fix: clarify StringViewBuilder.UnmarshalOne expected type

arrow/array/string.go

@@ -778,7 +778,7 @@ func (b *StringViewBuilder) UnmarshalOne(dec *json.Decoder) error {
 	default:
 		return &json.UnmarshalTypeError{
 			Value:  fmt.Sprint(t),
-			Type:   reflect.TypeOf([]byte{}),
+			Type:   reflect.TypeOf(string("")),
 			Offset: dec.InputOffset(),
 		}
 	}

arrow/array/string_test.go

@@ -18,6 +18,7 @@ package array_test
 
 import (
 	"bytes"
+	"encoding/json"
 	"reflect"
 	"testing"
 
@@ -902,6 +903,24 @@ func TestStringViewBuilder_Empty(t *testing.T) {
 	a.Release()
 }
 
+func TestStringViewBuilderUnmarshalOneWrongType(t *testing.T) {
+	mem := memory.NewCheckedAllocator(memory.DefaultAllocator)
+	defer mem.AssertSize(t, 0)
+
+	bldr := array.NewStringViewBuilder(mem)
+	defer bldr.Release()
+
+	dec := json.NewDecoder(bytes.NewReader([]byte(`1`)))
+	err := bldr.UnmarshalOne(dec)
+
+	assert.Error(t, err)
+	var ute *json.UnmarshalTypeError
+	assert.ErrorAs(t, err, &ute)
+	if assert.NotNil(t, ute) {
+		assert.Equal(t, reflect.TypeOf(""), ute.Type)
+	}
+}
+
 // TestStringReset tests the Reset() method on the String type by creating two different Strings and then
 // resetting the contents of string2 with the values from string1.
 func TestStringViewReset(t *testing.T) {