Update TestFixtureAttributeExamples.cs To give an example of using pa…

…rams in a constructor (#807) * Update TestFixtureAttributeExamples.cs To give an example of using params in a constructor * Update TestFixtureAttributeExamples.cs Fix issues with example code * Update testfixture.md * Fix: trailing markdown space * Fix code snippet * use nullable string for nullable field --------- Co-authored-by: Sean Killeen <[email protected]>
nunit · Dec 4, 2023 · b010bb3 · b010bb3
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diff --git a/docs/articles/nunit/writing-tests/attributes/testfixture.md b/docs/articles/nunit/writing-tests/attributes/testfixture.md
@@ -85,9 +85,11 @@ the name of the category or to a comma-separated list of categories.
 
 ### Example
 
-The following test fixture would be instantiated by NUnit three times, passing in each set of arguments to the
-appropriate constructor. Note that there are three different constructors, matching the data types provided as
-arguments.
+The following test fixture would be instantiated by NUnit five times,
+passing in each set of arguments to the appropriate constructor. Note
+that there are four different constructors, matching the data types
+provided as arguments, and the params keyword can be used to allow
+passing different numbers of arguments.
 
 [!code-csharp[MultipleParameterizedTestFixtures](~/snippets/Snippets.NUnit/Attributes/TestFixtureAttributeExamples.cs#MultipleParameterizedTestFixtures)]
 

diff --git a/docs/snippets/Snippets.NUnit/Attributes/TestFixtureAttributeExamples.cs b/docs/snippets/Snippets.NUnit/Attributes/TestFixtureAttributeExamples.cs
@@ -1,4 +1,4 @@
-using System.Collections;
+using System.Collections;
 using NUnit.Framework;
 // ReSharper disable ConditionIsAlwaysTrueOrFalseAccordingToNullableAPIContract
 #pragma warning disable NUnit2045
@@ -14,11 +14,13 @@ public class TestFixtureAttributeExamples
     [TestFixture("hello", "hello", "goodbye")]
     [TestFixture("zip", "zip")]
     [TestFixture(42, 42, 99)]
+    [TestFixture('a', 'a', 'b')]
+    [TestFixture('A', 'A')]
     public class ParameterizedTestFixture
     {
         private readonly string _eq1;
         private readonly string _eq2;
-        private readonly string _neq;
+        private readonly string? _neq;
 
         public ParameterizedTestFixture(string eq1, string eq2, string neq)
         {
@@ -37,6 +39,17 @@ public ParameterizedTestFixture(int eq1, int eq2, int neq)
             _neq = neq.ToString();
         }
 
+        // Can use params arguments (but not yet optional arguments)
+        public ParameterizedTestFixture(params char[] eqArguments)
+        {
+            _eq1 = eqArguments[0].ToString();
+            _eq2 = eqArguments[1].ToString();
+            if (eqArguments.Length > 2)
+                _neq = eqArguments[2].ToString();
+            else 
+                _neq = null;
+        }
+
         [Test]
         public void TestEquality()
         {
@@ -162,4 +175,4 @@ public void TestMyArgTypes(T1 t1, T2 t2)
         }
     }
     #endregion
-}
+}