Merge pull request #28644 from hashicorp/alisdair/length-lookup-marks-fixes
Improve marks support for `length` and `lookup`
This commit is contained in:
commit
fb53259907
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@ -20,6 +20,7 @@ var LengthFunc = function.New(&function.Spec{
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Type: cty.DynamicPseudoType,
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AllowDynamicType: true,
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AllowUnknown: true,
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AllowMarked: true,
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},
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},
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Type: func(args []cty.Value) (cty.Type, error) {
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@ -34,15 +35,16 @@ var LengthFunc = function.New(&function.Spec{
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Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
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coll := args[0]
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collTy := args[0].Type()
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marks := coll.Marks()
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switch {
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case collTy == cty.DynamicPseudoType:
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return cty.UnknownVal(cty.Number), nil
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return cty.UnknownVal(cty.Number).WithMarks(marks), nil
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case collTy.IsTupleType():
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l := len(collTy.TupleElementTypes())
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return cty.NumberIntVal(int64(l)), nil
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return cty.NumberIntVal(int64(l)).WithMarks(marks), nil
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case collTy.IsObjectType():
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l := len(collTy.AttributeTypes())
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return cty.NumberIntVal(int64(l)), nil
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return cty.NumberIntVal(int64(l)).WithMarks(marks), nil
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case collTy == cty.String:
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// We'll delegate to the cty stdlib strlen function here, because
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// it deals with all of the complexities of tokenizing unicode
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@ -212,12 +214,14 @@ var IndexFunc = function.New(&function.Spec{
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var LookupFunc = function.New(&function.Spec{
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Params: []function.Parameter{
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{
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Name: "inputMap",
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Type: cty.DynamicPseudoType,
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Name: "inputMap",
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Type: cty.DynamicPseudoType,
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AllowMarked: true,
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},
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{
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Name: "key",
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Type: cty.String,
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Name: "key",
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Type: cty.String,
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AllowMarked: true,
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},
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},
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VarParam: &function.Parameter{
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@ -226,6 +230,7 @@ var LookupFunc = function.New(&function.Spec{
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AllowUnknown: true,
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AllowDynamicType: true,
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AllowNull: true,
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AllowMarked: true,
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},
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Type: func(args []cty.Value) (ret cty.Type, err error) {
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if len(args) < 1 || len(args) > 3 {
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@ -240,7 +245,8 @@ var LookupFunc = function.New(&function.Spec{
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return cty.DynamicPseudoType, nil
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}
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key := args[1].AsString()
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keyVal, _ := args[1].Unmark()
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key := keyVal.AsString()
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if ty.HasAttribute(key) {
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return args[0].GetAttr(key).Type(), nil
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} else if len(args) == 3 {
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@ -266,23 +272,35 @@ var LookupFunc = function.New(&function.Spec{
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defaultValueSet := false
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if len(args) == 3 {
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// intentionally leave default value marked
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defaultVal = args[2]
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defaultValueSet = true
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}
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mapVar := args[0]
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lookupKey := args[1].AsString()
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// keep track of marks from the collection and key
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var markses []cty.ValueMarks
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// unmark collection, retain marks to reapply later
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mapVar, mapMarks := args[0].Unmark()
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markses = append(markses, mapMarks)
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// include marks on the key in the result
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keyVal, keyMarks := args[1].Unmark()
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if len(keyMarks) > 0 {
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markses = append(markses, keyMarks)
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}
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lookupKey := keyVal.AsString()
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if !mapVar.IsKnown() {
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return cty.UnknownVal(retType), nil
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return cty.UnknownVal(retType).WithMarks(markses...), nil
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}
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if mapVar.Type().IsObjectType() {
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if mapVar.Type().HasAttribute(lookupKey) {
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return mapVar.GetAttr(lookupKey), nil
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return mapVar.GetAttr(lookupKey).WithMarks(markses...), nil
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}
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} else if mapVar.HasIndex(cty.StringVal(lookupKey)) == cty.True {
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return mapVar.Index(cty.StringVal(lookupKey)), nil
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return mapVar.Index(cty.StringVal(lookupKey)).WithMarks(markses...), nil
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}
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if defaultValueSet {
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@ -290,10 +308,10 @@ var LookupFunc = function.New(&function.Spec{
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if err != nil {
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return cty.NilVal, err
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}
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return defaultVal, nil
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return defaultVal.WithMarks(markses...), nil
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}
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return cty.UnknownVal(cty.DynamicPseudoType), fmt.Errorf(
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return cty.UnknownVal(cty.DynamicPseudoType).WithMarks(markses...), fmt.Errorf(
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"lookup failed to find '%s'", lookupKey)
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},
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})
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@ -122,6 +122,54 @@ func TestLength(t *testing.T) {
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cty.DynamicVal,
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cty.UnknownVal(cty.Number),
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},
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{ // Marked collections return a marked length
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cty.ListVal([]cty.Value{
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cty.StringVal("hello"),
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cty.StringVal("world"),
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}).Mark("secret"),
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cty.NumberIntVal(2).Mark("secret"),
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},
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{ // Marks on values in unmarked collections do not propagate
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cty.ListVal([]cty.Value{
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cty.StringVal("hello").Mark("a"),
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cty.StringVal("world").Mark("b"),
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}),
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cty.NumberIntVal(2),
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},
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{ // Marked strings return a marked length
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cty.StringVal("hello world").Mark("secret"),
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cty.NumberIntVal(11).Mark("secret"),
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},
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{ // Marked tuples return a marked length
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cty.TupleVal([]cty.Value{
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cty.StringVal("hello"),
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cty.StringVal("world"),
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}).Mark("secret"),
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cty.NumberIntVal(2).Mark("secret"),
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},
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{ // Marks on values in unmarked tuples do not propagate
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cty.TupleVal([]cty.Value{
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cty.StringVal("hello").Mark("a"),
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cty.StringVal("world").Mark("b"),
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}),
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cty.NumberIntVal(2),
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},
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{ // Marked objects return a marked length
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cty.ObjectVal(map[string]cty.Value{
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"a": cty.StringVal("hello"),
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"b": cty.StringVal("world"),
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"c": cty.StringVal("nice to meet you"),
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}).Mark("secret"),
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cty.NumberIntVal(3).Mark("secret"),
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},
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{ // Marks on object attribute values do not propagate
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cty.ObjectVal(map[string]cty.Value{
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"a": cty.StringVal("hello").Mark("a"),
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"b": cty.StringVal("world").Mark("b"),
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"c": cty.StringVal("nice to meet you").Mark("c"),
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}),
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cty.NumberIntVal(3),
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},
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}
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for _, test := range tests {
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@ -747,6 +795,88 @@ func TestLookup(t *testing.T) {
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cty.DynamicVal, // if the key is unknown then we don't know which object attribute and thus can't know the type
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false,
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},
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{ // successful marked collection lookup returns marked value
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep"),
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}).Mark("a"),
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cty.StringVal("boop"),
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cty.StringVal("nope"),
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},
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cty.StringVal("beep").Mark("a"),
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false,
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},
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{ // apply collection marks to unknown return vaue
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep"),
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"frob": cty.UnknownVal(cty.String),
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}).Mark("a"),
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cty.StringVal("frob"),
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cty.StringVal("nope"),
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},
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cty.UnknownVal(cty.String).Mark("a"),
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false,
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},
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{ // propagate collection marks to default when returning
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep"),
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}).Mark("a"),
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cty.StringVal("frob"),
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cty.StringVal("nope").Mark("b"),
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},
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cty.StringVal("nope").WithMarks(cty.NewValueMarks("a", "b")),
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false,
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},
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{ // on unmarked collection, return only marks from found value
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep").Mark("a"),
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"frob": cty.StringVal("honk").Mark("b"),
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}),
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cty.StringVal("frob"),
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cty.StringVal("nope").Mark("c"),
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},
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cty.StringVal("honk").Mark("b"),
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false,
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},
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{ // on unmarked collection, return default exactly on missing
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep").Mark("a"),
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"frob": cty.StringVal("honk").Mark("b"),
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}),
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cty.StringVal("squish"),
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cty.StringVal("nope").Mark("c"),
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},
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cty.StringVal("nope").Mark("c"),
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false,
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},
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{ // retain marks on default if converted
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep").Mark("a"),
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"frob": cty.StringVal("honk").Mark("b"),
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}),
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cty.StringVal("squish"),
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cty.NumberIntVal(5).Mark("c"),
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},
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cty.StringVal("5").Mark("c"),
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false,
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},
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{ // propagate marks from key
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[]cty.Value{
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cty.MapVal(map[string]cty.Value{
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"boop": cty.StringVal("beep"),
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"frob": cty.StringVal("honk"),
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}),
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cty.StringVal("boop").Mark("a"),
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cty.StringVal("nope"),
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},
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cty.StringVal("beep").Mark("a"),
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false,
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},
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}
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for _, test := range tests {
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