Type Declaration Tests

Throw error and disable suite for duplicate testcases in describe ins… #1

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Job	Run time
linux (18.x, 3.9)	21s
linux (18.x, 4.3)	20s
linux (18.x, 4.4)	21s
linux (18.x, 4.5)	20s
linux (18.x, 4.6)	19s
linux (18.x, 4.7)	20s
linux (18.x, 4.8)	20s
linux (18.x, 4.9)	29s
linux (18.x, 5)	20s
	3m 10s