--- a/.clang-format-ignore
+++ b/.clang-format-ignore
@@ -1,20 +1,36 @@
-^build/clang-plugin/tests/.*
+^build/clang-plugin/.*
 ^config/gcc-stl-wrapper.template.h
 ^config/msvc-stl-wrapper.template.h
+^dom/base/test/.*
+^dom/bindings/test/.*
+^dom/media/gtest/.*
+^gfx/testsd/.*
+^image/test/.*
+^ipc/ipdl/test/.*
+^ipc/testshell/.*
+^js/src/jsapi-tests/.*
 ^layout/style/nsCSSPropAliasList.h
 ^layout/style/nsCSSPropList.h
-^js/src/jsapi-tests/.*
+^media/mtransport/test/.*
+^mfbt/tests/.*
+^storage/test/.*
+^testing/gtest/.*
+^tools/profiler/tests/.*
+^uriloader/exthandler/tests/.*
 ^widget/android/GeneratedJNINatives.h
 ^widget/android/GeneratedJNIWrappers.cpp
 ^widget/android/GeneratedJNIWrappers.h
 ^widget/android/fennec/FennecJNINatives.h
 ^widget/android/fennec/FennecJNIWrappers.cpp
 ^widget/android/fennec/FennecJNIWrappers.h
+^widget/tests/.*
+^xpcom/glue/tests/.*
+^xpcom/tests/.*
 
 # Generated from ./tools/rewriting/ThirdPartyPaths.txt
 # awk '{print "^"$1".*"}' ./tools/rewriting/ThirdPartyPaths.txt
 ^browser/components/translation/cld2/.*
 ^db/sqlite3/src/.*
 ^dom/media/platforms/ffmpeg/libav.*
 ^extensions/spellcheck/hunspell/src/.*
 ^gfx/angle/.*