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Fluent Assertions Documentation
FluentAssertions.Execution Namespace / FailReason Class
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    FailReason Class
    In This Topic
    Represents the assertion fail reason. Contains the message and arguments for message's numbered placeholders.
    Syntax
    public class FailReason
    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 AssertionChain.BecauseOf.

    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}.

    Inheritance Hierarchy

    System.Object
       FluentAssertions.Execution.FailReason

    Public Constructors
     NameDescription
    Public ConstructorFailReason ConstructorRepresents the assertion fail reason. Contains the message and arguments for message's numbered placeholders. Initializes a new instance of the FailReason class.  
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    Public Properties
     NameDescription
    Public PropertyArgsArguments for the numbered System.String.Format(System.String,System.Object[])-style placeholders of Message.  
    Public PropertyMessageMessage to be displayed in case of failed assertion. May contain numbered System.String.Format(System.String,System.Object[])-style placeholders as well as specialized placeholders.  
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    Extension Methods
     NameDescription
    Public Extension MethodAs<TTo>Safely casts the specified object to the type specified through TTo.
    Public Extension MethodAwaitingOverloaded. Invokes the specified action on a subject so that you can chain it with any of the assertions from FluentAssertions.Specialized.NonGenericAsyncFunctionAssertions
    Public Extension MethodEnumeratingOverloaded. Forces enumerating a collection. Should be used to assert that a method that uses the yield keyword throws a particular exception.
    Public Extension MethodExecutionTimeOf<T> Provides methods for asserting the execution time of a method or property.
    Public Extension MethodInvokingOverloaded. Invokes the specified action on a subject so that you can chain it with any of the assertions from FluentAssertions.Specialized.ActionAssertions
    Public Extension MethodMonitorOverloaded. Starts monitoring eventSource for its events.
    Public Extension MethodShouldOverloaded. Returns an FluentAssertions.Specialized.ExecutionTimeAssertions object that can be used to assert the current FluentAssertions.Specialized.ExecutionTime.
    Public Extension MethodShouldOverloaded. Returns an FluentAssertions.Primitives.EnumAssertions<TEnum,TAssertions> object that can be used to assert the current TEnum.
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    Requirements

    Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also

    Reference

    FailReason Members
    FluentAssertions.Execution Namespace

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