public void TestExpressionBody()
{
var syntax = SyntaxFactory.ConstructorDeclaration(SyntaxFactory.Identifier("Anything"))
.WithExpressionBody(SyntaxFactory.ArrowExpressionClause(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression)));
Assert.Same(syntax.ExpressionBody, BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
}
public void TestExpressionBody_Method()
{
var syntax = SyntaxFactory.MethodDeclaration(
SyntaxFactory.PredefinedType(SyntaxFactory.Token(SyntaxKind.IntKeyword)),
SyntaxFactory.Identifier("Anything"));
Assert.Null(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
var expressionBody = SyntaxFactory.ArrowExpressionClause(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression));
syntax = syntax.WithExpressionBody(expressionBody);
Assert.NotNull(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
Assert.Equal(SyntaxKind.NullLiteralExpression, BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax).Expression.Kind());
}
public void TestExpressionBody_ConversionOperator()
{
var syntax = SyntaxFactory.ConversionOperatorDeclaration(
SyntaxFactory.Token(SyntaxKind.ExplicitKeyword),
SyntaxFactory.PredefinedType(SyntaxFactory.Token(SyntaxKind.IntKeyword)));
Assert.Null(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
var expressionBody = SyntaxFactory.ArrowExpressionClause(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression));
syntax = syntax.WithExpressionBody(expressionBody);
Assert.NotNull(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
Assert.Equal(SyntaxKind.NullLiteralExpression, BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax).Expression.Kind());
}
public void TestWithExpressionBody()
{
var syntax = SyntaxFactory.DestructorDeclaration(SyntaxFactory.Identifier("Anything"));
// With default value is allowed
var syntaxWithDefaultBody = DestructorDeclarationSyntaxExtensions.WithExpressionBody(syntax, null);
Assert.Null(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntaxWithDefaultBody));
// Non-default throws an exception
var expressionBody = SyntaxFactory.ArrowExpressionClause(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression));
Assert.Throws <NotSupportedException>(() => DestructorDeclarationSyntaxExtensions.WithExpressionBody(syntax, expressionBody));
}
public void TestExpressionBody_Destructor()
{
var syntax = SyntaxFactory.DestructorDeclaration(SyntaxFactory.Identifier("Anything"));
Assert.Null(BaseMethodDeclarationSyntaxExtensions.ExpressionBody(syntax));
}
