c# - TDD nUnit multiple asserts for one method -

using tdd first time in life today. using nunit.

i have 1 method, can insert multiple different inputs , check if result works.

i read multiple asserts in 1 test not problem, , don't want write new test each input.

example multiple asserts:

    [testfixture] public class testclass {      public program test;      [setup]     public void init()     {         test = new program();      }     [test]     public void parse_simplevalues_calculated()     {         assert.areequal(25, test.parsecalculationstring("5*5"));         assert.areequal(125, test.parsecalculationstring("5*5*5"));         assert.areequal(10, test.parsecalculationstring("5+5"));         assert.areequal(15, test.parsecalculationstring("5+5+5"));         assert.areequal(50, test.parsecalculationstring("5*5+5*5"));         assert.areequal(3, test.parsecalculationstring("5-1*2"));         assert.areequal(7, test.parsecalculationstring("7+1-1"));     } } 

but when fails hard read assert failed, mean if have them lot, have go through , find right assert.

is there elegant way show input did set if assert fails, instead of result , expected result?

thank you.

i mean if have them lot, have go through all.

no don't - @ stack trace. if you're running tests within ide, find that's enough work out line failed.

that said, there is (significantly) better way - parameterized tests testcaseattribute. example:

[test] [testcase("5*5", 25)] [testcase("5*5*5", 125)] [testcase("5+5", 10)] // etc public void parse_simplevalues_calculated(string input, int expectedoutput) {     assert.areequal(expectedoutput, test.parsecalculationstring(input)); } 

now unit test runner show each test case separately, , you'll able see 1 fails. additionally, run all of tests, if 1 fails - don't end fixing 1 find next 1 failed unexpectedly.

there's testcasesourceattribute cases want specify collection of inputs separately - e.g. use across multiple tests.