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using FluentAssertions;
using FluentAssertions.Execution;
using FluentAssertions.Formatting;
using FluentAssertions.Primitives;
using System;
using System.Reflection;
namespace Timeline.Tests.Helpers
{
public class ParameterInfoValueFormatter : IValueFormatter
{
public bool CanHandle(object value)
{
return value is ParameterInfo;
}
public string Format(object value, FormattingContext context, FormatChild formatChild)
{
var param = (ParameterInfo)value;
return $"{param.Member.DeclaringType.FullName}.{param.Member.Name}#{param.Name}";
}
}
public class ParameterInfoAssertions : ReferenceTypeAssertions<ParameterInfo, ParameterInfoAssertions>
{
static ParameterInfoAssertions()
{
Formatter.AddFormatter(new ParameterInfoValueFormatter());
}
public ParameterInfoAssertions(ParameterInfo parameterInfo)
{
Subject = parameterInfo;
}
protected override string Identifier => "parameter";
public AndWhichConstraint<ParameterInfoAssertions, TAttribute> BeDecoratedWith<TAttribute>(string because = "", params object[] becauseArgs)
where TAttribute : Attribute
{
var attribute = Subject.GetCustomAttribute<TAttribute>(false);
Execute.Assertion
.BecauseOf(because, becauseArgs)
.ForCondition(attribute != null)
.FailWith("Expected {0} {1} to be decorated with {2}{reason}, but that attribute was not found.",
Identifier, Subject, typeof(TAttribute).FullName);
return new AndWhichConstraint<ParameterInfoAssertions, TAttribute>(this, attribute);
}
}
public static class ParameterInfoAssertionExtensions
{
public static ParameterInfoAssertions Should(this ParameterInfo parameterInfo)
{
return new ParameterInfoAssertions(parameterInfo);
}
}
}
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