fixed test by adding semaphores. Also reduced collections name to avoid hitting the 127 byte limit regarding index names.

CoreIntegrationTests/CRUDPartitionedCollectionNameAttributeTests.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace CoreIntegrationTests
 {
-    [CollectionName("CoreTestingCollectionNameAttributePartitionedTKey")]
+    [CollectionName("CoreTestingCNameAttrPart")]
     public class CorePartitionedCollectionNameDoc : TestDoc, IPartitionedDocument
     {
         public CorePartitionedCollectionNameDoc()

CoreIntegrationTests/CRUDTKeyPartitionedCollectionNameAttributeTests.cs

@@ -5,7 +5,7 @@ using System;
 
 namespace CoreIntegrationTests
 {
-    [CollectionName("TestingCollectionNameAttributePartitionedTKey")]
+    [CollectionName("TestingCNameAttrPartTKey")]
     public class CoreTKeyPartitionedCollectionNameDoc : TestDoc<Guid>, IPartitionedDocument
     {
         public CoreTKeyPartitionedCollectionNameDoc()

CoreIntegrationTests/Infrastructure/MongoDbDocumentTestBase.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Runtime.CompilerServices;
+using System.Threading;
 using System.Threading.Tasks;
 using Xunit;
 
@@ -946,6 +947,10 @@ namespace CoreIntegrationTests.Infrastructure
 
         #region Index Management
 
+
+        //Instantiate a Singleton of the Semaphore with a value of 1. This means that only 1 thread can be granted access at a time.
+        static SemaphoreSlim textIndexSemaphore = new SemaphoreSlim(1, 1);
+
         [Fact]
         public async Task CreateTextIndexNoOptionAsync()
         {
@@ -953,6 +958,9 @@ namespace CoreIntegrationTests.Infrastructure
             const string expectedIndexName = "SomeContent_text";
 
             // Act
+            await textIndexSemaphore.WaitAsync();
+            try
+            {
                 var result = await SUT.CreateTextIndexAsync<T>(x => x.SomeContent, null, PartitionKey);
 
                 // Assert
@@ -962,18 +970,26 @@ namespace CoreIntegrationTests.Infrastructure
                 // Cleanup 
                 await SUT.DropIndexAsync<T>(expectedIndexName, PartitionKey);
             }
+            finally
+            {
+                textIndexSemaphore.Release();
+            }
+        }
 
         [Fact]
         public async Task CreateTextIndexWithOptionAsync()
         {
             // Arrange
-            string expectedIndexName = $"SomeContent_text_{Guid.NewGuid()}";
+            string expectedIndexName = $"{Guid.NewGuid()}";
             var option = new IndexCreationOptions
             {
                 Name = expectedIndexName
             };
+            await textIndexSemaphore.WaitAsync();
+            try
+            {
                 // Act
-            var result = await SUT.CreateTextIndexAsync<T>(x => x.SomeContent, option, PartitionKey);
+                var result = await SUT.CreateTextIndexAsync<T>(x => x.AddedAtUtc, option, PartitionKey);
 
                 // Assert
                 var listOfIndexNames = await SUT.GetIndexesNamesAsync<T>(PartitionKey);
@@ -982,6 +998,11 @@ namespace CoreIntegrationTests.Infrastructure
                 // Cleanup
                 await SUT.DropIndexAsync<T>(expectedIndexName, PartitionKey);
             }
+            finally
+            {
+                textIndexSemaphore.Release();
+            }
+        }
 
         #endregion Index Management