public void ExpressionBodyPropertyWriterTest()
{
var pw = SetupPropertyWriter(PatternPropType, PatternPropName, (DeclPropType1, DeclPropName1));
var implPatternPropNode = SyntaxTreeHelper.GetExpressionBodyPropertyImplSyntax(
PatternPropType,
PatternPropName,
$"this.{PatternFieldName}");
var generatedProperty = NodeWriterHelper
.WriteAndAssertSingleMemberOfType <PropertyDeclarationSyntax>(pw, implPatternPropNode);
Assert.Equal(DeclPropName1, generatedProperty.Identifier.Text);
Assert.Equal(DeclPropType1, generatedProperty.Type.ToString());
Assert.NotNull(generatedProperty.ExpressionBody);
Assert.Equal($"=> this.{DeclFieldName1}", generatedProperty.ExpressionBody.ToString());
}