Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

external/aspnetwebstack/test/System.Web.Razor.Test/RazorCodeLanguageTest.cs

@@ -0,0 +1,49 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+using Xunit;
+
+namespace System.Web.Razor.Test
+{
+    public class RazorCodeLanguageTest
+    {
+        [Fact]
+        public void ServicesPropertyContainsEntriesForCSharpCodeLanguageService()
+        {
+            // Assert
+            Assert.Equal(2, RazorCodeLanguage.Languages.Count);
+            Assert.IsType<CSharpRazorCodeLanguage>(RazorCodeLanguage.Languages["cshtml"]);
+            Assert.IsType<VBRazorCodeLanguage>(RazorCodeLanguage.Languages["vbhtml"]);
+        }
+
+        [Fact]
+        public void GetServiceByExtensionReturnsEntryMatchingExtensionWithoutPreceedingDot()
+        {
+            Assert.IsType<CSharpRazorCodeLanguage>(RazorCodeLanguage.GetLanguageByExtension("cshtml"));
+        }
+
+        [Fact]
+        public void GetServiceByExtensionReturnsEntryMatchingExtensionWithPreceedingDot()
+        {
+            Assert.IsType<CSharpRazorCodeLanguage>(RazorCodeLanguage.GetLanguageByExtension(".cshtml"));
+        }
+
+        [Fact]
+        public void GetServiceByExtensionReturnsNullIfNoServiceForSpecifiedExtension()
+        {
+            Assert.Null(RazorCodeLanguage.GetLanguageByExtension("foobar"));
+        }
+
+        [Fact]
+        public void MultipleCallsToGetServiceWithSameExtensionReturnSameObject()
+        {
+            // Arrange
+            RazorCodeLanguage expected = RazorCodeLanguage.GetLanguageByExtension("cshtml");
+
+            // Act
+            RazorCodeLanguage actual = RazorCodeLanguage.GetLanguageByExtension("cshtml");
+
+            // Assert
+            Assert.Same(expected, actual);
+        }
+    }
+}