Visual Studio C# snippet for xUnit test methods (Facts) using the naming convention proposed by http://osherove.com/blog/2005/4/3/naming-standards-for-unit-tests.html. Import the snippet using the SnippetManager in VS and type `fact[tab][tab]` inside a class to insert the snippet.

xunit_fact.snippet

<?xml version="1.0" encoding="utf-8"?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
  <CodeSnippet Format="1.0.0">
    <Header>
      <SnippetTypes>
        <SnippetType>Expansion</SnippetType>
      </SnippetTypes>
      <Title>xUnit Fact</Title>
      <Shortcut>fact</Shortcut>
      <Description>Code snippet for an xUnit test method (Fact) following the naming convention UnitOfWork_StateUnderTest_ExpectedBehaviour.</Description>
      <Author>Marc Duiker</Author>
    </Header>
    <Snippet>
      <Imports>
        <Import>
          <Namespace>Xunit</Namespace>
        </Import>
      </Imports>
      <Declarations>
        <Literal>
          <ID>UnitOfWork</ID>
          <ToolTip>Describe the unit that will be tested.</ToolTip>
          <Default>UnitOfWork</Default>
        </Literal>
        <Literal>
          <ID>StateUnderTest</ID>
          <ToolTip>Describe the initial state or preconditions.</ToolTip>
          <Default>StateUnderTest</Default>
        </Literal>
        <Literal>
          <ID>ExpectedBehaviour</ID>
          <ToolTip>Describe the expected behaviour or outcome.</ToolTip>
          <Default>ExpectedBehaviour</Default>
        </Literal>
          <Literal Editable="false">
            <ID>Fact</ID>
            <Function>SimpleTypeName(Fact)</Function>
          </Literal>
      </Declarations>
      <Code Language="csharp"><![CDATA[[$Fact$]
      public void $UnitOfWork$_$StateUnderTest$_$ExpectedBehaviour$()
      {
          // Arrange
          $end$
          // Act

          // Assert
          
      }]]></Code>
    </Snippet>
  </CodeSnippet>
</CodeSnippets>