Add passing and failing tests for IncludeGuardsNotUsed exclusion check feedback (#1195)

* Add passing/failing tests for IncludeGuardsNotUsed exclusion behavior

Author: Copilot

c/common/test/rules/includeguardsnotused/IncludeGuardsNotUsed.expected

@@ -2,3 +2,4 @@
 | headers/test4.h:0:0:0:0 | headers/test4.h | Header file test4.h is missing expected include guard. | headers/test4.h:0:0:0:0 | headers/test4.h |  |
 | headers/test5.h:0:0:0:0 | headers/test5.h | Header file test5.h is missing expected include guard. | headers/test5.h:0:0:0:0 | headers/test5.h |  |
 | headers/test7.h:0:0:0:0 | headers/test7.h | Header file test7.h is never included by reusing the include guard used by $@. | headers/test6.h:0:0:0:0 | headers/test6.h | include guard |
+| headers/test8.h:0:0:0:0 | headers/test8.h | Header file test8.h is missing expected include guard. | headers/test8.h:0:0:0:0 | headers/test8.h |  |

c/common/test/rules/includeguardsnotused/headers/excluded/coding-standards.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" ?>
+<codingstandards>
+   <!--GENERATED: DO NOT MODIFY. Changes should be made to coding-standards.yml instead.-->
+   <deviations>
+      <deviations-entry>
+         <rule-id>cpp-test-dummy</rule-id>
+         <justification>This header is deliberately excluded to test the exclusion mechanism.</justification>
+      </deviations-entry>
+   </deviations>
+</codingstandards>

c/common/test/rules/includeguardsnotused/headers/excluded/coding-standards.yml

@@ -0,0 +1,3 @@
+deviations:
+  - rule-id: cpp-test-dummy
+    justification: This header is deliberately excluded to test the exclusion mechanism.

c/common/test/rules/includeguardsnotused/headers/excluded/test8.h

@@ -0,0 +1,2 @@
+// COMPLIANT - excluded via deviation
+int g7;

c/common/test/rules/includeguardsnotused/headers/test8.h

@@ -0,0 +1,2 @@
+// NON_COMPLIANT
+int g6;

c/common/test/rules/includeguardsnotused/test.c

@@ -11,4 +11,8 @@
 
 #include "headers/test6.h" //NON_COMPLIANT - non unique and reported in alert for the next
 
-#include "headers/test7.h" //NON_COMPLIANT - non unique
+#include "headers/test7.h" //NON_COMPLIANT - non unique
+
+#include "headers/test8.h" //NON_COMPLIANT - missing include guard, not excluded
+
+#include "headers/excluded/test8.h" //COMPLIANT - missing include guard, but excluded via deviation

cpp/common/test/rules/includeguardsnotused/IncludeGuardsNotUsed.expected

@@ -2,3 +2,4 @@
 | headers/test4.hpp:0:0:0:0 | headers/test4.hpp | Header file test4.hpp is missing expected include guard. | headers/test4.hpp:0:0:0:0 | headers/test4.hpp |  |
 | headers/test5.hpp:0:0:0:0 | headers/test5.hpp | Header file test5.hpp is missing expected include guard. | headers/test5.hpp:0:0:0:0 | headers/test5.hpp |  |
 | headers/test6.hpp:0:0:0:0 | headers/test6.hpp | Header file test6.hpp is missing expected include guard. | headers/test6.hpp:0:0:0:0 | headers/test6.hpp |  |
+| headers/test7.hpp:0:0:0:0 | headers/test7.hpp | Header file test7.hpp is missing expected include guard. | headers/test7.hpp:0:0:0:0 | headers/test7.hpp |  |

cpp/common/test/rules/includeguardsnotused/headers/excluded/coding-standards.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" ?>
+<codingstandards>
+   <!--GENERATED: DO NOT MODIFY. Changes should be made to coding-standards.yml instead.-->
+   <deviations>
+      <deviations-entry>
+         <rule-id>cpp-test-dummy</rule-id>
+         <justification>This header is deliberately excluded to test the exclusion mechanism.</justification>
+      </deviations-entry>
+   </deviations>
+</codingstandards>

cpp/common/test/rules/includeguardsnotused/headers/excluded/coding-standards.yml

@@ -0,0 +1,3 @@
+deviations:
+  - rule-id: cpp-test-dummy
+    justification: This header is deliberately excluded to test the exclusion mechanism.

cpp/common/test/rules/includeguardsnotused/headers/excluded/test7.hpp

@@ -0,0 +1,2 @@
+// COMPLIANT - excluded via deviation
+int g7;