Simplifies ReadOnlySpan ArgumentNullException test (#25486)

marek-safar · stephentoub · commit fb94fc7e1dc7 · 2017-11-24T15:50:19.000-05:00
diff --git a/src/System.Memory/tests/ReadOnlySpan/AsReadOnlySpan.cs b/src/System.Memory/tests/ReadOnlySpan/AsReadOnlySpan.cs
@@ -38,8 +38,7 @@ public static void ObjectArrayAsReadOnlySpan()
         public static void NullArrayAsReadOnlySpan()
         {
             int[] a = null;
-            ReadOnlySpan<int> span;
-            TestHelpers.AssertThrows<ArgumentNullException, int>(span, _span => _span = a.AsReadOnlySpan());
+            Assert.Throws<ArgumentNullException>(() => a.AsReadOnlySpan().DontBox());
         }
 
         [Fact]

Original file line number	Diff line number	Diff line change
`@@ -38,8 +38,7 @@ public static void ObjectArrayAsReadOnlySpan()`
`38`	`38`	`public static void NullArrayAsReadOnlySpan()`
`39`	`39`	`{`
`40`	`40`	`int[] a = null;`
`41`		`- ReadOnlySpan<int> span;`
`42`		`- TestHelpers.AssertThrows<ArgumentNullException, int>(span, _span => _span = a.AsReadOnlySpan());`
	`41`	`+ Assert.Throws<ArgumentNullException>(() => a.AsReadOnlySpan().DontBox());`
`43`	`42`	`}`
`44`	`43`
`45`	`44`	`[Fact]`