[Test] public void Equals()
{
DataSet ds = new DataSet();
DataTable dtParent = DataProvider.CreateParentDataTable();
DataTable dtChild = DataProvider.CreateChildDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
dtParent.PrimaryKey = new DataColumn[] {dtParent.Columns[0]};
ds.EnforceConstraints = true;
ForeignKeyConstraint fc1,fc2;
fc1 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[0]);
fc2 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[1]);
// different columnn
Assert.AreEqual(false, fc1.Equals(fc2), "FKC3");
//Two System.Data.ForeignKeyConstraint are equal if they constrain the same columns.
// same column
fc2 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[0]);
Assert.AreEqual(true, fc1.Equals(fc2), "FKC4");
}
public void EqualsAndHashCode()
{
DataTable tbl = _ds.Tables[0];
DataTable tbl2 = _ds.Tables[1];
ForeignKeyConstraint fkc = new ForeignKeyConstraint(
new DataColumn[] {tbl.Columns[0], tbl.Columns[1]} ,
new DataColumn[] {tbl2.Columns[0], tbl2.Columns[1]} );
ForeignKeyConstraint fkc2 = new ForeignKeyConstraint(
new DataColumn[] {tbl.Columns[0], tbl.Columns[1]} ,
new DataColumn[] {tbl2.Columns[0], tbl2.Columns[1]} );
ForeignKeyConstraint fkcDiff =
new ForeignKeyConstraint( tbl.Columns[1], tbl.Columns[2]);
Assert.IsTrue( fkc.Equals(fkc2) , "Equals Assert.IsTrue.Failed. 1");
Assert.IsTrue( fkc2.Equals(fkc) , "Equals Assert.IsTrue.Failed. 2");
Assert.IsTrue( fkc.Equals(fkc) , "Equals Assert.IsTrue.Failed. 3");
Assert.IsTrue( fkc.Equals(fkcDiff) == false , "Equals Assert.IsTrue.Failed diff. 1");
//Assert.IsTrue( "Hash Code Assert.IsTrue.Failed. 1", fkc.GetHashCode() == fkc2.GetHashCode() );
Assert.IsTrue( fkc.GetHashCode() != fkcDiff.GetHashCode() , "Hash Code Assert.IsTrue.Failed. 2");
}
//Activate This Construntor to log All To Standard output
//public TestClass():base(true){}
//Activate this constructor to log Failures to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, false){}
//Activate this constructor to log All to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, true){}
//BY DEFAULT LOGGING IS DONE TO THE STANDARD OUTPUT ONLY FOR FAILURES
public void run()
{
Exception exp = null;
DataSet ds = new DataSet();
DataTable dtParent = GHTUtils.DataProvider.CreateParentDataTable();
DataTable dtChild = GHTUtils.DataProvider.CreateChildDataTable();
ds.Tables.Add(dtParent);
ds.Tables.Add(dtChild);
dtParent.PrimaryKey = new DataColumn[] {dtParent.Columns[0]};
ds.EnforceConstraints = true;
ForeignKeyConstraint fc1,fc2;
fc1 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[0]);
fc2 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[1]);
try
{
BeginCase("different columnn");
Compare(fc1.Equals(fc2),false);
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
//Two System.Data.ForeignKeyConstraint are equal if they constrain the same columns.
try
{
BeginCase("same column");
fc2 = new ForeignKeyConstraint(dtParent.Columns[0],dtChild.Columns[0]);
Compare(fc1.Equals(fc2),true);
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
}
