From a915fcba84ee53b32d0c5069c2b84162cdf0a9ea Mon Sep 17 00:00:00 2001
From: Toan Nguyen <hgiasac@gmail.com>
Date: Tue, 24 Sep 2024 10:01:21 +0700
Subject: [PATCH] fix unit tests

---
 utils/helper.go      | 13 +++++++++++++
 utils/helper_test.go |  9 ++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/utils/helper.go b/utils/helper.go
index 591ae24..9161668 100644
--- a/utils/helper.go
+++ b/utils/helper.go
@@ -3,6 +3,7 @@ package utils
 import (
 	"cmp"
 	"context"
+	"fmt"
 	"log/slog"
 	"reflect"
 	"slices"
@@ -80,6 +81,18 @@ func ToPtrs[T any](input []T) []*T {
 	return results
 }
 
+// PointersToValues converts the pointer slice to value slice
+func PointersToValues[T any](input []*T) ([]T, error) {
+	results := make([]T, len(input))
+	for i, v := range input {
+		if IsNil(v) {
+			return nil, fmt.Errorf("element at %d must not be nil", i)
+		}
+		results[i] = *v
+	}
+	return results, nil
+}
+
 // UnwrapPointerFromReflectValue unwraps pointers from the reflect value
 func UnwrapPointerFromReflectValue(reflectValue reflect.Value) (reflect.Value, bool) {
 	for reflectValue.Kind() == reflect.Pointer {
diff --git a/utils/helper_test.go b/utils/helper_test.go
index aa71332..e41c4a3 100644
--- a/utils/helper_test.go
+++ b/utils/helper_test.go
@@ -6,7 +6,14 @@ import (
 )
 
 func TestToPtrs(t *testing.T) {
-	assertDeepEqual(t, []*string{ToPtr("a"), ToPtr("b"), ToPtr("c")}, ToPtrs([]string{"a", "b", "c"}))
+	_, err := PointersToValues([]*string{ToPtr(""), nil})
+	assertError(t, err, "element at 1 must not be nil")
+	input, err := PointersToValues(ToPtrs([]string{"a", "b", "c"}))
+	assertNoError(t, err)
+	expected, err := PointersToValues([]*string{ToPtr("a"), ToPtr("b"), ToPtr("c")})
+	assertNoError(t, err)
+
+	assertDeepEqual(t, expected, input)
 }
 
 func TestIsDebug(t *testing.T) {