Issue checkstyle#5897: verified all modules are in no exception configs

.ci/travis/travis.sh

@@ -387,6 +387,21 @@ check-missing-pitests)
   exit $fail
   ;;
 
+verify-no-exception-configs)
+  wget -q \
+    https://raw.githubusercontent.com/checkstyle/contribution/master/checkstyle-tester/checks-nonjavadoc-error.xml
+  wget -q \
+    https://raw.githubusercontent.com/checkstyle/contribution/master/checkstyle-tester/checks-only-javadoc-error.xml
+  xmlstarlet sel --net --template -m .//module -v "@name" \
+    -n checks-nonjavadoc-error.xml -n checks-only-javadoc-error.xml \
+    | grep -vE "Filter" | grep -v "^$" \
+    | sort | uniq | sed "s/Check$//" > web.txt
+  xmlstarlet sel --net --template -m .//module -v "@name" -n config/checkstyle_checks.xml \
+    | grep -vE "Filter|ImportControl" | grep -v "^$" \
+    | sort | uniq | sed "s/Check$//" > file.txt
+  diff -u web.txt file.txt
+  ;;
+
 *)
   echo "Unexpected argument: $1"
   sleep 5s

.travis.yml

@@ -248,6 +248,11 @@ matrix:
         - DESC="find missing pitests"
         - CMD="./.ci/travis/travis.sh check-missing-pitests"
 
+    # Ensure that all modules are used in no exception configs
+    - env:
+        - DESC="ensure that all modules are used in no exception configs"
+        - CMD="./.ci/travis/travis.sh verify-no-exception-configs"
+
 script:
   - SKIP_FILES1=".github|codeship-*|buddy.yml|appveyor.yml|circleci|distelli-manifest.yml"
   - SKIP_FILES2="|fast-forward-merge.sh|LICENSE|LICENSE.apache20|README.md|release.sh|RIGHTS.antlr"