add test for slice to struct get processors

internal/processor/test/processor_test.go

@@ -10,11 +10,12 @@ import (
 )
 
 type TestStruct struct {
-	String string
-	Int    int
-	Float  float64
-	Bool   bool
-	Data   any
+	String   string
+	Int      int
+	Float    float64
+	Bool     bool
+	Data     any
+	IntSlice []int
 }
 
 func (t TestStruct) GetString() string {
@@ -37,6 +38,10 @@ func (t TestStruct) GetData() any {
 	return t.Data
 }
 
+func (t TestStruct) GetIntSlice() []int {
+	return t.IntSlice
+}
+
 func (t TestStruct) Void() {}
 
 type TestProcessor struct {