1 / 46

Nunit Quick Guide

Nunit Quick Guide. 목 차. Assert.That. Assert.That(bool) Assert.That(bool, string) Assert.That(bool, string, params object[]). Assert.AreEqual. Assert.AreEqual(expected, actual [, string message]) Assert.AreEqual(expected, actual, tolerance [, string message])

macy
Download Presentation

Nunit Quick Guide

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nunit Quick Guide

  2. 목 차 OS2 강의교재

  3. Assert.That Assert.That(bool) Assert.That(bool, string) Assert.That(bool, string, params object[]) Mona’s C#

  4. Assert.AreEqual • Assert.AreEqual(expected, actual [, string message]) • Assert.AreEqual(expected, actual, tolerance [, string message]) • 실수형 표기는 한계가 있음.Tolerance는 그 오차허용치를 지정함 • 그렇지 않으면 모두 실패로 뜸 Mona’s C#

  5. Assert.Less(x, y) Assert.Greater(x, y) Mona’s C#

  6. Assert.LessOrEqual(x, y) Assert.GreaterOrEqual(x, y) Mona’s C#

  7. Assert.IsNull(object [,string message]) Assert.IsNotNull(object [,string message]) Mona’s C#

  8. Assert.AreSame(expected, actual [,string message]) Mona’s C#

  9. Assert.IsTrue(bool condition [,string message]) Assert.IsFalse(bool condition [,string message]) Mona’s C#

  10. Assert.Fail([string message]) Mona’s C#

  11. Contraint-based Assert Mona’s C#

  12. Nunit.Framework.SyntaxHelpers • Is.EqualTo() • Assert.That(actual, Is.EqualTo(expected)) • Is.Not.EqualTo() • Assert.That(actual, Is.Not.EqualTo(expected)) • Is.AtMost() • Assert.That(actual, Is.AtMost(expected)) • Is.LessThenOrEqualTo()의 Alias method • Is.Null() • Assert.That(expected, Is.Null); • Is.Not.Null() • Assert.That(expected, Is.Not.Null); • Assert.That(expected, !Is.Null); Mona’s C#

  13. Is.Empty() • Assert.That(expected, Is.Empty); • Is.AtLeast() • Assert.That(actual, Is.AtLeast(expected); • Is.InstanceOfType • Assert.That(actual, Is.InstanceOfType(expected)); • Has.Length() • Assert.That(actual, Has.Length(expected)); Mona’s C#

  14. nunit-console nunit-console library.dll /fixture:ClassName Mona’s C#

  15. Setup attribute TSP tsp; [Setup] public void Setup() { tsp = new TSP(); } Mona’s C#

  16. Category [Category(“Long”)] Public void UseCities() { Assert.That(tsp.ShortestPath(5), Is.AtMost(140)); } Mona’s C#

  17. Setup Test TearDown Mona’s C#

  18. [TestFixtureSetUp] [TestFixtureTearDown] 클래스 단위로 설정하고 정리하는 작업이 필요할 때 Mona’s C#

  19. List.Contains • Assert.That({1,2,3}, List.Contains(2)); • Is.SubsetOf • Assert.That(new byte[]{1,2,3}, IsSubsetOf(new byte[]{ 1,2,3,4,5}); • Text.StartsWith • Assert.That(“header:data.”, Text.StartsWith(“header:”)); • Assert.That(“header:data.”, Text.StartsWith(“headeR:”).IgnoreCase); • Text.Matches • Assert.That(“header:data.”, Text.Matches(@”header.*\.”)); Mona’s C#

  20. FileAssert Stream expectedStream = File.OpenRead(“expected.bin”); Stream actualStream = File.OpenRead(“actual.bin”); Assert.That( actualStream, isEqualTo(expectedStream) ); FileAssert.AreEqual/AreNotEqual FileAssert.AreEqual(FileInfo expected, FileInfo actual) FileAssert.AreEqual(string pathToExpected, string pathToActual) Ex. 스트림이 바이트 단위로 일치하는지 확인 Mona’s C#

  21. Custom Assert using System; using NUnit.Framework; using NUnit.Framework.SyntaxHelpers; public class MoneyAssert { // Assert that the amount of money is an even // number of dollars (no cents) public static void AssertNoCents(Money amount, String message) { Assert.That( Decimal.Truncate(amount.AsDecimal()), Is.EqualTo(amount.AsDecimal()), message); } // Assert that the amount of money is an even // number of dollars (no cents) public static void AssertNoCents(Money amount) { AssertNoCents(amount, String.Empty); } } Mona’s C#

  22. Testing Exception test to ensure that the exception is thrown as expected. [Test] public void NullList() { try { WhitePages.ImportList(null); Assert.Fail("ArgumentNullException should have been thrown" ); } catch (ArgumentNullException) { } } Mona’s C#

  23. [TestFixture] public class ImportListTests { [Test] [ExpectedException(typeof(ArgumentNullException))] public void NullList() { WhitePages.ImportList(null); // Shouldn’t get to here } } Mona’s C#

  24. Ignoring Test [Test] [Ignore("Out of time. Will Continue Monday. --AH" )] public void Something() { xxx xxx xxxxxx xxxxx xxxx; } ExceptionTest.cs NUnit will report Mona’s C#

  25. Ignoring Platform Dependent Test [Test] [Platform(Exclude = "Mono" )] public void RemoveOnEmpty() { xxx xx xxx xxxxx xx xx xxx; } [Test, Platform(Exclude = "Net-1.0,Win95" )] public void EmptyStatusBar() { xxx xx xxx xxxxx xx xx xxx; } Mona’s C#

  26. What To Test? • Right BICEP • Right: Right Results? • B: Boundary condition • I: check Inverse Relationships • C: Cross-check results using other means • E: force Error conditions to happen • P: Performance characteristics within bounds Mona’s C#

  27. Using Data Files using NUnit.Framework; using NUnit.Framework.SyntaxHelpers; using System; using System.IO; using System.Collections.Generic; [TestFixture] public class LargestDataFileTests { private int[] getNumberList(string line) { string[] tokens = line.Split(null); List<int> numberList = new List<int>(); for (int i=1; i < tokens.Length; i++) { numberList.Add(Int32.Parse(tokens[i])); } return numberList.ToArray(); } Mona’s C#

  28. private int getLargestNumber(string line) { string[] tokens = line.Split(null); string val = tokens[0]; int expected = Int32.Parse(val); return expected; } private bool hasComment(string line) { return line.StartsWith("#" ); } Mona’s C#

  29. // Run all the tests in testdata.txt (does not test // exception case). We’ll get an error if any of the // file I/O goes wrong. [Test] public void FromFile() { string line; // most IDEs output the test bi- nary in bin/[Debug,Release] StreamReader reader = new StreamReader("../../testdata.txt" ); while ((line = reader.ReadLine()) != null) { if (hasComment(line)) { continue; } int[] numberListForLine = getNumberList(line); int expectedLargestNumber = getLargestNumber(line); int actualLargestNumber = Cmp.Largest(numberListForLine)); Assert.That(expectedLargestNumber, Is.EqualTo(actualLargestNumber)); } } Mona’s C#

  30. Test File Format # # Simple tests: # 9 7 8 9 9 9 8 7 9 9 8 9 # # Negative number tests: # -7 -7 -8 -9 -7 -8 -7 -8 -7 -9 -7 -8 # # Mixture: # 7 -9 -7 -8 7 6 4 9 -1 0 9 -7 4 # # Boundary conditions: # 1 1 0 0 2147483647 2147483647 -2147483648 -2147483648 Mona’s C#

  31. Boundary Conditions Most Bugs happen here Max, Min values, boundary in arrays, lists • Totally bogus or inconsistent input values, such as a file name of "!*W:X\&Gi/w>g/h#WQ@". • Badly formatted data that is missing delimeters or terminators, such as an e-mail address without a top-level domain ("fred@foobar.").2 • Empty or missing values (such as 0, 0.0, an empty string, an empty array, or null), or missing in a sequence (such as a missing TCP packet). • Values far in excess of reasonable expectations, such as a person’s age of 10,000 years or a password string with 10,000 characters in it. • Duplicates in lists that shouldn’t have duplicates. • Ordered lists that aren’t, and vice-versa. Try handing a pre-sorted list to a sort algorithm, for instance—or even a reverse-sorted list. • Things that arrive out of order, or happen out of expected order, such as trying to print a document before logging in, or getting fragmented IP packets out of order, for instance. Mona’s C#

  32. CORRECT in Boundary Conditions Conformance — Does the value conform to an expected format? • Ordering — Is the set of values ordered or unordered as appropriate? • Range — Is the value within reasonable minimum and maximum values? • Reference — Does the code reference anything external that isn’t under direct control of the code itself? • Existence — Does the value exist (e.g., is non-null, nonzero, present in a set, etc.)? • Cardinality — Are there exactly enough values? • Time (absolute and relative) — Is everything happening in order? At the right time? In time? Mona’s C#

  33. Conformance • Format을 따르나? • Email 주소:myid@ring.net • • What if there’s no header, just data and a trailer? • • What if there’s no data, just a header and trailer? • • What if there’s no trailer, just a header and data? • • What if there’s just a trailer? • • What if there’s just a header? • • What if there’s just data? Mona’s C#

  34. Ordering 순서가 있는 데이터 집합 Mona’s C#

  35. Range • 데이터 종류에 따른 범위 • 나이, 각도(angle) • 데이터 타입에 따른 범위 • Int, long형 Mona’s C#

  36. Range -2 public const int MAX_DIST = 100; static public void AssertPairInRange(Point one, Point two, String message) { Assert.That( Math.Abs(one.X - two.X), Is.AtMost(MAX_DIST), message ); Assert.That( Math.Abs(one.Y - two.Y), Is.AtMost(MAX_DIST), message ); } Mona’s C#

  37. public class MyStack { public MyStack() { elements = new string[100]; nextIndex = 0; } public String Pop() { return elements[--nextIndex]; } // Delete n items from the elements en-masse public void Delete(int n) { nextIndex -= n; } public void Push(string element) { elements[nextIndex++] = element; } public String Top() { return elements[nextIndex-1]; } private int nextIndex; private string[] elements; } Mona’s C#

  38. public void CheckInvariant() { if (!(nextIndex >= 0 && nextIndex < elements.Length)) { throw new InvariantException( "nextIndex out of range: " + nextIndex + " for elements length " + elements.Length); } } MyStack.cs Mona’s C#

  39. using NUnit.Framework; [TestFixture] public class MyStackTest { [Test] public void Empty() { MyStack stack = new MyStack(); stack.CheckInvariant(); stack.Push("sample" ); stack.CheckInvariant(); // Popping last element ok Assert.That( stack.Pop(), Is.EqualTo("sample" ) ); stack.CheckInvariant(); // Delete from empty stack stack.Delete(1); stack.CheckInvariant(); } } Mona’s C#

  40. • Start and End index have the same value • First is greater than Last • Index is negative • Index is greater than allowed • Count doesn’t match actual number of items Mona’s C#

  41. Inverse Relationships [Test] public void SquareRootUsingInverse() { double x = MyMath.SquareRoot(4.0); Assert.That(4.0, Is.EqualTo(x*x).Within(0.0001)); } 역관계가 성립하는지 확인 역으로 계산하는 것도 맞는지 확인 반대 관계 반대 순서로 했을 때 원 순서가 유지되는지 테스트 Mona’s C#

  42. Inverse Relationships Examples 계산을 반대로 해보기 DB에서 삽입 <-> 삭제 부드러운 이미지 <-> 선명한 이미지 Mona’s C#

  43. Force Error Conditions • Running out of memory • Running out of disk space • Issues with wall-clock time • Network availability and errors • Insufficient File or Path permissions • System load • Limited color palette • Very high or very low video resolution Mona’s C#

  44. Performance Characteristics • 데이터 크기에 따른 성능 특성 테스트 • 작은 데이터 집단 • 큰 데이터 집단 Mona’s C#

  45. Mona’s C#

  46. 일반원칙 망가질 가능성이 있는 모든 것을 테스트한다. 망가지는 모든 것을 테스트한다. 새 코드는 무죄가 증명되기 전까지는 유죄. 적어도 제품 코드만큼 테스트 코드를 작성한다. 컴파일을 할 때마다 지역 테스트를 실행한다. 저장소에 체크인하기 전에 모든 테스트를 실행해본다. 무엇을 테스트해야 하는가 RIGHT-BICEP Right : 결과가 옳은가? Boundary : 모든 경계 조건이 CORRECT(아래 참조)한가? Inverse : 역관계를 확인할 수 있는가? Cross-check : 다른 수단을 사용해서 결과를 교차 확인 할 수 있는가? Error condition : 에러조건을 강제로 만들어 낼 수 있는가? Perfomance : 성능 특성이 한도내에 있는가? CORRECT 경계 조건 Conformance : 예상한 형식과 일치하는가? Ordering : 적절한 순서대로 되어있는가? Range : 최소값과 최대값사이에 있는가? Reference : 외부코드를 참조 하는가? Existence : 값이 존재하는가? Cardinality : 확실히 충분한 값이 존재하는가? Time : 제시간에 때맞추어 일어나는가? 좋은 테스트는 A-TRIP해야 한다. Automatic : 자동적이어야 한다. Through : 철저해야 한다. Repeatable : 반복가능해야 한다. Independent : 독립적이어야 한다. Professional : 전문적이어야 한다. Mona’s C#

More Related