terraform/internal/backend/local/backend_refresh_test.go

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package local
import (
"context"
"fmt"
"strings"
"testing"
"github.com/hashicorp/terraform/internal/addrs"
"github.com/hashicorp/terraform/internal/backend"
"github.com/hashicorp/terraform/internal/command/arguments"
"github.com/hashicorp/terraform/internal/command/clistate"
"github.com/hashicorp/terraform/internal/command/views"
"github.com/hashicorp/terraform/internal/configs/configschema"
"github.com/hashicorp/terraform/internal/initwd"
"github.com/hashicorp/terraform/internal/providers"
"github.com/hashicorp/terraform/internal/states"
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"github.com/hashicorp/terraform/internal/terminal"
"github.com/hashicorp/terraform/internal/terraform"
"github.com/zclconf/go-cty/cty"
)
func TestLocal_refresh(t *testing.T) {
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b := TestLocal(t)
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p := TestLocalProvider(t, b, "test", refreshFixtureSchema())
testStateFile(t, b.StatePath, testRefreshState())
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p.ReadResourceFn = nil
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p.ReadResourceResponse = &providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
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"id": cty.StringVal("yes"),
})}
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op, configCleanup, done := testOperationRefresh(t, "./testdata/refresh")
defer configCleanup()
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defer done(t)
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
if !p.ReadResourceCalled {
t.Fatal("ReadResource should be called")
}
checkState(t, b.StateOutPath, `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`)
// the backend should be unlocked after a run
assertBackendStateUnlocked(t, b)
}
func TestLocal_refreshInput(t *testing.T) {
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b := TestLocal(t)
schema := &terraform.ProviderSchema{
Provider: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"value": {Type: cty.String, Optional: true},
},
},
ResourceTypes: map[string]*configschema.Block{
"test_instance": {
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Computed: true},
"foo": {Type: cty.String, Optional: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
}
p := TestLocalProvider(t, b, "test", schema)
testStateFile(t, b.StatePath, testRefreshState())
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p.ReadResourceFn = nil
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p.ReadResourceResponse = &providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
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"id": cty.StringVal("yes"),
})}
p.ConfigureProviderFn = func(req providers.ConfigureProviderRequest) (resp providers.ConfigureProviderResponse) {
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val := req.Config.GetAttr("value")
if val.IsNull() || val.AsString() != "bar" {
resp.Diagnostics = resp.Diagnostics.Append(fmt.Errorf("incorrect value %#v", val))
}
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return
}
// Enable input asking since it is normally disabled by default
b.OpInput = true
b.ContextOpts.UIInput = &terraform.MockUIInput{InputReturnString: "bar"}
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op, configCleanup, done := testOperationRefresh(t, "./testdata/refresh-var-unset")
defer configCleanup()
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defer done(t)
op.UIIn = b.ContextOpts.UIInput
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
if !p.ReadResourceCalled {
t.Fatal("ReadResource should be called")
}
checkState(t, b.StateOutPath, `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`)
}
func TestLocal_refreshValidate(t *testing.T) {
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b := TestLocal(t)
p := TestLocalProvider(t, b, "test", refreshFixtureSchema())
testStateFile(t, b.StatePath, testRefreshState())
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p.ReadResourceFn = nil
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p.ReadResourceResponse = &providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
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"id": cty.StringVal("yes"),
})}
// Enable validation
b.OpValidation = true
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op, configCleanup, done := testOperationRefresh(t, "./testdata/refresh")
defer configCleanup()
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defer done(t)
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
checkState(t, b.StateOutPath, `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`)
}
func TestLocal_refreshValidateProviderConfigured(t *testing.T) {
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b := TestLocal(t)
schema := &terraform.ProviderSchema{
Provider: &configschema.Block{
Attributes: map[string]*configschema.Attribute{
"value": {Type: cty.String, Optional: true},
},
},
ResourceTypes: map[string]*configschema.Block{
"test_instance": {
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Computed: true},
"ami": {Type: cty.String, Optional: true},
},
},
},
}
p := TestLocalProvider(t, b, "test", schema)
testStateFile(t, b.StatePath, testRefreshState())
p.ReadResourceFn = nil
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p.ReadResourceResponse = &providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
})}
// Enable validation
b.OpValidation = true
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op, configCleanup, done := testOperationRefresh(t, "./testdata/refresh-provider-config")
defer configCleanup()
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defer done(t)
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
if !p.ValidateProviderConfigCalled {
t.Fatal("Validate provider config should be called")
}
checkState(t, b.StateOutPath, `
test_instance.foo:
ID = yes
provider = provider["registry.terraform.io/hashicorp/test"]
`)
}
// This test validates the state lacking behavior when the inner call to
// Context() fails
func TestLocal_refresh_context_error(t *testing.T) {
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b := TestLocal(t)
testStateFile(t, b.StatePath, testRefreshState())
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op, configCleanup, done := testOperationRefresh(t, "./testdata/apply")
defer configCleanup()
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defer done(t)
// we coerce a failure in Context() by omitting the provider schema
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
if run.Result == backend.OperationSuccess {
t.Fatal("operation succeeded; want failure")
}
assertBackendStateUnlocked(t, b)
}
func TestLocal_refreshEmptyState(t *testing.T) {
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b := TestLocal(t)
p := TestLocalProvider(t, b, "test", refreshFixtureSchema())
testStateFile(t, b.StatePath, states.NewState())
p.ReadResourceFn = nil
p.ReadResourceResponse = &providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
"id": cty.StringVal("yes"),
})}
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op, configCleanup, done := testOperationRefresh(t, "./testdata/refresh")
defer configCleanup()
run, err := b.Operation(context.Background(), op)
if err != nil {
t.Fatalf("bad: %s", err)
}
<-run.Done()
output := done(t)
if stderr := output.Stderr(); stderr != "" {
t.Fatalf("expected only warning diags, got errors: %s", stderr)
}
if got, want := output.Stdout(), "Warning: Empty or non-existent state"; !strings.Contains(got, want) {
t.Errorf("wrong diags\n got: %s\nwant: %s", got, want)
}
// the backend should be unlocked after a run
assertBackendStateUnlocked(t, b)
}
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func testOperationRefresh(t *testing.T, configDir string) (*backend.Operation, func(), func(*testing.T) *terminal.TestOutput) {
t.Helper()
_, configLoader, configCleanup := initwd.MustLoadConfigForTests(t, configDir)
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streams, done := terminal.StreamsForTesting(t)
view := views.NewOperation(arguments.ViewHuman, false, views.NewView(streams))
return &backend.Operation{
Type: backend.OperationTypeRefresh,
ConfigDir: configDir,
ConfigLoader: configLoader,
StateLocker: clistate.NewNoopLocker(),
View: view,
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}, configCleanup, done
}
// testRefreshState is just a common state that we use for testing refresh.
func testRefreshState() *states.State {
state := states.NewState()
root := state.EnsureModule(addrs.RootModuleInstance)
root.SetResourceInstanceCurrent(
mustResourceInstanceAddr("test_instance.foo").Resource,
&states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
AttrsJSON: []byte(`{"id":"bar"}`),
},
mustProviderConfig(`provider["registry.terraform.io/hashicorp/test"]`),
)
return state
}
// refreshFixtureSchema returns a schema suitable for processing the
// configuration in testdata/refresh . This schema should be
// assigned to a mock provider named "test".
func refreshFixtureSchema() *terraform.ProviderSchema {
return &terraform.ProviderSchema{
ResourceTypes: map[string]*configschema.Block{
"test_instance": {
Attributes: map[string]*configschema.Attribute{
"ami": {Type: cty.String, Optional: true},
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"id": {Type: cty.String, Computed: true},
},
},
},
}
}