c# - Unit test a function -



c# - Unit test a function -

i got intersting question while writing unit test.

can test function while using function in test code?

for example,

if have list<int> class has function called add().

i want test target list object 2 int inside: 1 , 2. add together 3rd number: 3, , want assert number added. wrote:

public void testmethod() { //initialize list<int> list = new list<int>(); list.add(1); list.add(2); //do operation list.add(3); assert.istrue(list.contains(3)); }

however, above test case, trying test target function: add(), uses add() initialize. thinking corelationship may result in problem under conditions, speaking...

is there test thoery saying cannot this?

thanks!

functions may require more 1 test. in case, have function tested single add(), , 1 have above. long both pass, can (reasonably) confident results solid. if first test fails, though, result of sec test should ignored.

ideally, though, you'd have access internal state of testing, , hence provide different way of setting intial conditions didn't involve calling function under test.

c# visual-studio unit-testing

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