public void PaintCellsBackground_InvalidRowIndex_ThrowsInvalidOperationException(int rowIndex)
{
using (var image = new Bitmap(10, 10))
using (Graphics graphics = Graphics.FromImage(image))
{
var dataGridView = new DataGridView();
dataGridView.Columns.Add("name", "text");
var e = new DataGridViewRowPostPaintEventArgs(dataGridView, graphics, Rectangle.Empty, Rectangle.Empty, rowIndex, DataGridViewElementStates.Displayed, null, new DataGridViewCellStyle(), false, false);
Assert.Throws <InvalidOperationException>(() => e.PaintCellsBackground(new Rectangle(1, 2, 3, 4), true));
}
}
public void PaintCellsBackground_ValidRowIndex_Success()
{
using (var image = new Bitmap(10, 10))
using (Graphics graphics = Graphics.FromImage(image))
{
var dataGridView = new DataGridView();
dataGridView.Columns.Add("name", "text");
var e = new DataGridViewRowPostPaintEventArgs(dataGridView, graphics, Rectangle.Empty, Rectangle.Empty, 0, DataGridViewElementStates.Displayed, null, new DataGridViewCellStyle(), false, false);
e.PaintCellsBackground(new Rectangle(1, 2, 3, 4), true);
}
}