' Licensed to the .NET Foundation under one or more agreements.
' The .NET Foundation licenses this file to you under the MIT license.
' See the LICENSE file in the project root for more information.
 
Imports Microsoft.CodeAnalysis.Test.Utilities
Imports Roslyn.Test.Utilities
 
Namespace Microsoft.VisualStudio.LanguageServices.UnitTests.CodeModel.MethodXML
    Partial Public Class MethodXMLTests
 
        <WpfFact, Trait(Traits.Feature, Traits.Features.CodeModelMethodXml)>
        Public Sub TestCSEvents_AddDelegate()
            Dim definition =
<Workspace>
    <Project Language="C#" CommonReferences="true">
        <Document>
public class C
{
    $$void M()
    {
        this.Goo += Bar;
    }
 
    private void Bar(object sender, System.EventArgs e) { }
 
    public event System.EventHandler Goo;
}
        </Document>
    </Project>
</Workspace>
 
            Dim expected =
<Block>
    <ExpressionStatement line="5">
        <Expression>
            <Assignment binaryoperator="adddelegate">
                <Expression>
                    <NameRef variablekind="field">
                        <Expression>
                            <ThisReference/>
                        </Expression>
                        <Name>Goo</Name>
                    </NameRef>
                </Expression>
                <Expression>
                    <NameRef variablekind="method">
                        <Expression>
                            <ThisReference/>
                        </Expression>
                        <Name>Bar</Name>
                    </NameRef>
                </Expression>
            </Assignment>
        </Expression>
    </ExpressionStatement>
</Block>
 
            Test(definition, expected)
        End Sub
 
        <WpfFact, Trait(Traits.Feature, Traits.Features.CodeModelMethodXml)>
        Public Sub TestCSEvents_AddDelegateForNonExistentEventHandler1()
            Dim definition =
<Workspace>
    <Project Language="C#" CommonReferences="true">
        <Document>
public class C
{
    $$void M()
    {
        this.Goo += Bar;
    }
 
    public event System.EventHandler Goo;
}
        </Document>
    </Project>
</Workspace>
 
            ' Note: The expected result below is slightly different than Dev10 behavior.
            ' In Dev10, the NameRef for Bar will have a variablekind of "local", but
            ' "unknown" is really more correct and shouldn't impact the designer.
            Dim expected =
<Block>
    <ExpressionStatement line="5"><Expression>
        <Assignment binaryoperator="adddelegate">
            <Expression>
                <NameRef variablekind="field">
                    <Expression>
                        <ThisReference/>
                    </Expression>
                    <Name>Goo</Name>
                </NameRef>
            </Expression>
            <Expression>
                <NameRef variablekind="unknown">
                    <Name>Bar</Name>
                </NameRef>
            </Expression>
        </Assignment>
        </Expression>
    </ExpressionStatement>
</Block>
 
            Test(definition, expected)
        End Sub
 
        <WpfFact, Trait(Traits.Feature, Traits.Features.CodeModelMethodXml)>
        Public Sub TestCSEvents_AddDelegateForNonExistentEventHandler2()
            Dim definition =
<Workspace>
    <Project Language="C#" CommonReferences="true">
        <Document>
public class C
{
    $$void M()
    {
        this.Goo += this.Bar;
    }
 
    public event System.EventHandler Goo;
}
        </Document>
    </Project>
</Workspace>
 
            ' Note: The expected result below is slightly different than Dev10 behavior.
            ' In Dev10, the NameRef for Bar will have a variablekind of "property", but
            ' "unknown" is really more correct and shouldn't impact the designer.
            Dim expected =
<Block>
    <ExpressionStatement line="5">
        <Expression>
            <Assignment binaryoperator="adddelegate">
                <Expression>
                    <NameRef variablekind="field">
                        <Expression>
                            <ThisReference/>
                        </Expression>
                        <Name>Goo</Name>
                    </NameRef>
                </Expression>
                <Expression>
                    <NameRef variablekind="unknown">
                        <Expression>
                            <ThisReference/>
                        </Expression>
                        <Name>Bar</Name>
                    </NameRef>
                </Expression>
            </Assignment>
        </Expression>
    </ExpressionStatement>
</Block>
 
            Test(definition, expected)
        End Sub
 
        <WpfFact, Trait(Traits.Feature, Traits.Features.CodeModelMethodXml)>
        Public Sub TestCSEvents_AddDelegateForNonExistentEventHandler3()
            Dim definition =
<Workspace>
    <Project Language="C#" CommonReferences="true">
        <Document>
public class C
{
    $$void M()
    {
        this.Goo += new System.EventHandler(this.Bar);
    }
 
    public event System.EventHandler Goo;
}
        </Document>
    </Project>
</Workspace>
 
            Dim expected =
<Block>
    <ExpressionStatement line="5">
        <Expression>
            <Assignment binaryoperator="adddelegate">
                <Expression>
                    <NameRef variablekind="field">
                        <Expression>
                            <ThisReference/>
                        </Expression>
                        <Name>Goo</Name>
                    </NameRef>
                </Expression>
                <Expression>
                    <NewClass>
                        <Type>System.EventHandler</Type>
                        <Argument>
                            <Expression>
                                <NameRef variablekind="unknown">
                                    <Expression>
                                        <ThisReference/>
                                    </Expression>
                                    <Name>Bar</Name>
                                </NameRef>
                            </Expression>
                        </Argument>
                    </NewClass>
                </Expression>
            </Assignment>
        </Expression>
    </ExpressionStatement>
</Block>
 
            Test(definition, expected)
        End Sub
 
    End Class
End Namespace