Facts in C#

A test is a method with an attribute; xunit finds the rest.

using Xunit;

public class TokenizerTests
{
    [Fact]
    public void Splits_on_spaces()
    {
        var tokens = "var x = 5".Split(' ');
        Assert.Equal(4, tokens.Length);
        Assert.Equal("var", tokens[0]);
    }

    [Fact]
    public void Empty_input_yields_one_empty_token()
    {
        Assert.Single("".Split(' '));
    }
}

How it works

1. [Fact] marks a test that takes no arguments.
2. Assert.Equal and Assert.Single state the expectations.
3. Test names in words double as documentation.

Keywords and builtins used here

• Empty_input_yields_one_empty_token
• Splits_on_spaces
• TokenizerTests
• class
• public
• using
• var
• void

The run, in numbers

Lines

18

Characters to type

279

Tokens

69

Three-star pace

90 tpm

At the three-star pace of 90 tokens a minute, this run takes about 46 seconds.

Type this snippet

Step 1 of 3 in Testing, step 10 of 16 in The open ecosystem.

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