Avoid dictionary resizes when the size is approximately known (#4313)

microsoft · Dec 11, 2024 · 19b63cd · 19b63cd
1 parent 6aa7715
commit 19b63cd
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/Adapter/MSTest.TestAdapter/Execution/TestExecutionManager.cs b/src/Adapter/MSTest.TestAdapter/Execution/TestExecutionManager.cs
@@ -486,7 +486,9 @@ private void ExecuteTestsWithTestRunner(
         IDictionary<TestProperty, object?> tcmProperties,
         IDictionary<string, object> sourceLevelParameters)
     {
-        var testContextProperties = new Dictionary<string, object?>();
+        // This dictionary will have *at least* 8 entries. Those are the sourceLevelParameters
+        // which were originally calculated from TestDeployment.GetDeploymentInformation.
+        var testContextProperties = new Dictionary<string, object?>(capacity: 8);
 
         // Add tcm properties.
         foreach (KeyValuePair<TestProperty, object?> propertyPair in tcmProperties)