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opentf/internal/legacy/helper/schema/field_reader_config_test.go
Martin Atkins 868dc2f01b hcl2shim: Split out legacy subset 
Due to some past confusion about the purpose of this package, it has grown
to include a confusing mix of currently-viable code and legacy support
code from the move to HCL 2. This has in turn caused confusion about which
parts of this package _should_ be used for new code.

To help clarify that distinction we'll move the legacy support code into
a package under the "legacy" directory, which is also where most of its
callers live.

There are unfortunately still some callers to these outside of the legacy
tree, but the vast majority are either old tests written before HCL 2
adoption or helper code used only by those tests. The one dubious exception
is the use in ResourceInstanceObjectSrc.Decode, which makes a best effort
to shim flatmap as a concession to the fact that not all state-loading
codepaths are able to run the provider state upgrade function that would
normally be responsible for the flatmap-to-JSON conversion, which is
explained in a new comment inline.

Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
2025-07-10 08:13:25 -07:00

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// Copyright (c) The OpenTofu Authors
// SPDX-License-Identifier: MPL-2.0
// Copyright (c) 2023 HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package schema
import (
"bytes"
"fmt"
"reflect"
"testing"
"github.com/opentofu/opentofu/internal/legacy/hcl2shim"
"github.com/opentofu/opentofu/internal/legacy/helper/hashcode"
"github.com/opentofu/opentofu/internal/legacy/tofu"
)
func TestConfigFieldReader_impl(t *testing.T) {
var _ FieldReader = new(ConfigFieldReader)
}
func TestConfigFieldReader(t *testing.T) {
testFieldReader(t, func(s map[string]*Schema) FieldReader {
return &ConfigFieldReader{
Schema: s,
Config: testConfig(t, map[string]interface{}{
"bool": true,
"float": 3.1415,
"int": 42,
"string": "string",
"list": []interface{}{"foo", "bar"},
"listInt": []interface{}{21, 42},
"map": map[string]interface{}{
"foo": "bar",
"bar": "baz",
},
"mapInt": map[string]interface{}{
"one": "1",
"two": "2",
},
"mapIntNestedSchema": map[string]interface{}{
"one": "1",
"two": "2",
},
"mapFloat": map[string]interface{}{
"oneDotTwo": "1.2",
},
"mapBool": map[string]interface{}{
"True": "true",
"False": "false",
},
"set": []interface{}{10, 50},
"setDeep": []interface{}{
map[string]interface{}{
"index": 10,
"value": "foo",
},
map[string]interface{}{
"index": 50,
"value": "bar",
},
},
}),
}
})
}
// This contains custom table tests for our ConfigFieldReader
func TestConfigFieldReader_custom(t *testing.T) {
schema := map[string]*Schema{
"bool": &Schema{
Type: TypeBool,
},
}
cases := map[string]struct {
Addr []string
Result FieldReadResult
Config *tofu.ResourceConfig
Err bool
}{
"basic": {
[]string{"bool"},
FieldReadResult{
Value: true,
Exists: true,
},
testConfig(t, map[string]interface{}{
"bool": true,
}),
false,
},
"computed": {
[]string{"bool"},
FieldReadResult{
Exists: true,
Computed: true,
},
testConfig(t, map[string]interface{}{
"bool": hcl2shim.UnknownVariableValue,
}),
false,
},
}
for name, tc := range cases {
t.Run(name, func(t *testing.T) {
r := &ConfigFieldReader{
Schema: schema,
Config: tc.Config,
}
out, err := r.ReadField(tc.Addr)
if err != nil != tc.Err {
t.Fatalf("%s: err: %s", name, err)
}
if s, ok := out.Value.(*Set); ok {
// If it is a set, convert to a list so its more easily checked.
out.Value = s.List()
}
if !reflect.DeepEqual(tc.Result, out) {
t.Fatalf("%s: bad: %#v", name, out)
}
})
}
}
func TestConfigFieldReader_DefaultHandling(t *testing.T) {
schema := map[string]*Schema{
"strWithDefault": &Schema{
Type: TypeString,
Default: "ImADefault",
},
"strWithDefaultFunc": &Schema{
Type: TypeString,
DefaultFunc: func() (interface{}, error) {
return "FuncDefault", nil
},
},
}
cases := map[string]struct {
Addr []string
Result FieldReadResult
Config *tofu.ResourceConfig
Err bool
}{
"gets default value when no config set": {
[]string{"strWithDefault"},
FieldReadResult{
Value: "ImADefault",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{}),
false,
},
"config overrides default value": {
[]string{"strWithDefault"},
FieldReadResult{
Value: "fromConfig",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"strWithDefault": "fromConfig",
}),
false,
},
"gets default from function when no config set": {
[]string{"strWithDefaultFunc"},
FieldReadResult{
Value: "FuncDefault",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{}),
false,
},
"config overrides default function": {
[]string{"strWithDefaultFunc"},
FieldReadResult{
Value: "fromConfig",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"strWithDefaultFunc": "fromConfig",
}),
false,
},
}
for name, tc := range cases {
r := &ConfigFieldReader{
Schema: schema,
Config: tc.Config,
}
out, err := r.ReadField(tc.Addr)
if err != nil != tc.Err {
t.Fatalf("%s: err: %s", name, err)
}
if s, ok := out.Value.(*Set); ok {
// If it is a set, convert to a list so its more easily checked.
out.Value = s.List()
}
if !reflect.DeepEqual(tc.Result, out) {
t.Fatalf("%s: bad: %#v", name, out)
}
}
}
func TestConfigFieldReader_ComputedMap(t *testing.T) {
schema := map[string]*Schema{
"map": &Schema{
Type: TypeMap,
Computed: true,
},
"listmap": &Schema{
Type: TypeMap,
Computed: true,
Elem: TypeList,
},
"maplist": &Schema{
Type: TypeList,
Computed: true,
Elem: TypeMap,
},
}
cases := []struct {
Name string
Addr []string
Result FieldReadResult
Config *tofu.ResourceConfig
Err bool
}{
{
"set, normal",
[]string{"map"},
FieldReadResult{
Value: map[string]interface{}{
"foo": "bar",
},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"map": map[string]interface{}{
"foo": "bar",
},
}),
false,
},
{
"computed element",
[]string{"map"},
FieldReadResult{
Exists: true,
Computed: true,
},
testConfig(t, map[string]interface{}{
"map": map[string]interface{}{
"foo": hcl2shim.UnknownVariableValue,
},
}),
false,
},
{
"native map",
[]string{"map"},
FieldReadResult{
Value: map[string]interface{}{
"bar": "baz",
"baz": "bar",
},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"map": map[string]interface{}{
"bar": "baz",
"baz": "bar",
},
}),
false,
},
{
"map-from-list-of-maps",
[]string{"maplist", "0"},
FieldReadResult{
Value: map[string]interface{}{
"key": "bar",
},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"maplist": []interface{}{
map[string]interface{}{
"key": "bar",
},
},
}),
false,
},
{
"value-from-list-of-maps",
[]string{"maplist", "0", "key"},
FieldReadResult{
Value: "bar",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"maplist": []interface{}{
map[string]interface{}{
"key": "bar",
},
},
}),
false,
},
{
"list-from-map-of-lists",
[]string{"listmap", "key"},
FieldReadResult{
Value: []interface{}{"bar"},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"listmap": map[string]interface{}{
"key": []interface{}{
"bar",
},
},
}),
false,
},
{
"value-from-map-of-lists",
[]string{"listmap", "key", "0"},
FieldReadResult{
Value: "bar",
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"listmap": map[string]interface{}{
"key": []interface{}{
"bar",
},
},
}),
false,
},
}
for i, tc := range cases {
t.Run(fmt.Sprintf("%d-%s", i, tc.Name), func(t *testing.T) {
r := &ConfigFieldReader{
Schema: schema,
Config: tc.Config,
}
out, err := r.ReadField(tc.Addr)
if err != nil != tc.Err {
t.Fatal(err)
}
if s, ok := out.Value.(*Set); ok {
// If it is a set, convert to the raw map
out.Value = s.m
if len(s.m) == 0 {
out.Value = nil
}
}
if !reflect.DeepEqual(tc.Result, out) {
t.Fatalf("\nexpected: %#v\ngot: %#v", tc.Result, out)
}
})
}
}
func TestConfigFieldReader_ComputedSet(t *testing.T) {
schema := map[string]*Schema{
"strSet": &Schema{
Type: TypeSet,
Elem: &Schema{Type: TypeString},
Set: HashString,
},
}
cases := map[string]struct {
Addr []string
Result FieldReadResult
Config *tofu.ResourceConfig
Err bool
}{
"set, normal": {
[]string{"strSet"},
FieldReadResult{
Value: map[string]interface{}{
"1938594527": "foo",
},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"strSet": []interface{}{"foo"},
}),
false,
},
"set, computed element": {
[]string{"strSet"},
FieldReadResult{
Value: nil,
Exists: true,
Computed: true,
},
testConfig(t, map[string]interface{}{
"strSet": []interface{}{hcl2shim.UnknownVariableValue},
}),
false,
},
}
for name, tc := range cases {
r := &ConfigFieldReader{
Schema: schema,
Config: tc.Config,
}
out, err := r.ReadField(tc.Addr)
if err != nil != tc.Err {
t.Fatalf("%s: err: %s", name, err)
}
if s, ok := out.Value.(*Set); ok {
// If it is a set, convert to the raw map
out.Value = s.m
if len(s.m) == 0 {
out.Value = nil
}
}
if !reflect.DeepEqual(tc.Result, out) {
t.Fatalf("%s: bad: %#v", name, out)
}
}
}
func TestConfigFieldReader_computedComplexSet(t *testing.T) {
hashfunc := func(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["vhd_uri"].(string)))
return hashcode.String(buf.String())
}
schema := map[string]*Schema{
"set": &Schema{
Type: TypeSet,
Elem: &Resource{
Schema: map[string]*Schema{
"name": {
Type: TypeString,
Required: true,
},
"vhd_uri": {
Type: TypeString,
Required: true,
},
},
},
Set: hashfunc,
},
}
cases := map[string]struct {
Addr []string
Result FieldReadResult
Config *tofu.ResourceConfig
Err bool
}{
"set, normal": {
[]string{"set"},
FieldReadResult{
Value: map[string]interface{}{
"532860136": map[string]interface{}{
"name": "myosdisk1",
"vhd_uri": "bar",
},
},
Exists: true,
Computed: false,
},
testConfig(t, map[string]interface{}{
"set": []interface{}{
map[string]interface{}{
"name": "myosdisk1",
"vhd_uri": "bar",
},
},
}),
false,
},
}
for name, tc := range cases {
r := &ConfigFieldReader{
Schema: schema,
Config: tc.Config,
}
out, err := r.ReadField(tc.Addr)
if err != nil != tc.Err {
t.Fatalf("%s: err: %s", name, err)
}
if s, ok := out.Value.(*Set); ok {
// If it is a set, convert to the raw map
out.Value = s.m
if len(s.m) == 0 {
out.Value = nil
}
}
if !reflect.DeepEqual(tc.Result, out) {
t.Fatalf("%s: bad: %#v", name, out)
}
}
}
func testConfig(t *testing.T, raw map[string]interface{}) *tofu.ResourceConfig {
return tofu.NewResourceConfigRaw(raw)
}
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