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Fluent Assertions Documentation
[Root] / FluentAssertions Assembly / FluentAssertions.Execution Namespace / FailReason Class / FailReason Constructor
In This Topic
    FailReason Constructor
    In This Topic
    Represents the assertion fail reason. Contains the message and arguments for message's numbered placeholders. Initializes a new instance of the FailReason class.
    Syntax
    public FailReason( 
   string message,
   params object[] args
)

    Parameters

    message
    args
    Remarks
    In addition to the numbered System.String.Format(System.String,System.Object[])-style placeholders, messages may contain a few specialized placeholders as well. For instance, {reason} will be replaced with the reason of the assertion as passed to BecauseOf(String,Object[]).

    Other named placeholders will be replaced with the AssertionScope.Current scope data passed through AssertionChain.WithReportable.

    Finally, a description of the current subject can be passed through the {context:description} placeholder. This is used in the message if no explicit context is specified through the AssertionScope constructor.

    Note that only 10 args are supported in combination with a {reason}.

    Supported Frameworks

    .NET: net5.0, net5.0-windows, net6.0, net6.0-macos, net6.0-windows, net7.0, net7.0-macos, net7.0-windows, net8.0, net8.0-browser, net8.0-macos, net8.0-windows, net9.0, net9.0-browser, net9.0-macos, net9.0-windows, net10.0, net10.0-browser, net10.0-macos, net10.0-windows.

    .NET Standard: netstandard2.0, netstandard2.1.

    .NET Framework: net40, net403, net45, net451, net452, net46, net461, net462, net463, net47, net471, net472, net48, net481.

    See Also

    Reference

    FailReason Class
    FailReason Members

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