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|
package convert
import (
"fmt"
"reflect"
"testing"
"github.com/zclconf/go-cty/cty"
)
func TestConvertCapsuleType(t *testing.T) {
capTy := cty.CapsuleWithOps("test thingy", reflect.TypeOf(""), &cty.CapsuleOps{
GoString: func(rawV interface{}) string {
vPtr := rawV.(*string)
return fmt.Sprintf("capTy(%q)", *vPtr)
},
TypeGoString: func(ty reflect.Type) string {
return "capTy"
},
RawEquals: func(a, b interface{}) bool {
aPtr := a.(*string)
bPtr := b.(*string)
return *aPtr == *bPtr
},
ConversionFrom: func(srcTy cty.Type) func(interface{}, cty.Path) (cty.Value, error) {
if !srcTy.Equals(cty.String) {
return nil
}
return func(rawV interface{}, path cty.Path) (cty.Value, error) {
vPtr := rawV.(*string)
return cty.StringVal(*vPtr), nil
}
},
ConversionTo: func(dstTy cty.Type) func(cty.Value, cty.Path) (interface{}, error) {
if !dstTy.Equals(cty.String) {
return nil
}
return func(from cty.Value, path cty.Path) (interface{}, error) {
s := from.AsString()
return &s, nil
}
},
})
capVal := func(s string) cty.Value {
return cty.CapsuleVal(capTy, &s)
}
tests := []struct {
From cty.Value
To cty.Type
Want cty.Value
WantErr string
}{
{
From: capVal("hello"),
To: cty.String,
Want: cty.StringVal("hello"),
},
{
From: cty.StringVal("hello"),
To: capTy,
Want: capVal("hello"),
},
{
From: cty.True,
To: capTy,
WantErr: `test thingy required`,
},
{
From: capVal("hello"),
To: cty.Bool,
WantErr: `bool required`,
},
{
From: cty.UnknownVal(capTy),
To: cty.String,
Want: cty.UnknownVal(cty.String),
},
{
From: cty.NullVal(capTy),
To: cty.String,
Want: cty.NullVal(cty.String),
},
{
From: cty.UnknownVal(cty.Bool),
To: capTy,
WantErr: `test thingy required`,
},
{
From: cty.NullVal(cty.Bool),
To: capTy,
WantErr: `test thingy required`,
},
{
From: cty.UnknownVal(capTy),
To: cty.Bool,
WantErr: `bool required`,
},
{
From: cty.NullVal(capTy),
To: cty.Bool,
WantErr: `bool required`,
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%#v to %#v", test.From, test.To), func(t *testing.T) {
got, err := Convert(test.From, test.To)
if test.WantErr == "" {
if err != nil {
t.Fatalf("wrong error\nwant: <no error>\ngot: %s", err)
}
if !test.Want.RawEquals(got) {
t.Errorf("wrong result\nwant: %#v\ngot: %#v", got, test.Want)
}
} else {
if err == nil {
t.Fatalf("wrong error\nwant: %s\ngot: <no error>", test.WantErr)
}
if got, want := err.Error(), test.WantErr; got != want {
t.Errorf("wrong error\nwant: %s\ngot: %s", got, want)
}
}
})
}
}
|
