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1 files changed, 16 insertions, 0 deletions

diff --git a/Timeline.Tests/Helpers/AsyncFunctionAssertionsExtensions.cs b/Timeline.Tests/Helpers/AsyncFunctionAssertionsExtensions.cs
new file mode 100644
index 00000000..b78309c0
--- /dev/null
+++ b/Timeline.Tests/Helpers/AsyncFunctionAssertionsExtensions.cs
@@ -0,0 +1,16 @@
+using FluentAssertions;

+using FluentAssertions.Primitives;

+using FluentAssertions.Specialized;

+using System;

+using System.Threading.Tasks;

+

+namespace Timeline.Tests.Helpers

+{

+    public static class AsyncFunctionAssertionsExtensions

+    {

+        public static async Task<AndConstraint<ObjectAssertions>> ThrowAsync(this AsyncFunctionAssertions assertions, Type exceptionType, string because = "", params object[] becauseArgs)

+        {

+            return (await assertions.ThrowAsync<Exception>(because, becauseArgs)).Which.Should().BeAssignableTo(exceptionType);

+        }

+    }

+}