diff --git a/ZA2X/CLAS/ZCL_EXCEL_COMMON.slnk b/ZA2X/CLAS/ZCL_EXCEL_COMMON.slnk
index 1aa55ef..e4dfd6d 100644
--- a/ZA2X/CLAS/ZCL_EXCEL_COMMON.slnk
+++ b/ZA2X/CLAS/ZCL_EXCEL_COMMON.slnk
@@ -86,6 +86,106 @@ protected section.
*"* implementation or private method's signature
*"* use this source file for any macro definitions you need
*"* in the implementation part of the class
+ *----------------------------------------------------------------------*
+* CLASS zcl_Excel_Common_Test DEFINITION
+*----------------------------------------------------------------------*
+*
+*----------------------------------------------------------------------*
+CLASS zcl_excel_common_test DEFINITION FOR TESTING
+ DURATION SHORT
+ RISK LEVEL HARMLESS
+.
+*?#<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
+*?<asx:values>
+*?<TESTCLASS_OPTIONS>
+*?<TEST_CLASS>zcl_Excel_Common_Test
+*?</TEST_CLASS>
+*?<TEST_MEMBER>f_Cut
+*?</TEST_MEMBER>
+*?<OBJECT_UNDER_TEST>ZCL_EXCEL_COMMON
+*?</OBJECT_UNDER_TEST>
+*?<OBJECT_IS_LOCAL/>
+*?<GENERATE_FIXTURE/>
+*?<GENERATE_CLASS_FIXTURE/>
+*?<GENERATE_INVOCATION>X
+*?</GENERATE_INVOCATION>
+*?<GENERATE_ASSERT_EQUAL>X
+*?</GENERATE_ASSERT_EQUAL>
+*?</TESTCLASS_OPTIONS>
+*?</asx:values>
+*?</asx:abap>
+ PRIVATE SECTION.
+* ================
+ DATA:
+ f_cut TYPE REF TO zcl_excel_common. "class under test
+
+ METHODS: convert_columnrow2column_a_row FOR TESTING.
+ENDCLASS. "zcl_Excel_Common_Test
+
+
+*----------------------------------------------------------------------*
+* CLASS zcl_Excel_Common_Test IMPLEMENTATION
+*----------------------------------------------------------------------*
+*
+*----------------------------------------------------------------------*
+CLASS zcl_excel_common_test IMPLEMENTATION.
+* ===========================================
+
+ METHOD convert_columnrow2column_a_row.
+* ======================================
+ DATA i_columnrow TYPE string VALUE 'AB344'.
+ DATA e_column TYPE zexcel_cell_column_alpha.
+ DATA e_row TYPE zexcel_cell_row.
+
+ zcl_excel_common=>convert_columnrow2column_a_row(
+ EXPORTING
+ i_columnrow = i_columnrow
+ IMPORTING
+ e_column = e_column
+ e_row = e_row
+ ).
+
+ cl_abap_unit_assert=>assert_equals(
+ act = e_column
+ exp = 'AB'
+ msg = 'Testing value e_Column'
+* level =
+ ).
+ cl_abap_unit_assert=>assert_equals(
+ act = e_row
+ exp = 344
+ msg = 'Testing value e_Row'
+* level =
+ ).
+
+ i_columnrow = 'B3'.
+
+ zcl_excel_common=>convert_columnrow2column_a_row(
+ EXPORTING
+ i_columnrow = i_columnrow
+ IMPORTING
+ e_column = e_column
+ e_row = e_row
+ ).
+
+ cl_abap_unit_assert=>assert_equals(
+ act = e_column
+ exp = 'B'
+ msg = 'Testing value e_Column'
+* level =
+ ).
+ cl_abap_unit_assert=>assert_equals(
+ act = e_row
+ exp = 3
+ msg = 'Testing value e_Row'
+* level =
+ ).
+ ENDMETHOD. "convert_Columnrow2column_A_Row
+
+
+
+
+ENDCLASS. "zcl_Excel_Common_Test