How to use ComparisonAdapter class of NUnit.Framework.Constraints package

Best Nunit code snippet using NUnit.Framework.Constraints.ComparisonAdapter

ComparisonAdapter.cs

Source:ComparisonAdapter.cs Github

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...10#endif11namespace NUnit.Framework.Constraints12{13 /// <summary>14 /// ComparisonAdapter class centralizes all comparisons of15 /// values in NUnit, adapting to the use of any provided16 /// IComparer, IComparer&lt;T&gt; or Comparison&lt;T&gt;17 /// </summary>18 public abstract class ComparisonAdapter19 {20 /// <summary>21 /// Gets the default ComparisonAdapter, which wraps an22 /// NUnitComparer object.23 /// </summary>24 public static ComparisonAdapter Default25 {26 get { return new DefaultComparisonAdapter(); }27 }28 /// <summary>29 /// Returns a ComparisonAdapter that wraps an IComparer30 /// </summary>31 public static ComparisonAdapter For(IComparer comparer)32 {33 return new ComparerAdapter(comparer);34 }35#if CLR_2_0 || CLR_4_036 /// <summary>37 /// Returns a ComparisonAdapter that wraps an IComparer&lt;T&gt;38 /// </summary>39 public static ComparisonAdapter For<T>(IComparer<T> comparer)40 {41 return new ComparerAdapter<T>(comparer);42 }43 /// <summary>44 /// Returns a ComparisonAdapter that wraps a Comparison&lt;T&gt;45 /// </summary>46 public static ComparisonAdapter For<T>(Comparison<T> comparer)47 {48 return new ComparisonAdapterForComparison<T>(comparer);49 }50#endif51 /// <summary>52 /// Compares two objects53 /// </summary>54 public abstract int Compare(object expected, object actual);55 class DefaultComparisonAdapter : ComparerAdapter56 {57 /// <summary>58 /// Construct a default ComparisonAdapter59 /// </summary>60 public DefaultComparisonAdapter() : base( NUnitComparer.Default ) { }61 }62 class ComparerAdapter : ComparisonAdapter63 {64 private readonly IComparer comparer;65 /// <summary>66 /// Construct a ComparisonAdapter for an IComparer67 /// </summary>68 public ComparerAdapter(IComparer comparer)69 {70 this.comparer = comparer;71 }72 /// <summary>73 /// Compares two objects74 /// </summary>75 /// <param name="expected"></param>76 /// <param name="actual"></param>77 /// <returns></returns>78 public override int Compare(object expected, object actual)79 {80 return comparer.Compare(expected, actual);81 }82 }83#if CLR_2_0 || CLR_4_084 /// <summary>85 /// ComparisonAdapter&lt;T&gt; extends ComparisonAdapter and86 /// allows use of an IComparer&lt;T&gt; or Comparison&lt;T&gt;87 /// to actually perform the comparison.88 /// </summary>89 class ComparerAdapter<T> : ComparisonAdapter90 {91 private readonly IComparer<T> comparer;92 /// <summary>93 /// Construct a ComparisonAdapter for an IComparer&lt;T&gt;94 /// </summary>95 public ComparerAdapter(IComparer<T> comparer)96 {97 this.comparer = comparer;98 }99 /// <summary>100 /// Compare a Type T to an object101 /// </summary>102 public override int Compare(object expected, object actual)103 {104 if (!typeof(T).IsAssignableFrom(expected.GetType()))105 throw new ArgumentException("Cannot compare " + expected.ToString());106 if (!typeof(T).IsAssignableFrom(actual.GetType()))107 throw new ArgumentException("Cannot compare to " + actual.ToString());108 return comparer.Compare((T)expected, (T)actual);109 }110 }111 class ComparisonAdapterForComparison<T> : ComparisonAdapter112 {113 private readonly Comparison<T> comparison;114 /// <summary>115 /// Construct a ComparisonAdapter for a Comparison&lt;T&gt;116 /// </summary>117 public ComparisonAdapterForComparison(Comparison<T> comparer)118 {119 this.comparison = comparer;120 }121 /// <summary>122 /// Compare a Type T to an object123 /// </summary>124 public override int Compare(object expected, object actual)125 {126 if (!typeof(T).IsAssignableFrom(expected.GetType()))127 throw new ArgumentException("Cannot compare " + expected.ToString());128 if (!typeof(T).IsAssignableFrom(actual.GetType()))129 throw new ArgumentException("Cannot compare to " + actual.ToString());130 return comparison.Invoke((T)expected, (T)actual);131 }...

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ComparisonConstraint.cs

Source:ComparisonConstraint.cs Github

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...17 /// </summary>18 public abstract class ComparisonConstraint : Constraint19 {20 /// <summary>21 /// ComparisonAdapter to be used in making the comparison22 /// </summary>23 protected ComparisonAdapter comparer = ComparisonAdapter.Default;24 /// <summary>25 /// Initializes a new instance of the <see cref="T:ComparisonConstraint"/> class.26 /// </summary>27 public ComparisonConstraint(object arg) : base(arg) { }28 /// <summary>29 /// Initializes a new instance of the <see cref="T:ComparisonConstraint"/> class.30 /// </summary>31 public ComparisonConstraint(object arg1, object arg2) : base(arg1, arg2) { }32 /// <summary>33 /// Modifies the constraint to use an IComparer and returns self34 /// </summary>35 public ComparisonConstraint Using(IComparer comparer)36 {37 this.comparer = ComparisonAdapter.For(comparer);38 return this;39 }40#if CLR_2_0 || CLR_4_041 /// <summary>42 /// Modifies the constraint to use an IComparer&lt;T&gt; and returns self43 /// </summary>44 public ComparisonConstraint Using<T>(IComparer<T> comparer)45 {46 this.comparer = ComparisonAdapter.For(comparer);47 return this;48 }49 /// <summary>50 /// Modifies the constraint to use a Comparison&lt;T&gt; and returns self51 /// </summary>52 public ComparisonConstraint Using<T>(Comparison<T> comparer)53 {54 this.comparer = ComparisonAdapter.For(comparer);55 return this;56 }57#endif58 }59}...

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ComparisonConstraints.cs

Source:ComparisonConstraints.cs Github

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...17 /// </summary>18 public abstract class ComparisonConstraint : Constraint19 {20 /// <summary>21 /// ComparisonAdapter to be used in making the comparison22 /// </summary>23 protected ComparisonAdapter comparer = ComparisonAdapter.Default;24 /// <summary>25 /// Initializes a new instance of the <see cref="T:ComparisonConstraint"/> class.26 /// </summary>27 public ComparisonConstraint(object arg) : base(arg) { }28 /// <summary>29 /// Initializes a new instance of the <see cref="T:ComparisonConstraint"/> class.30 /// </summary>31 public ComparisonConstraint(object arg1, object arg2) : base(arg1, arg2) { }32 /// <summary>33 /// Modifies the constraint to use an IComparer and returns self34 /// </summary>35 public ComparisonConstraint Using(IComparer comparer)36 {37 this.comparer = ComparisonAdapter.For(comparer);38 return this;39 }40#if CLR_2_0 || CLR_4_041 /// <summary>42 /// Modifies the constraint to use an IComparer&lt;T&gt; and returns self43 /// </summary>44 public ComparisonConstraint Using<T>(IComparer<T> comparer)45 {46 this.comparer = ComparisonAdapter.For(comparer);47 return this;48 }49 /// <summary>50 /// Modifies the constraint to use a Comparison&lt;T&gt; and returns self51 /// </summary>52 public ComparisonConstraint Using<T>(Comparison<T> comparer)53 {54 this.comparer = ComparisonAdapter.For(comparer);55 return this;56 }57#endif58 }59}...

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ComparisonAdapter

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1using NUnit.Framework;2using NUnit.Framework.Constraints;3{4 {5 public void TestMethod1()6 {7 ComparisonAdapter comparisonAdapter = new ComparisonAdapter(new Comparison<int>(Compare));8 Assert.That(1, comparisonAdapter);9 }10 public int Compare(int x, int y)11 {12 return 0;13 }14 }15}16using NUnit.Framework;17using NUnit.Framework.Constraints;18{19 {20 public void TestMethod1()21 {22 ComparisonAdapter comparisonAdapter = new ComparisonAdapter<int>(Compare);23 Assert.That(1, comparisonAdapter);24 }25 public int Compare(int x, int y)26 {27 return 0;28 }29 }30}31using NUnit.Framework;32using NUnit.Framework.Constraints;33{34 {35 public void TestMethod1()36 {37 ComparisonAdapter comparisonAdapter = new ComparisonAdapter<int>(Compare);38 Assert.That(1, comparisonAdapter);39 }40 public int Compare(int x, int y)41 {42 return 0;43 }44 }45}46using NUnit.Framework;47using NUnit.Framework.Constraints;48{49 {50 public void TestMethod1()51 {52 ComparisonAdapter comparisonAdapter = new ComparisonAdapter<int>(Compare);53 Assert.That(1, comparisonAdapter);54 }55 public int Compare(int x, int y)56 {57 return 0;58 }59 }60}61using NUnit.Framework;62using NUnit.Framework.Constraints;63{64 {65 public void TestMethod1()66 {67 ComparisonAdapter comparisonAdapter = new ComparisonAdapter<int>(Compare);68 Assert.That(1

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ComparisonAdapter

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1using NUnit.Framework.Constraints;2{3 {4 public static ComparisonAdapter<T> Create<T>(Comparison<T> comparison)5 {6 return new ComparisonAdapter<T>(comparison);7 }8 }9 {10 private readonly Comparison<T> comparison;11 public ComparisonAdapter(Comparison<T> comparison)12 {13 this.comparison = comparison;14 }15 public int Compare(T x, T y)16 {17 return comparison(x, y);18 }19 }20}21using NUnit.Framework;22using NUnit.Framework.Constraints;23using System;24using System.Collections.Generic;25using System.Linq;26{27 {28 public void Test1()29 {30 var list = new List<int> { 1, 2, 3, 4, 5 };31 var expectedList = new List<int> { 1, 2, 3, 4, 5 };32 var actualList = list.OrderBy(x => x, ComparisonAdapter.Create((x, y) => y.CompareTo(x))).ToList();33 Assert.That(actualList, Is.EqualTo(expectedList));34 }35 }36}

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ComparisonAdapter

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1using System;2using NUnit.Framework.Constraints;3using NUnit.Framework;4{5 {6 static void Main(string[] args)7 {8 Console.WriteLine("Hello World!");9 int[] a = new int[] { 1, 2, 3 };10 int[] b = new int[] { 1, 2, 3 };11 int[] c = new int[] { 1, 3, 2 };12 ComparisonAdapter<int> ca = new ComparisonAdapter<int>(a, b);13 ComparisonAdapter<int> ca2 = new ComparisonAdapter<int>(a, c);14 Assert.AreEqual(ca, ca2);15 }16 }17}18 Program.Main(String[] args) line 16

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ComparisonAdapter

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1using NUnit.Framework;2using NUnit.Framework.Constraints;3using System;4using System.Collections.Generic;5using System.Linq;6using System.Text;7using System.Threading.Tasks;8{9 {10 static void Main(string[] args)11 {12 object obj1 = new object();13 object obj2 = new object();14 ComparisonAdapter adapter = new ComparisonAdapter();15 adapter.Compare(obj1, obj2);16 }17 }18}19using NUnit.Framework;20using NUnit.Framework.Constraints;21using System;22using System.Collections.Generic;23using System.Linq;24using System.Text;25using System.Threading.Tasks;26{27 {28 static void Main(string[] args)29 {30 object obj1 = new object();31 object obj2 = new object();32 ComparisonAdapter adapter = new ComparisonAdapter();33 adapter.Compare(obj1, obj1);34 }35 }36}37using NUnit.Framework;38using NUnit.Framework.Constraints;39using System;40using System.Collections.Generic;41using System.Linq;42using System.Text;43using System.Threading.Tasks;44{45 {46 static void Main(string[] args)47 {48 object obj1 = new object();49 object obj2 = new object();50 ComparisonAdapter adapter = new ComparisonAdapter();51 adapter.Compare(obj1, obj2);52 }53 }54}55using NUnit.Framework;56using NUnit.Framework.Constraints;57using System;58using System.Collections.Generic;59using System.Linq;60using System.Text;61using System.Threading.Tasks;62{63 {64 static void Main(string[] args)65 {66 object obj1 = new object();67 object obj2 = new object();68 ComparisonAdapter adapter = new ComparisonAdapter();69 {70 adapter.Compare(obj1, obj2);71 }72 catch (Exception ex)73 {

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ComparisonAdapter

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1using System;2using System.Collections.Generic;3using NUnit.Framework.Constraints;4using NUnit.Framework;5{6 {7 static void Main(string[] args)8 {9 List<int> list1 = new List<int> { 1, 2, 3, 4, 5 };10 List<int> list2 = new List<int> { 1, 2, 3, 4, 5 };11 var adapter = new ComparisonAdapter<int>(list1, list2);12 Assert.That(adapter, Is.EquivalentTo(list1));13 Console.ReadKey();14 }15 }16}

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ComparisonAdapter

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1using NUnit.Framework.Constraints;2using System.Collections;3using System.Collections.Generic;4{5 {6 private IEnumerable expected;7 private IEnumerable actual;8 public ComparisonAdapter(IEnumerable expected, IEnumerable actual)9 {10 this.expected = expected;11 this.actual = actual;12 }13 public bool AreEqual()14 {15 IEnumerator expectedEnumerator = expected.GetEnumerator();16 IEnumerator actualEnumerator = actual.GetEnumerator();17 while (expectedEnumerator.MoveNext())18 {19 if (!actualEnumerator.MoveNext())20 return false;21 if (!expectedEnumerator.Current.Equals(actualEnumerator.Current))22 return false;23 }24 return !actualEnumerator.MoveNext();25 }26 }27 {28 public void TestMethod()29 {30 List<int> expected = new List<int> { 1, 2, 3 };31 List<int> actual = new List<int> { 1, 2, 3 };32 Assert.IsTrue(new ComparisonAdapter(expected, actual).AreEqual());33 }34 }35}36using NUnit.Framework.Constraints;37using System.Collections;38using System.Collections.Generic;39{40 {41 public void TestMethod()42 {43 List<int> expected = new List<int> { 1, 2, 3 };44 List<int> actual = new List<int> { 1, 2, 3 };45 Assert.That(actual, Is.EqualTo(expected).Using(new CollectionEquivalentConstraint()));46 }47 }48}49using NUnit.Framework.Constraints;50using System.Collections;51using System.Collections.Generic;52{53 {54 public void TestMethod()55 {56 List<int> expected = new List<int> { 1, 2, 3 };57 List<int> actual = new List<int> { 1, 2, 3 };58 Assert.That(actual, Is.EquivalentTo(expected));59 }60 }61}62using NUnit.Framework.Constraints;63using System.Collections;64using System.Collections.Generic;

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