生成测试添加一个delegate类型 #194

Job	Run time
unittest-osx-dotnet	5m 50s
unittest-run-testcase-and-build-android	7m 4s
unittest-win-dotnet	8m 5s
unittest-linux-dotnet	4m 57s
unittest-run-android-in-linux	0s
	25m 56s

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