Add integration test #232

Job	Run time
aarch64-apple-darwin	1s
aarch64-apple-darwin force-inprocess	1s
aarch64-apple-darwin async	1s
x86_64-apple-darwin	1s
x86_64-apple-darwin force-inprocess	1s
x86_64-apple-darwin async	1s
x86_64-unknown-linux-gnu	1m 8s
x86_64-unknown-linux-gnu force-inprocess	4h 5m 8s
x86_64-unknown-linux-gnu async	1m 12s
x86_64-pc-windows-msvc	2m 54s
x86_64-pc-windows-msvc force-inprocess	4h 4m 54s
x86_64-pc-windows-msvc async	3m 1s
i686-pc-windows-msvc	3m 45s
i686-pc-windows-msvc force-inprocess	4h 4m 56s
i686-pc-windows-msvc async	3m 11s
Result	1s
	12h 30m 16s

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