get the automated generation of test cases working again (#1448) #1574

Job	Run time
ASAN	6m 29s
Bazel	7m 15s
Test Big Endian	9m 50s
macOS	14m 12s
UBSAN	8m 26s
Ubuntu 18.04 (Build: Debug, Compilers: gcc-6/g++-6, Shared Library: true)	9m 46s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	9m 15s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: true)	20m 23s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	9m 7s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: false)	20m 3s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: true)	14m 29s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: true)	10m 51s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: false)	14m 45s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: false)	10m 54s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	14m 23s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	14m 5s
	3h 14m 13s

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