Question

Should an Integration Test Test_Method call its individual test data once or should I setup the test data for ALL Test_Methods in a Setup method which is called before every Test_Method?

Answer 1

It depends if your tests are changing the values of the test data – because it could cause your subsequent tests to fail if value a is updated by test 1 to value b…and test 2 expects value b.

Otherwise, if your tests only read data and don’t change it then you could setup the data once, using something like NUnits [TestFixtureSetup] attribute, rather than the individual tests [SetUp] attribute, which you should use if you need the data resetting each time.