void TestR3()
{
"Demonstrating Requirement #3".title();
//demonstrating addition and removal of key/value pairs pairs
WriteLine("\n Database contents before addition");
db.showDB();
WriteLine();
WriteLine(" \n Database contents after addition-----");
DBElement <int, string> insert1 = new DBElement <int, string>();
insert1.name = "first inserted element";
insert1.descr = "int and string values database";
insert1.timeStamp = DateTime.Now;
insert1.children.AddRange(new List <int> {
7, 7, 8, 3, 8, 8, 5, 5, 7
});
insert1.payload = "first inserted elements payload";
db.insert(2, insert1);
DBElement <int, string> insert2 = new DBElement <int, string>();
insert2.name = "second inserted element";
insert2.descr = "int and string values";
insert2.timeStamp = DateTime.Now;
insert2.children.AddRange(new List <int> {
1, 3, 5, 7
});
insert2.payload = "second inserted elements payload";
db.insert(3, insert2);
db.showDB();
WriteLine();
WriteLine(" \n Database before contents are removed");
db.showDB();
WriteLine("\n \n second element to be removed");
db.remove(2);
db.showDB();
WriteLine();
}
static void Main(string[] args)
{
"Testing DBEngine Package".title('=');
WriteLine();
// New element being created
Write("\n --- Test DBElement<int,string> ---");
DBElement <int, string> elem1 = new DBElement <int, string>();
elem1.payload = "a payload";
Write(elem1.showElement <int, string>());
WriteLine();
// New element being created
DBElement <int, string> elem2 = new DBElement <int, string>("Darth Vader", "Evil Overlord");
elem2.payload = "The Empire strikes back!";
Write(elem2.showElement <int, string>());
WriteLine();
// New element being created
var elem3 = new DBElement <int, string>("Luke Skywalker", "Young HotShot");
elem3.children.AddRange(new List <int> {
1, 5, 23
});
elem3.payload = "X-Wing fighter in swamp - Oh oh!";
Write(elem3.showElement <int, string>());
WriteLine();
Write("\n --- Test DBEngine<int,DBElement<int,string>> ---");
int key = 0;
Func <int> keyGen = () => { ++key; return(key); }; // anonymous function to generate keys
DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
bool p1 = db.insert(keyGen(), elem1);
bool p2 = db.insert(keyGen(), elem2);
bool p3 = db.insert(keyGen(), elem3);
if (p1 && p2 && p3)
{
Write("\n all inserts succeeded");
}
else
{
Write("\n at least one insert failed");
}
db.show <int, DBElement <int, string>, string>();
WriteLine();
WriteLine("\n\n removing element of key 2");
bool p4 = db.remove(2);
db.show <int, DBElement <int, string>, string>();
Write("\n --- Test DBElement<string,List<string>> ---");
// New element being created of type string and list of strings
DBElement <string, List <string> > newelem1 = new DBElement <string, List <string> >();
newelem1.name = "newelem1";
newelem1.descr = "test new type";
newelem1.payload = new List <string> {
"one", "two", "three"
};
Write(newelem1.showElement <string, List <string> >());
WriteLine();
Write("\n --- Test DBElement<string,List<string>> ---");
DBElement <string, List <string> > newerelem1 = new DBElement <string, List <string> >();
newerelem1.name = "newerelem1";
newerelem1.descr = "better formatting";
newerelem1.payload = new List <string> {
"alpha", "beta", "gamma"
};
newerelem1.payload.Add("delta");
newerelem1.payload.Add("epsilon");
Write(newerelem1.showElement <string, List <string>, string>());
WriteLine();
//new elements being created
DBElement <string, List <string> > newerelem2 = new DBElement <string, List <string> >();
newerelem2.name = "newerelem2";
newerelem2.descr = "better formatting";
newerelem1.children.AddRange(new[] { "first", "second" });
newerelem2.payload = new List <string> {
"a", "b", "c"
};
newerelem2.payload.Add("d");
newerelem2.payload.Add("e");
Write(newerelem2.showElement <string, List <string>, string>());
WriteLine();
Write("\n --- Test DBEngine<string,DBElement<string,List<string>>> ---");
int seed = 0;
string skey = seed.ToString();
Func <string> skeyGen = () =>
{
++seed;
skey = "string" + seed.ToString();
skey = skey.GetHashCode().ToString();
return(skey);
};
// create a new database of string and list of string type
DBEngine <string, DBElement <string, List <string> > > newdb =
new DBEngine <string, DBElement <string, List <string> > >();
newdb.insert(skeyGen(), newerelem1);
newdb.insert(skeyGen(), newerelem2);
newdb.show <string, DBElement <string, List <string> >, List <string>, string>();
WriteLine();
// removing element
WriteLine("removing element ");
newdb.remove("newerelem2");
newdb.show <string, DBElement <string, List <string> >, List <string>, string>();
// testing editing of metadata text
"testing edits".title();
db.show <int, DBElement <int, string>, string>();
DBElement <int, string> editElement = new DBElement <int, string>();
db.getValue(1, out editElement);
editElement.showElement <int, string>();
editElement.name = "editedName";
editElement.descr = "editedDescription";
db.show <int, DBElement <int, string>, string>();
Write("\n\n");
}