState()
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statePath := testStateFile(t, originalState)
defer os.RemoveAll(filepath.Dir(statePath))
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ui := new(cli.MockUi)
view, _ := testView(t)
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c := &ShowCommand{
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Meta: Meta{
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
View: view,
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},
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}
args := []string{
statePath,
}
if code := c.Run(args); code != 0 {
t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
}
}
mildwonkey/b-show-state (#20032) * command/show: properly marshal attribute values to json marshalAttributeValues in jsonstate and jsonplan packages was returning a cty.Value, which json/encoding could not marshal. These functions now convert those cty.Values into json.RawMessages. * command/jsonplan: planned values should include resources that are not changing * command/jsonplan: return a filtered list of proposed 'after' attributes Previously, proposed 'after' attributes were not being shown if the attributes were not WhollyKnown. jsonplan now iterates through all the `after` attributes, omitting those which are not wholly known. The same was roughly true for after_unknown, and that structure is now correctly populated. In the future we may choose to filter the after_unknown structure to _only_ display unknown attributes, instead of all attributes. * command/jsonconfig: use a unique key for providers so that aliased providers don't get munged together This now uses the same "provider" key from configs.Module, e.g. `providername.provideralias`. * command/jsonplan: unknownAsBool needs to iterate through objects that are not wholly known * command/jsonplan: properly display actions as strings according to the RFC, instead of a plans.Action string. For example: a plans.Action string DeleteThenCreate should be displayed as ["delete", "create"] Tests have been updated to reflect this. * command/jsonplan: return "null" for unknown list items. The length of a list could be meaningful on its own, so we will turn unknowns into "null". The same is less likely true for maps and objects, so we will continue to omit unknown values from those.
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func TestShow_json_output(t *testing.T) {
fixtureDir := "testdata/show-json"
testDirs, err := ioutil.ReadDir(fixtureDir)
if err != nil {
t.Fatal(err)
}
for _, entry := range testDirs {
if !entry.IsDir() {
continue
}
t.Run(entry.Name(), func(t *testing.T) {
td := tempDir(t)
inputDir := filepath.Join(fixtureDir, entry.Name())
testCopyDir(t, inputDir, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
expectError := strings.Contains(entry.Name(), "error")
providerSource, close := newMockProviderSource(t, map[string][]string{
"test": []string{"1.2.3"},
})
defer close()
p := showFixtureProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
m := Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
ProviderSource: providerSource,
}
// init
ic := &InitCommand{
Meta: m,
}
if code := ic.Run([]string{}); code != 0 {
if expectError {
// this should error, but not panic.
return
}
t.Fatalf("init failed\n%s", ui.ErrorWriter)
}
pc := &PlanCommand{
Meta: m,
}
args := []string{
"-out=terraform.plan",
}
if code := pc.Run(args); code != 0 {
t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
}
// flush the plan output from the mock ui
ui.OutputWriter.Reset()
sc := &ShowCommand{
Meta: m,
}
args = []string{
"-json",
"terraform.plan",
}
defer os.Remove("terraform.plan")
if code := sc.Run(args); code != 0 {
t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
}
// compare ui output to wanted output
var got, want plan
gotString := ui.OutputWriter.String()
json.Unmarshal([]byte(gotString), &got)
wantFile, err := os.Open("output.json")
if err != nil {
t.Fatalf("err: %s", err)
}
defer wantFile.Close()
byteValue, err := ioutil.ReadAll(wantFile)
if err != nil {
t.Fatalf("err: %s", err)
}
json.Unmarshal([]byte(byteValue), &want)
if !cmp.Equal(got, want) {
t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want))
}
})
}
}
func TestShow_json_output_sensitive(t *testing.T) {
td := tempDir(t)
inputDir := "testdata/show-json-sensitive"
testCopyDir(t, inputDir, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
providerSource, close := newMockProviderSource(t, map[string][]string{"test": {"1.2.3"}})
defer close()
p := showFixtureSensitiveProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
m := Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
ProviderSource: providerSource,
}
// init
ic := &InitCommand{
Meta: m,
}
if code := ic.Run([]string{}); code != 0 {
t.Fatalf("init failed\n%s", ui.ErrorWriter)
}
// flush init output
ui.OutputWriter.Reset()
pc := &PlanCommand{
Meta: m,
}
args := []string{
"-out=terraform.plan",
}
if code := pc.Run(args); code != 0 {
fmt.Println(ui.OutputWriter.String())
t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
}
// flush the plan output from the mock ui
ui.OutputWriter.Reset()
sc := &ShowCommand{
Meta: m,
}
args = []string{
"-json",
"terraform.plan",
}
defer os.Remove("terraform.plan")
if code := sc.Run(args); code != 0 {
t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
}
// compare ui output to wanted output
var got, want plan
gotString := ui.OutputWriter.String()
json.Unmarshal([]byte(gotString), &got)
wantFile, err := os.Open("output.json")
if err != nil {
t.Fatalf("err: %s", err)
}
defer wantFile.Close()
byteValue, err := ioutil.ReadAll(wantFile)
if err != nil {
t.Fatalf("err: %s", err)
}
json.Unmarshal([]byte(byteValue), &want)
if !cmp.Equal(got, want) {
t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want))
}
}
// similar test as above, without the plan
func TestShow_json_output_state(t *testing.T) {
fixtureDir := "testdata/show-json-state"
testDirs, err := ioutil.ReadDir(fixtureDir)
if err != nil {
t.Fatal(err)
}
for _, entry := range testDirs {
if !entry.IsDir() {
continue
}
t.Run(entry.Name(), func(t *testing.T) {
td := tempDir(t)
inputDir := filepath.Join(fixtureDir, entry.Name())
testCopyDir(t, inputDir, td)
defer os.RemoveAll(td)
defer testChdir(t, td)()
providerSource, close := newMockProviderSource(t, map[string][]string{
"test": []string{"1.2.3"},
})
defer close()
p := showFixtureProvider()
ui := new(cli.MockUi)
view, _ := testView(t)
m := Meta{
testingOverrides: metaOverridesForProvider(p),
Ui: ui,
View: view,
ProviderSource: providerSource,
}
// init
ic := &InitCommand{
Meta: m,
}
if code := ic.Run([]string{}); code != 0 {
t.Fatalf("init failed\n%s", ui.ErrorWriter)
}
// flush the plan output from the mock ui
ui.OutputWriter.Reset()
sc := &ShowCommand{
Meta: m,
}
if code := sc.Run([]string{"-json"}); code != 0 {
t.Fatalf("wrong exit status %d; want 0\nstderr: %s", code, ui.ErrorWriter.String())
}
// compare ui output to wanted output
type state struct {
FormatVersion string `json:"format_version,omitempty"`
TerraformVersion string `json:"terraform_version"`
Values map[string]interface{} `json:"values,omitempty"`
}
var got, want state
gotString := ui.OutputWriter.String()
json.Unmarshal([]byte(gotString), &got)
wantFile, err := os.Open("output.json")
if err != nil {
t.Fatalf("err: %s", err)
}
defer wantFile.Close()
byteValue, err := ioutil.ReadAll(wantFile)
if err != nil {
t.Fatalf("err: %s", err)
}
json.Unmarshal([]byte(byteValue), &want)
if !cmp.Equal(got, want) {
t.Fatalf("wrong result:\n %v\n", cmp.Diff(got, want))
}
})
}
}
// showFixtureSchema returns a schema suitable for processing the configuration
// in testdata/show. This schema should be assigned to a mock provider
// named "test".
func showFixtureSchema() *providers.GetProviderSchemaResponse {
return &providers.GetProviderSchemaResponse{
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Provider: providers.Schema{
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"region": {Type: cty.String, Optional: true},
},
},
},
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ResourceTypes: map[string]providers.Schema{
"test_instance": {
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Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Optional: true, Computed: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
},
}
}
// showFixtureSensitiveSchema returns a schema suitable for processing the configuration
// in testdata/show. This schema should be assigned to a mock provider
// named "test". It includes a sensitive attribute.
func showFixtureSensitiveSchema() *providers.GetProviderSchemaResponse {
return &providers.GetProviderSchemaResponse{
Provider: providers.Schema{
Block: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"region": {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},
"ami": {Type: cty.String, Optional: true},
"password": {Type: cty.String, Optional: true, Sensitive: true},
},
},
},
},
}
}
// showFixtureProvider returns a mock provider that is configured for basic
// operation with the configuration in testdata/show. This mock has
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// GetSchemaResponse, PlanResourceChangeFn, and ApplyResourceChangeFn populated,
// with the plan/apply steps just passing through the data determined by
// Terraform Core.
func showFixtureProvider() *terraform.MockProvider {
p := testProvider()
p.GetProviderSchemaResponse = showFixtureSchema()
p.PlanResourceChangeFn = func(req providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse {
idVal := req.ProposedNewState.GetAttr("id")
amiVal := req.ProposedNewState.GetAttr("ami")
if idVal.IsNull() {
idVal = cty.UnknownVal(cty.String)
}
var reqRep []cty.Path
if amiVal.RawEquals(cty.StringVal("force-replace")) {
reqRep = append(reqRep, cty.GetAttrPath("ami"))
}
return providers.PlanResourceChangeResponse{
PlannedState: cty.ObjectVal(map[string]cty.Value{
"id": idVal,
"ami": amiVal,
}),
RequiresReplace: reqRep,
}
}
p.ApplyResourceChangeFn = func(req providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse {
idVal := req.PlannedState.GetAttr("id")
amiVal := req.PlannedState.GetAttr("ami")
if !idVal.IsKnown() {
idVal = cty.StringVal("placeholder")
}
return providers.ApplyResourceChangeResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": idVal,
"ami": amiVal,
}),
}
}
return p
}
// showFixtureSensitiveProvider returns a mock provider that is configured for basic
// operation with the configuration in testdata/show. This mock has
// GetSchemaResponse, PlanResourceChangeFn, and ApplyResourceChangeFn populated,
// with the plan/apply steps just passing through the data determined by
// Terraform Core. It also has a sensitive attribute in the provider schema.
func showFixtureSensitiveProvider() *terraform.MockProvider {
p := testProvider()
p.GetProviderSchemaResponse = showFixtureSensitiveSchema()
p.PlanResourceChangeFn = func(req providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse {
idVal := req.ProposedNewState.GetAttr("id")
if idVal.IsNull() {
idVal = cty.UnknownVal(cty.String)
}
return providers.PlanResourceChangeResponse{
PlannedState: cty.ObjectVal(map[string]cty.Value{
"id": idVal,
"ami": req.ProposedNewState.GetAttr("ami"),
"password": req.ProposedNewState.GetAttr("password"),
}),
}
}
p.ApplyResourceChangeFn = func(req providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse {
idVal := req.PlannedState.GetAttr("id")
if !idVal.IsKnown() {
idVal = cty.StringVal("placeholder")
}
return providers.ApplyResourceChangeResponse{
NewState: cty.ObjectVal(map[string]cty.Value{
"id": idVal,
"ami": req.PlannedState.GetAttr("ami"),
"password": req.PlannedState.GetAttr("password"),
}),
}
}
return p
}
// showFixturePlanFile creates a plan file at a temporary location containing a
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// single change to create or update the test_instance.foo that is included in the "show"
// test fixture, returning the location of that plan file.
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// `action` is the planned change you would like to elicit
func showFixturePlanFile(t *testing.T, action plans.Action) string {
_, snap := testModuleWithSnapshot(t, "show")
plannedVal := cty.ObjectVal(map[string]cty.Value{
"id": cty.UnknownVal(cty.String),
"ami": cty.StringVal("bar"),
})
priorValRaw, err := plans.NewDynamicValue(cty.NullVal(plannedVal.Type()), plannedVal.Type())
if err != nil {
t.Fatal(err)
}
plannedValRaw, err := plans.NewDynamicValue(plannedVal, plannedVal.Type())
if err != nil {
t.Fatal(err)
}
plan := testPlan(t)
plan.Changes.SyncWrapper().AppendResourceInstanceChange(&plans.ResourceInstanceChangeSrc{
Addr: addrs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test_instance",
Name: "foo",
}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
ProviderAddr: addrs.AbsProviderConfig{
Provider: addrs.NewDefaultProvider("test"),
Module: addrs.RootModule,
},
ChangeSrc: plans.ChangeSrc{
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Action: action,
Before: priorValRaw,
After: plannedValRaw,
},
})
return testPlanFile(
t,
snap,
states.NewState(),
plan,
)
}
// this simplified plan struct allows us to preserve field order when marshaling
// the command output. NOTE: we are leaving "terraform_version" out of this test
// to avoid needing to constantly update the expected output; as a potential
// TODO we could write a jsonplan compare function.
type plan struct {
FormatVersion string `json:"format_version,omitempty"`
Variables map[string]interface{} `json:"variables,omitempty"`
PlannedValues map[string]interface{} `json:"planned_values,omitempty"`
ResourceChanges []interface{} `json:"resource_changes,omitempty"`
OutputChanges map[string]interface{} `json:"output_changes,omitempty"`
PriorState priorState `json:"prior_state,omitempty"`
Config map[string]interface{} `json:"configuration,omitempty"`
}
type priorState struct {
FormatVersion string `json:"format_version,omitempty"`
Values map[string]interface{} `json:"values,omitempty"`
}