Fix handling for HTML entities

Author: mbtools

src/zcl_htmldiff.clas.abap

@@ -17,7 +17,7 @@ CLASS zcl_htmldiff DEFINITION
 
   PUBLIC SECTION.
 
-    CONSTANTS c_version TYPE string VALUE '1.0.0' ##NEEDED.
+    CONSTANTS c_version TYPE string VALUE '1.0.1' ##NEEDED.
 
     INTERFACES zif_htmldiff.
 
@@ -762,8 +762,8 @@ CLASS zcl_htmldiff IMPLEMENTATION.
 
   METHOD is_character.
 
-    " Alphanumeric characters (includes underscore)
-    FIND REGEX '[\w]' IN iv_input.
+    " Alphanumeric characters (includes underscore) plus characters to identify HTML symbol entities
+    FIND REGEX '[\w&#;]' IN iv_input.
 
     rv_result = xsdbool( sy-subrc = 0 ).
 

src/zcl_htmldiff.clas.testclasses.abap

@@ -1208,3 +1208,58 @@ CLASS ltcl_render_operations IMPLEMENTATION.
   ENDMETHOD.
 
 ENDCLASS.
+
+************************************************************************
+* Tests for ABAP implementation
+************************************************************************
+
+CLASS ltcl_htmldiff_test_3 DEFINITION FOR TESTING
+  DURATION SHORT
+  RISK LEVEL HARMLESS.
+
+  PRIVATE SECTION.
+
+    METHODS:
+      html_symbol_entities FOR TESTING,
+      tags_and_entities FOR TESTING.
+
+ENDCLASS.
+
+CLASS ltcl_htmldiff_test_3 IMPLEMENTATION.
+
+  METHOD html_symbol_entities.
+
+    DATA:
+      lv_act TYPE string,
+      lv_exp TYPE string.
+
+    lv_act = lcl_helper=>htmldiff(
+      iv_before = 'a < c'
+      iv_after  = 'a > c' ).
+
+    lv_exp = 'a <del>&lt;</del><ins>&gt;</ins> c'.
+
+    cl_abap_unit_assert=>assert_equals(
+      act = lv_act
+      exp = lv_exp ).
+
+  ENDMETHOD.
+
+  METHOD tags_and_entities.
+
+    DATA:
+      lv_act TYPE string,
+      lv_exp TYPE string.
+
+    lv_act = lcl_helper=>htmldiff(
+      iv_before = '&lt;ls_var&gt;'
+      iv_after  = '<span class="keyword">FIELD-SYMBOL</span>(&lt;ls_var&gt;)' ).
+
+    lv_exp = '<span class="keyword"><ins>FIELD-SYMBOL</ins></span><ins>(</ins>&lt;ls_var&gt;<ins>)</ins>'.
+
+    cl_abap_unit_assert=>assert_equals(
+      act = lv_act
+      exp = lv_exp ).
+
+  ENDMETHOD.
+ENDCLASS.