Update and move testsuite to internal package (#730)

* Regenerate test suite

* Move test suite to /internal

internal/testsuite/parser.go

@@ -0,0 +1,69 @@
+package testsuite
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+
+	"github.com/pelletier/go-toml/v2"
+)
+
+type parser struct{}
+
+func (p parser) Decode(input string) (output string, outputIsError bool, retErr error) {
+	defer func() {
+		if r := recover(); r != nil {
+			switch rr := r.(type) {
+			case error:
+				retErr = rr
+			default:
+				retErr = fmt.Errorf("%s", rr)
+			}
+		}
+	}()
+
+	var v interface{}
+
+	if err := toml.Unmarshal([]byte(input), &v); err != nil {
+		return err.Error(), true, nil
+	}
+
+	j, err := json.MarshalIndent(addTag("", v), "", "  ")
+	if err != nil {
+		return "", false, retErr
+	}
+
+	return string(j), false, retErr
+}
+
+func (p parser) Encode(input string) (output string, outputIsError bool, retErr error) {
+	defer func() {
+		if r := recover(); r != nil {
+			switch rr := r.(type) {
+			case error:
+				retErr = rr
+			default:
+				retErr = fmt.Errorf("%s", rr)
+			}
+		}
+	}()
+
+	var tmp interface{}
+	err := json.Unmarshal([]byte(input), &tmp)
+	if err != nil {
+		return "", false, err
+	}
+
+	rm, err := rmTag(tmp)
+	if err != nil {
+		return err.Error(), true, retErr
+	}
+
+	buf := new(bytes.Buffer)
+	err = toml.NewEncoder(buf).Encode(rm)
+	if err != nil {
+		return err.Error(), true, retErr
+	}
+
+	return buf.String(), false, retErr
+}