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conversion_test.go
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conversion_test.go
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package funcs
import (
"fmt"
"testing"
"github.com/hashicorp/terraform/internal/lang/marks"
"github.com/zclconf/go-cty/cty"
)
func TestTo(t *testing.T) {
tests := []struct {
Value cty.Value
TargetTy cty.Type
Want cty.Value
Err string
}{
{
cty.StringVal("a"),
cty.String,
cty.StringVal("a"),
``,
},
{
cty.UnknownVal(cty.String),
cty.String,
cty.UnknownVal(cty.String),
``,
},
{
cty.NullVal(cty.String),
cty.String,
cty.NullVal(cty.String),
``,
},
{
cty.StringVal("a").Mark("boop"),
cty.String,
cty.StringVal("a").Mark("boop"),
``,
},
{
cty.NullVal(cty.String).Mark("boop"),
cty.String,
cty.NullVal(cty.String).Mark("boop"),
``,
},
{
cty.True,
cty.String,
cty.StringVal("true"),
``,
},
{
cty.StringVal("a"),
cty.Bool,
cty.DynamicVal,
`cannot convert "a" to bool; only the strings "true" or "false" are allowed`,
},
{
cty.StringVal("a").Mark("boop"),
cty.Bool,
cty.DynamicVal,
`cannot convert "a" to bool; only the strings "true" or "false" are allowed`,
},
{
cty.StringVal("a").Mark(marks.Sensitive),
cty.Bool,
cty.DynamicVal,
`cannot convert this sensitive string to bool`,
},
{
cty.StringVal("a"),
cty.Number,
cty.DynamicVal,
`cannot convert "a" to number; given string must be a decimal representation of a number`,
},
{
cty.StringVal("a").Mark("boop"),
cty.Number,
cty.DynamicVal,
`cannot convert "a" to number; given string must be a decimal representation of a number`,
},
{
cty.StringVal("a").Mark(marks.Sensitive),
cty.Number,
cty.DynamicVal,
`cannot convert this sensitive string to number`,
},
{
cty.NullVal(cty.String),
cty.Number,
cty.NullVal(cty.Number),
``,
},
{
cty.UnknownVal(cty.Bool),
cty.String,
cty.UnknownVal(cty.String),
``,
},
{
cty.UnknownVal(cty.String),
cty.Bool,
cty.UnknownVal(cty.Bool), // conversion is optimistic
``,
},
{
cty.TupleVal([]cty.Value{cty.StringVal("hello"), cty.True}),
cty.List(cty.String),
cty.ListVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("true")}),
``,
},
{
cty.TupleVal([]cty.Value{cty.StringVal("hello"), cty.True}),
cty.Set(cty.String),
cty.SetVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("true")}),
``,
},
{
cty.ObjectVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.True}),
cty.Map(cty.String),
cty.MapVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.StringVal("true")}),
``,
},
{
cty.ObjectVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.StringVal("world").Mark("boop")}),
cty.Map(cty.String),
cty.MapVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.StringVal("world").Mark("boop")}),
``,
},
{
cty.ObjectVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.StringVal("world")}).Mark("boop"),
cty.Map(cty.String),
cty.MapVal(map[string]cty.Value{"foo": cty.StringVal("hello"), "bar": cty.StringVal("world")}).Mark("boop"),
``,
},
{
cty.TupleVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("world").Mark("boop")}),
cty.List(cty.String),
cty.ListVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("world").Mark("boop")}),
``,
},
{
cty.TupleVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("world")}).Mark("boop"),
cty.List(cty.String),
cty.ListVal([]cty.Value{cty.StringVal("hello"), cty.StringVal("world")}).Mark("boop"),
``,
},
{
cty.EmptyTupleVal,
cty.String,
cty.DynamicVal,
`cannot convert tuple to string`,
},
{
cty.UnknownVal(cty.EmptyTuple),
cty.String,
cty.DynamicVal,
`cannot convert tuple to string`,
},
{
cty.EmptyObjectVal,
cty.Object(map[string]cty.Type{"foo": cty.String}),
cty.DynamicVal,
`incompatible object type for conversion: attribute "foo" is required`,
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("to %s(%#v)", test.TargetTy.FriendlyNameForConstraint(), test.Value), func(t *testing.T) {
f := MakeToFunc(test.TargetTy)
got, err := f.Call([]cty.Value{test.Value})
if test.Err != "" {
if err == nil {
t.Fatal("succeeded; want error")
}
if got, want := err.Error(), test.Err; got != want {
t.Fatalf("wrong error\ngot: %s\nwant: %s", got, want)
}
return
} else if err != nil {
t.Fatalf("unexpected error: %s", err)
}
if !got.RawEquals(test.Want) {
t.Errorf("wrong result\ngot: %#v\nwant: %#v", got, test.Want)
}
})
}
}