public void CaseTransform_OriginalCaseReturnsCorrectly()
{
var propertyName = "MyPropertyName";
var result = ExpressionHelpers.CaseTransform(propertyName, CaseTransformType.OriginalCase);
Assert.Equal("MyPropertyName", result);
}
public void CaseTransform_SingleCharacterCamelCaseReturnsCorrectly()
{
var propertyName = "M";
var result = ExpressionHelpers.CaseTransform(propertyName, CaseTransformType.CamelCase);
Assert.Equal("m", result);
}
public void CaseTransform_UpperCaseReturnsCorrectly()
{
var propertyName = "MyPropertyName";
var result = ExpressionHelpers.CaseTransform(propertyName, CaseTransformType.UpperCase);
Assert.Equal("MYPROPERTYNAME", result);
}
public void CaseTransform_AllCaseTransformTypesAreImplemented()
{
var propertyName = "MyPropertyName";
foreach (var value in Enum.GetValues(typeof(CaseTransformType)).Cast <CaseTransformType>())
{
ExpressionHelpers.CaseTransform(propertyName, value);
}
//assert no exception is thrown
}
private List <string> GetPathSegments(Expression expr)
{
var listOfSegments = new List <string>();
switch (expr.NodeType)
{
case ExpressionType.ArrayIndex:
var binaryExpression = (BinaryExpression)expr;
listOfSegments.AddRange(GetPathSegments(binaryExpression.Left));
listOfSegments.Add(ExpressionHelpers.CaseTransform(binaryExpression.Right.ToString(), CaseTransformType));
return(listOfSegments);
case ExpressionType.Call:
var methodCallExpression = (MethodCallExpression)expr;
listOfSegments.AddRange(GetPathSegments(methodCallExpression.Object));
listOfSegments.Add(ExpressionHelpers.CaseTransform(EvaluateExpression(methodCallExpression.Arguments[0]), CaseTransformType));
return(listOfSegments);
case ExpressionType.Convert:
listOfSegments.AddRange(GetPathSegments(((UnaryExpression)expr).Operand));
return(listOfSegments);
case ExpressionType.MemberAccess:
var memberExpression = expr as MemberExpression;
listOfSegments.AddRange(GetPathSegments(memberExpression.Expression));
// Get property name, respecting JsonProperty attribute
listOfSegments.Add(ExpressionHelpers.CaseTransform(GetPropertyNameFromMemberExpression(memberExpression), CaseTransformType));
return(listOfSegments);
case ExpressionType.Parameter:
// Fits "x => x" (the whole document which is "" as JSON pointer)
return(listOfSegments);
default:
throw new InvalidOperationException(Resources.FormatExpressionTypeNotSupported(expr));
}
}