1 // *********************************************************************** 2 // Copyright (c) 2008 Charlie Poole 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining 5 // a copy of this software and associated documentation files (the 6 // "Software"), to deal in the Software without restriction, including 7 // without limitation the rights to use, copy, modify, merge, publish, 8 // distribute, sublicense, and/or sell copies of the Software, and to 9 // permit persons to whom the Software is furnished to do so, subject to 10 // the following conditions: 11 // 12 // The above copyright notice and this permission notice shall be 13 // included in all copies or substantial portions of the Software. 14 // 15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 // *********************************************************************** 23 24 using System; 25 using System.Collections; 26 #if CLR_2_0 || CLR_4_0 27 using System.Collections.Generic; 28 #endif 29 using System.Reflection; 30 using NUnit.Framework.Api; 31 using NUnit.Framework.Extensibility; 32 using NUnit.Framework.Internal; 33 34 namespace NUnit.Framework.Builders 35 { 36 /// <summary> 37 /// CombinatorialStrategy creates test cases by using all possible 38 /// combinations of the parameter data. 39 /// </summary> 40 public class CombinatorialStrategy : CombiningStrategy 41 { 42 /// <summary> 43 /// Initializes a new instance of the <see cref="CombinatorialStrategy"/> class. 44 /// </summary> 45 /// <param name="sources">The sources.</param> CombinatorialStrategy(IEnumerable[] sources)46 public CombinatorialStrategy(IEnumerable[] sources) : base(sources) { } 47 48 /// <summary> 49 /// Gets the test cases generated by the CombiningStrategy. 50 /// </summary> 51 /// <returns>The test cases.</returns> 52 #if CLR_2_0 || CLR_4_0 GetTestCases()53 public override IEnumerable<ITestCaseData> GetTestCases() 54 { 55 List<ITestCaseData> testCases = new List<ITestCaseData>(); 56 #else 57 public override IEnumerable GetTestCases() 58 { 59 ArrayList testCases = new ArrayList(); 60 #endif 61 IEnumerator[] enumerators = new IEnumerator[Sources.Length]; 62 int index = -1; 63 64 for (; ; ) 65 { 66 while (++index < Sources.Length) 67 { 68 enumerators[index] = Sources[index].GetEnumerator(); 69 if (!enumerators[index].MoveNext()) 70 return testCases; 71 } 72 73 object[] testdata = new object[Sources.Length]; 74 75 for (int i = 0; i < Sources.Length; i++) 76 testdata[i] = enumerators[i].Current; 77 78 ParameterSet parms = new ParameterSet(); 79 parms.Arguments = testdata; 80 testCases.Add(parms); 81 82 index = Sources.Length; 83 84 while (--index >= 0 && !enumerators[index].MoveNext()) ; 85 86 if (index < 0) break; 87 } 88 89 return testCases; 90 } 91 } 92 } 93