public void Expand_SelectSingleField_OneFieldSelectorReturned()
{
const string MyField = "myField";
List <FieldSelectorTreeNode> tree = FieldSelectorParser.Expand(MyField);
Assert.Equal(1, tree.Count);
Assert.Equal(MyField, tree[0].MemberName);
Assert.True(tree[0].Children.IsEmpty());
}
public void Expand_SelectOneNestedField_TreeHasOneNestedSelector()
{
const string RootField = "contacttypes";
const string SubField = "type";
string nestedFieldSelector = RootField + FieldSelectorConstants.NestedFieldSelector + SubField;
List <FieldSelectorTreeNode> tree = FieldSelectorParser.Expand(nestedFieldSelector);
Assert.Equal(1, tree.Count);
Assert.Equal(RootField, tree[0].MemberName);
Assert.Equal(1, tree[0].Children.Count);
Assert.Equal(SubField, tree[0].Children[0].MemberName);
Assert.True(tree[0].Children[0].Children.IsEmpty());
}
public void Expand_FieldSelectorBegineWithReservedToken_ThrowArgumentException()
{
bool exceptionCaught = false;
try
{
FieldSelectorParser.Expand(FieldSelectorConstants.BeginSubSelectExpression.ToString());
}
catch (ArgumentException ex)
{
exceptionCaught = true;
Assert.True(
ex.Message.Contains("A reserved token can not be the first character of the fields selector."));
}
Assert.True(exceptionCaught, "No Argument Exception caught!");
}
public void Expand_SubSelectionTokenPreceedByAnotherToken_ThrowArgumentException()
{
bool exceptionCaught = false;
try
{
FieldSelectorParser.Expand(
"myField" + FieldSelectorConstants.NestedFieldSelector
+ FieldSelectorConstants.BeginSubSelectExpression);
}
catch (ArgumentException ex)
{
exceptionCaught = true;
Assert.True(ex.Message.Contains("Begin Subselection token"));
Assert.True(ex.Message.Contains("can not be preceeded by another reserved token"));
}
Assert.True(exceptionCaught, "No Argument Exception caught!");
}
public void Expand_ComplexNestedFieldString_ReturnsParsedTree()
{
List <FieldSelectorTreeNode> tree =
FieldSelectorParser.Expand(
"person(name(first,last),address(zip,street)),person/salary,link(url,description/short)");
FieldSelectorTreeNode personNode = tree.Find(item => item.MemberName == "person");
Assert.NotNull(personNode);
Assert.Equal(3, personNode.Children.Count);
Assert.NotNull(personNode.Children.Find(item => item.MemberName == "salary"));
FieldSelectorTreeNode nameNode = personNode.Children.Find(item => item.MemberName == "name");
Assert.NotNull(nameNode);
Assert.Equal(2, nameNode.Children.Count);
Assert.NotNull(nameNode.Children.Find(item => item.MemberName == "first"));
Assert.NotNull(nameNode.Children.Find(item => item.MemberName == "last"));
FieldSelectorTreeNode addressNode = personNode.Children.Find(item => item.MemberName == "address");
Assert.NotNull(addressNode);
Assert.Equal(2, addressNode.Children.Count);
Assert.NotNull(addressNode.Children.Find(item => item.MemberName == "zip"));
Assert.NotNull(addressNode.Children.Find(item => item.MemberName == "street"));
FieldSelectorTreeNode linkNode = tree.Find(item => item.MemberName == "link");
Assert.NotNull(linkNode);
Assert.Equal(2, linkNode.Children.Count);
Assert.NotNull(linkNode.Children.Find(item => item.MemberName == "url"));
FieldSelectorTreeNode descriptionNode = linkNode.Children.Find(item => item.MemberName == "description");
Assert.NotNull(descriptionNode);
Assert.Equal(1, descriptionNode.Children.Count);
Assert.NotNull(descriptionNode.Children.Find(item => item.MemberName == "short"));
}
public void Expand_EmptyFieldSelectorString_ReturnsEmptyList()
{
Assert.Equal(0, FieldSelectorParser.Expand(string.Empty).Count);
}
public void Expand_WhitespaceFieldSelectorString_ReturnsEmptyList()
{
Assert.Equal(0, FieldSelectorParser.Expand(" \t \n \r").Count);
}
public void Expand_NullFieldSelectorString_ReturnsEmptyList()
{
Assert.Equal(0, FieldSelectorParser.Expand(null).Count);
}
