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Fluent Assertions Documentation
FluentAssertions Assembly / FluentAssertions.Execution Namespace / AssertionChain Class
In This Topic
    AssertionChain Class
    In This Topic
    Provides a fluent API to build simple or composite assertions, and which can flow from one assertion to another.
    Object Model
    AssertionChain ClassAssertionChain ClassContinuation ClassAssertionChain ClassAssertionChain ClassAssertionChain ClassAssertionChain ClassAssertionChain ClassContinuation ClassAssertionChain Class
    Syntax
    public sealed class AssertionChain
    Remarks
    This is the core engine of many of the assertion APIs in this library. When combined with AssertionScope, you can run multiple assertions which failure messages will be collected until the scope is disposed.
    Inheritance Hierarchy

    System.Object
       FluentAssertions.Execution.AssertionChain

    Public Properties
     NameDescription
    Public PropertyCallerIdentifierThe effective caller identifier including any prefixes and postfixes configured through WithCallerPostfix.  
    Public PropertyHasOverriddenCallerIdentifier Indicates whether the caller identifier has been manually overridden.  
    Public PropertySucceededGets a value indicating whether all assertions in the AssertionChain have succeeded.  
    Public PropertyUsingLineBreaks  
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    Public Methods
     NameDescription
    Public MethodAddReportableOverloaded.  Adds some information to the assertion that will be included in the message that is emitted if an assertion fails.  
    Public MethodBecauseOfOverloaded.  Adds an explanation of why the assertion is supposed to succeed to the scope.  
    Public MethodFailWithOverloaded.   
    Public MethodForCondition  
    Public MethodForConstraint  
    Public Methodstatic (Shared in Visual Basic)GetOrCreateEither starts a new assertion chain, or, when ReuseOnce was called, for once, will return an existing instance.  
    Public MethodGiven<T>  
    Public MethodOverrideCallerIdentifier Allows overriding the caller identifier for the next call to one of the `FailWith` overloads instead of relying on the automatic behavior that extracts the variable names from the C# code.  
    Public MethodReuseOnceEnsures that the next call to GetOrCreate will reuse the current instance.  
    Public MethodWithDefaultIdentifier  
    Public MethodWithExpectationOverloaded.   
    Public MethodWithReportableFluent alternative for AddReportable(String,String)  
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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.
    Public Extension MethodShouldOverloaded. Returns an object that provides various assertion APIs that act on a System.Text.Json.Nodes.JsonNode.
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    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

    AssertionChain Members
    FluentAssertions.Execution Namespace
    AssertionScope Class

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