public void TenEmptyColumns()
{
DataColumnCollection d = new DataColumnCollection();
DataColumn[] cols = new DataColumn[10];
for (int i = 0; i < 10; i++)
{
cols[i] = new DoubleColumn();
d.Add(cols[i]);
}
Assert.AreEqual(10, d.ColumnCount);
Assert.AreEqual(0, d.RowCount);
Assert.AreEqual(false, d.IsDirty);
Assert.AreEqual(false, d.IsSuspended);
Assert.AreEqual("A", d.GetColumnName(0));
Assert.AreEqual("A", d[0].Name);
Assert.AreEqual("J", d.GetColumnName(9));
Assert.AreEqual("J", d[9].Name);
// Test index to column resolution
for (int i = 0; i < 10; i++)
{
Assert.AreEqual(cols[i], d[i]);
}
// test name to column resolution
for (int i = 0; i < 10; i++)
{
char name = (char)('A' + i);
Assert.AreEqual(cols[i], d[name.ToString()], "Column to name resolution of col " + name.ToString());
}
// test column to number resolution
for (int i = 0; i < 10; i++)
{
Assert.AreEqual(i, d.GetColumnNumber(cols[i]));
}
}