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Add code coverage for RichTextBox #11034

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Add code coverage for RichTextBox #11034

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eb54f31
Add code coverage for RichTextBox
Zheng-Li01 Mar 12, 2024
fbc7a22
Handle FeedBacks
Zheng-Li01 Mar 18, 2024
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281 changes: 281 additions & 0 deletions src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/RichTextBoxTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -10673,6 +10673,277 @@ public void RichTextBox_GetCharIndexFromPosition_Invoke_ReturnsExpected(int x, i
Assert.Equal(0, createdCallCount);
}

// DrawToBitmap doesn't work for this control, so we should hide it. We'll
// still call base so that this has a chance to work if it can.
[WinFormsFact]
public void RichTextBox_DrawToBitmap_Invoke_Success()
{
using Bitmap bitmap1 = new(10, 10);
using RichTextBox richTextBox1 = new();
richTextBox1.DrawToBitmap(bitmap1, new Rectangle(0, 0, 10, 10));

bitmap1.Width.Should().Be(10);
bitmap1.Height.Should().Be(10);
}

[WinFormsFact]
public void RichTextBox_SaveFilePath_Invoke_Success()
{
using RichTextBox richTextBox1 = new()
{
Rtf = @"{\rtf1\ansi{Sample for {\v HIDDEN }text}}"
};
using RichTextBox richTextBox2 = new();

string fileName = "SaveRichTextBox.rtf";
string projectDirectory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "..", "..", "..", "..", "..");
string filePath = $"{projectDirectory}/src/System.Windows.Forms/tests/UnitTests/TestResources/Files/{fileName}";

try
{
richTextBox1.SaveFile(filePath);
richTextBox2.LoadFile(filePath);
int startOfSample = richTextBox2.Text.IndexOf("Sample", StringComparison.Ordinal);
int endOfText = richTextBox2.Text.IndexOf("text", StringComparison.Ordinal) + "text".Length;
richTextBox2.Select(startOfSample, endOfText - startOfSample);

richTextBox2.Rtf.Should().NotBeNullOrEmpty();
richTextBox2.SelectedText.Should().Be("Sample for HIDDEN text");
}
finally
{
File.Delete(filePath);
}
}

[WinFormsTheory]
[InlineData(RichTextBoxStreamType.RichText)]
[InlineData(RichTextBoxStreamType.PlainText)]
[InlineData(RichTextBoxStreamType.UnicodePlainText)]
[InlineData(RichTextBoxStreamType.RichNoOleObjs)]
[InlineData(RichTextBoxStreamType.TextTextOleObjs)]
public void RichTextBox_SaveFile_Invoke_Success(RichTextBoxStreamType fileType)
{
using RichTextBox richTextBox1 = new();
string projectDirectory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "..", "..", "..", "..", "..");
string filePath = Path.Combine(projectDirectory, "src", "System.Windows.Forms", "tests", "UnitTests", "TestResources", "Files", "Test");

try
{
richTextBox1.SaveFile(filePath, fileType);
File.Exists(filePath).Should().BeTrue();
}
finally
{
File.Delete(filePath);
}
}

public static TheoryData<string> PlainTextData => new()
{
{ "Hello World" },
{ new string('a', 10000) },
{ "Special characters: !@#$%^&*()" },
};

[WinFormsTheory]
[MemberData(nameof(PlainTextData))]
public void RichTextBox_Paste_PlainText_Data(string value)
{
using RichTextBox richTextBox1 = new();

if (!string.IsNullOrEmpty(value))
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{
Clipboard.SetText(value);
richTextBox1.Paste(DataFormats.GetFormat(DataFormats.Text));

richTextBox1.Text.Should().Be(value);
}
}

[WinFormsFact]
public void RichTextBox_Paste_EmptyString_Data()
{
using RichTextBox richTextBox1 = new();

Clipboard.SetText("non-empty");
Clipboard.Clear();
richTextBox1.Paste(DataFormats.GetFormat(DataFormats.Text));

richTextBox1.Text.Should().Be("");
}

public static TheoryData<string> RtfData => new()
{
{ "{\\rtf Hello World}" },
{ "{\\rtf1\\ansi{Sample for {\\v HIDDEN }text}}" },
{ "{\\rtf1\\ansi{Invalid RTF data" },
};

[WinFormsTheory]
[MemberData(nameof(RtfData))]
public void RichTextBox_Paste_Rtf_Data(string rtf)
{
using RichTextBox richTextBox1 = new();

if (!string.IsNullOrEmpty(rtf))
{
Clipboard.SetText(rtf);
richTextBox1.Paste(DataFormats.GetFormat(DataFormats.Rtf));

richTextBox1.Rtf.Should().StartWith("{\\rtf");
}
}

[WinFormsFact]
public void RichTextBox_DragDropEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
DragEventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
callCount++;
};

DragEventArgs dragEventArgs = new DragEventArgs(
data: null,
keyState: 0,
x: 0,
y: 0,
allowedEffect: DragDropEffects.None,
effect: DragDropEffects.None);

richTextBox1.DragDrop += handler;
richTextBox1.OnDragDrop(dragEventArgs);
callCount.Should().Be(1);

richTextBox1.DragDrop -= handler;
richTextBox1.OnDragDrop(dragEventArgs);
callCount.Should().Be(1);
}

[WinFormsFact]
public void RichTextBox_DragEnterEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
DragEventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
callCount++;
};

DragEventArgs dragEventArgs = new DragEventArgs(
data: null,
keyState: 0,
x: 0,
y: 0,
allowedEffect: DragDropEffects.None,
effect: DragDropEffects.None);

richTextBox1.DragEnter += handler;
richTextBox1.OnDragDrop(dragEventArgs);
callCount.Should().Be(0);

richTextBox1.DragEnter -= handler;
richTextBox1.OnDragDrop(dragEventArgs);
callCount.Should().Be(0);
}

[WinFormsFact]
public void RichTextBox_DragLeaveEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
EventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
e.Should().Be(EventArgs.Empty);
callCount++;
};

richTextBox1.DragLeave += handler;
richTextBox1.OnDragLeave(EventArgs.Empty);
callCount.Should().Be(1);

richTextBox1.DragLeave -= handler;
richTextBox1.OnDragLeave(EventArgs.Empty);
callCount.Should().Be(1);
}

[WinFormsFact]
public void RichTextBox_DragOverEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
DragEventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
callCount++;
};

DragEventArgs dragEventArgs = new DragEventArgs(
data: null,
keyState: 0,
x: 0,
y: 0,
allowedEffect: DragDropEffects.None,
effect: DragDropEffects.None);

richTextBox1.DragOver += handler;
richTextBox1.OnDragOver(dragEventArgs);
callCount.Should().Be(1);

richTextBox1.DragOver -= handler;
richTextBox1.OnDragOver(dragEventArgs);
callCount.Should().Be(1);
}

[WinFormsFact]
public void RichTextBox_GiveFeedbackEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
GiveFeedbackEventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
callCount++;
};

GiveFeedbackEventArgs giveFeedbackEventArgs = new(DragDropEffects.None, useDefaultCursors: true);

richTextBox1.GiveFeedback += handler;
richTextBox1.OnGiveFeedback(giveFeedbackEventArgs);
callCount.Should().Be(1);

richTextBox1.GiveFeedback -= handler;
richTextBox1.OnGiveFeedback(giveFeedbackEventArgs);
callCount.Should().Be(1);
}

[WinFormsFact]
public void RichTextBox_QueryContinueDragEvent_AddRemove_Success()
{
using SubRichTextBox richTextBox1 = new();
int callCount = 0;
QueryContinueDragEventHandler handler = (sender, e) =>
{
sender.Should().Be(richTextBox1);
callCount++;
};

QueryContinueDragEventArgs queryContinueDragEventArgs = new(keyState: 0, escapePressed: true, action: DragAction.Continue);

richTextBox1.QueryContinueDrag += handler;
richTextBox1.OnQueryContinueDrag(queryContinueDragEventArgs);
callCount.Should().Be(1);

richTextBox1.QueryContinueDrag -= handler;
richTextBox1.OnQueryContinueDrag(queryContinueDragEventArgs);
callCount.Should().Be(1);
}

private class CustomGetParaFormatRichTextBox : RichTextBox
{
public bool MakeCustom { get; set; }
Expand Down Expand Up @@ -10804,6 +11075,16 @@ private class SubRichTextBox : RichTextBox
public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);

public new void WndProc(ref Message m) => base.WndProc(ref m);

public new void OnDragDrop(DragEventArgs e) => base.OnDragDrop(e);

public new void OnDragLeave(EventArgs e) => base.OnDragLeave(e);

public new void OnDragOver(DragEventArgs e) => base.OnDragOver(e);

public new void OnGiveFeedback(GiveFeedbackEventArgs e) => base.OnGiveFeedback(e);

public new void OnQueryContinueDrag(QueryContinueDragEventArgs e) => base.OnQueryContinueDrag(e);
}

private static unsafe string GetClassName(HWND hWnd)
Expand Down