JsMinify: Add more tests for new triggers

t/JsMinify.t

@@ -48,8 +48,13 @@ ddg_goodie_test(
     'javascript minifier' => build_test(),
     'js minify' => build_test(),
     'javascript minify' => build_test(),
+    'json minify' => build_test(),
+    'minify json' => build_test(),
+    'json minifier' => build_test(),
+    'minifier json' => build_test(),
 
     'minify css' => undef,
+    'js minify gulp' => undef,
 );
 
 done_testing;