Basically:
CREATE TABLE [TEST].[TestHistory] (
[TestHistoryID] [int] IDENTITY(1,1) NOT NULL
,[AscendStudyID] [int] NOT NULL UNIQUE
,[Source] nvarchar(250) NOT NULL
,[TestSet] nvarchar(250) NOT NULL
,[SetDefinition] nvarchar(max) NULL
,[IEVSourceID] int NULL
,[Name] nvarchar(250) NOT NULL
,[TestInput] nvarchar(max) NULL
,[TestInputHash] AS CHECKSUM([TestInput]) PERSISTED
,[ExpectedOutput] nvarchar(max) NULL
,[ExpectedOutputHash] AS CHECKSUM([ExpectedOutput]) PERSISTED
,[TestOutput] nvarchar(max) NULL