Fix exclusion tests

[sharwell]

Previously most of our generated code exclusion tests were not running in most cases since we were passing an array containing a null element to the method which tests it.

[codecov-io]

Current coverage is 93.33%

Merging #2018 into stabilization will increase coverage by +0.08% as of a4258bb

@@            stabilization   #2018   diff @@
=============================================
  Files                 561     561       
  Stmts               35348   35348       
  Branches             2269    2268     -1
  Methods                                 
=============================================
+ Hit                 32965   32992    +27
  Partial               749     749       
+ Missed               1634    1607    -27

Review entire Coverage Diff as of a4258bb

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[sharwell]

According to codecov, the difference here is:

Before this change: 23 tests included automatic generated code testing.
After this change: 2743 tests include automatic generated code testing.

[vweijsters]

👍