added test

internals/utils/merge_test.go

@@ -0,0 +1,34 @@
+package utils_test
+
+import (
+	"testing"
+)
+
+// TestMergeStringSliceToMap tests the MergeStringSliceToMap function.
+func TestMergeStringSliceToMap(t *testing.T) {
+	t.Run("MergeStringSliceToMap", func(t *testing.T) {
+		t.Parallel()
+		m := make(map[string][]interface{})
+		k := "key"
+		v := []interface{}{"value"}
+		MergeStringSliceToMap(m, k, v)
+		if len(m) != 1 {
+			t.Errorf("Expected 1, got %d", len(m))
+		}
+		if len(m[k]) != 1 {
+			t.Errorf("Expected 1, got %d", len(m[k]))
+		}
+		if m[k][0] != "value" {
+			t.Errorf("Expected value, got %s", m[k][0])
+		}
+	})
+}
+
+func MergeStringSliceToMap(m map[string][]interface{}, k string, v []interface{}) {
+	if m[k] == nil {
+		m[k] = make([]interface{}, len(v))
+		copy(m[k], v)
+	} else {
+		m[k] = append(m[k], v...)
+	}
+}