Add test case for disapplied queries.

Author: rvermeulen

Diff for: cpp/common/test/guideline_recategorizations/DisappliedQuery.expected

@@ -0,0 +1 @@
+| a0-1-6.cpp:1:7:1:7 | A | Unused type declaration A is not reported with reason 'The query is disapplied.'. |

Diff for: cpp/common/test/guideline_recategorizations/DisappliedQuery.ql

@@ -0,0 +1,25 @@
+/**
+ * @id cpp/guideline-recategorizations/disapplied-query
+ * @name Query based on A0-1-6 to test disapplied category
+ * @kind problem
+ * @precision very-high
+ * @problem.severity warning
+ * @tags external/autosar/id/a0-1-6
+ *       external/autosar/obligation/advisory
+ */
+
+import cpp
+import codingstandards.cpp.CodingStandards
+import codingstandards.cpp.TypeUses
+import codingstandards.cpp.exclusions.cpp.RuleMetadata
+
+from UserType ut, string reason
+where
+  isExcluded(ut, DeadCodePackage::unusedTypeDeclarationsQuery(), reason) and
+  exists(ut.getFile()) and
+  not ut instanceof TemplateParameter and
+  not ut instanceof ProxyClass and
+  not exists(getATypeUse(ut)) and
+  not ut.isFromUninstantiatedTemplate(_)
+select ut,
+  "Unused type declaration " + ut.getName() + " is not reported with reason '" + reason + "'."

Diff for: cpp/common/test/guideline_recategorizations/a0-1-6.cpp

@@ -0,0 +1 @@
+class A {}; // Unused type declaration