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Add unit test case for DataGridView 16 events #11556

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Jun 27, 2024
Merged

Add unit test case for DataGridView 16 events #11556

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344 changes: 343 additions & 1 deletion src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/DataGridViewTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3026,7 +3026,7 @@ public void DataGridView_AlternatingRowsDefaultCellStyleChangedEvent_Raised_Succ
};

_dataGridView.AlternatingRowsDefaultCellStyleChanged += handler;
_dataGridView.AlternatingRowsDefaultCellStyle = new DataGridViewCellStyle { BackColor = Color.AliceBlue };
_dataGridView.AlternatingRowsDefaultCellStyle = new() { BackColor = Color.AliceBlue };
callCount.Should().Be(1);

_dataGridView.AlternatingRowsDefaultCellStyleChanged -= handler;
Expand Down Expand Up @@ -3113,4 +3113,346 @@ public void DataGridView_CellBorderStyleChangedEvent_Raised_Success()
_dataGridView.CellBorderStyle = DataGridViewCellBorderStyle.Single;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_ColumnHeadersBorderStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.ColumnHeadersBorderStyleChanged += handler;
_dataGridView.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single;
callCount.Should().Be(1);

_dataGridView.ColumnHeadersBorderStyleChanged -= handler;
_dataGridView.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Raised;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_ColumnHeadersDefaultCellStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().BeOfType<DataGridViewCellStyleChangedEventArgs>();
callCount++;
};

_dataGridView.ColumnHeadersDefaultCellStyleChanged += handler;
_dataGridView.ColumnHeadersDefaultCellStyle = new() { BackColor = Color.Red };
callCount.Should().Be(1);

_dataGridView.ColumnHeadersDefaultCellStyleChanged -= handler;
_dataGridView.ColumnHeadersDefaultCellStyle = new();
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_DataMemberChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.DataMemberChanged += handler;
_dataGridView.DataMember = "TestMember";
callCount.Should().Be(1);

_dataGridView.DataMemberChanged -= handler;
_dataGridView.DataMember = "AnotherTestMember";
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_DataSourceChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.DataSourceChanged += handler;
_dataGridView.DataSource = new();
callCount.Should().Be(1);

_dataGridView.DataSourceChanged -= handler;
_dataGridView.DataSource = new();
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_DefaultCellStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().BeOfType<DataGridViewCellStyleChangedEventArgs>();
callCount++;
};

_dataGridView.DefaultCellStyleChanged += handler;
_dataGridView.DefaultCellStyle = new() { BackColor = Color.Red };
callCount.Should().Be(1);

_dataGridView.DefaultCellStyleChanged -= handler;
_dataGridView.DefaultCellStyle = new();
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_EditModeChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.EditModeChanged += handler;
_dataGridView.EditMode = DataGridViewEditMode.EditOnEnter;
callCount.Should().Be(1);

_dataGridView.EditModeChanged -= handler;
_dataGridView.EditMode = DataGridViewEditMode.EditOnKeystroke;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_GridColorChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.GridColorChanged += handler;
_dataGridView.GridColor = Color.Red;
callCount.Should().Be(1);

_dataGridView.GridColorChanged -= handler;
_dataGridView.GridColor = Color.Blue;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_MultiSelectChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.MultiSelectChanged += handler;
_dataGridView.MultiSelect = false;
callCount.Should().Be(1);

_dataGridView.MultiSelectChanged -= handler;
_dataGridView.MultiSelect = true;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_ReadOnlyChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.ReadOnlyChanged += handler;
_dataGridView.ReadOnly = true;
callCount.Should().Be(1);

_dataGridView.ReadOnlyChanged -= handler;
_dataGridView.ReadOnly = false;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_RowHeadersBorderStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.RowHeadersBorderStyleChanged += handler;
_dataGridView.RowHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single;
callCount.Should().Be(1);

_dataGridView.RowHeadersBorderStyleChanged -= handler;
_dataGridView.RowHeadersBorderStyle = DataGridViewHeaderBorderStyle.Raised;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_RowHeadersDefaultCellStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().BeOfType<DataGridViewCellStyleChangedEventArgs>();
callCount++;
};

_dataGridView.RowHeadersDefaultCellStyleChanged += handler;
_dataGridView.RowHeadersDefaultCellStyle = new();
callCount.Should().Be(1);

_dataGridView.RowHeadersDefaultCellStyleChanged -= handler;
_dataGridView.RowHeadersDefaultCellStyle = new();
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_RowsDefaultCellStyleChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().BeOfType<DataGridViewCellStyleChangedEventArgs>();
callCount++;
};

_dataGridView.RowsDefaultCellStyleChanged += handler;
_dataGridView.RowsDefaultCellStyle = new() { BackColor = Color.Red };
callCount.Should().Be(1);

_dataGridView.RowsDefaultCellStyleChanged -= handler;
_dataGridView.RowsDefaultCellStyle = new();
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_CurrentCellChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.Columns.Add("Column1", "Column1");
_dataGridView.Rows.Add();
_dataGridView.Rows.Add();

_dataGridView.CurrentCellChanged += handler;
_dataGridView.CurrentCell = _dataGridView[0, 0];
callCount.Should().Be(1);

_dataGridView.CurrentCellChanged -= handler;
_dataGridView.CurrentCell = _dataGridView[0, 1];
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_CurrentCellDirtyStateChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.Columns.Add("Column1", "Column1");
_dataGridView.Rows.Add();
_dataGridView.Rows.Add();

_dataGridView.CurrentCellDirtyStateChanged += handler;
_dataGridView.CurrentCell = _dataGridView[0, 0];
_dataGridView[0, 0].Value = true;
_dataGridView.NotifyCurrentCellDirty(true);
callCount.Should().Be(1);

_dataGridView.CurrentCellDirtyStateChanged -= handler;
_dataGridView.CurrentCell = _dataGridView[0, 1];
_dataGridView[0, 1].Value = true;
_dataGridView.NotifyCurrentCellDirty(true);
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_SelectionChangedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.Columns.Add("Column1", "Column1");
_dataGridView.Rows.Add();
_dataGridView.Rows.Add();

_dataGridView.SelectionChanged += handler;
_dataGridView.ClearSelection();
_dataGridView.Rows[0].Selected = true;
callCount.Should().Be(1);

_dataGridView.SelectionChanged -= handler;
_dataGridView.ClearSelection();
_dataGridView.Rows[1].Selected = true;
callCount.Should().Be(1);
}

[WinFormsFact]
public void DataGridView_SortedEvent_Raised_Success()
{
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(_dataGridView);
e.Should().Be(EventArgs.Empty);
callCount++;
};

_dataGridView.Columns.Add("Column1", "Column1");
_dataGridView.Rows.Add("B");
_dataGridView.Rows.Add("A");

_dataGridView.Sorted += handler;
_dataGridView.Sort(_dataGridView.Columns[0], ListSortDirection.Ascending);
callCount.Should().Be(1);

_dataGridView.Sorted -= handler;
_dataGridView.Sort(_dataGridView.Columns[0], ListSortDirection.Descending);
callCount.Should().Be(1);
}
}