From 280faac75b113d9a4bbecd7e4ea3499f1691ce61 Mon Sep 17 00:00:00 2001
From: 杨宇千 <crupest@outlook.com>
Date: Thu, 24 Oct 2019 19:57:59 +0800
Subject: ...

---
 .../Helpers/AsyncFunctionAssertionsExtensions.cs         | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Timeline.Tests/Helpers/AsyncFunctionAssertionsExtensions.cs

(limited to 'Timeline.Tests/Helpers/AsyncFunctionAssertionsExtensions.cs')

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);
+        }
+    }
+}
-- 
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