mirror of
https://github.com/gui-cs/Terminal.Gui.git
synced 2025-12-26 15:57:56 +01:00
451 lines
15 KiB
C#
451 lines
15 KiB
C#
using System.Text;
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namespace Terminal.Gui.ViewsTests;
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public class HexViewTests
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{
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[Fact]
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public void AllowEdits_Edits_ApplyEdits ()
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{
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var hv = new HexView (LoadStream (true)) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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Assert.Empty (hv.Edits);
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hv.AllowEdits = false;
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Assert.True (hv.NewKeyDownEvent (Key.Home));
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Assert.False (hv.NewKeyDownEvent (Key.A));
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Assert.Empty (hv.Edits);
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Assert.Equal (126, hv.Source.Length);
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hv.AllowEdits = true;
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Assert.True (hv.NewKeyDownEvent (Key.D4));
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Assert.True (hv.NewKeyDownEvent (Key.D1));
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Assert.Single (hv.Edits);
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Assert.Equal (65, hv.Edits.ToList () [0].Value);
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Assert.Equal ('A', (char)hv.Edits.ToList () [0].Value);
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Assert.Equal (126, hv.Source.Length);
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// Appends byte
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.True (hv.NewKeyDownEvent (Key.D4));
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Assert.True (hv.NewKeyDownEvent (Key.D2));
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Assert.Equal (2, hv.Edits.Count);
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Assert.Equal (66, hv.Edits.ToList () [1].Value);
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Assert.Equal ('B', (char)hv.Edits.ToList () [1].Value);
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Assert.Equal (126, hv.Source.Length);
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hv.ApplyEdits ();
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Assert.Empty (hv.Edits);
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Assert.Equal (127, hv.Source.Length);
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}
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[Fact]
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public void ApplyEdits_With_Argument ()
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{
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byte [] buffer = Encoding.Default.GetBytes ("Fest");
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var original = new MemoryStream ();
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original.Write (buffer, 0, buffer.Length);
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original.Flush ();
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var copy = new MemoryStream ();
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original.Position = 0;
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original.CopyTo (copy);
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copy.Flush ();
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var hv = new HexView (copy) { Width = Dim.Fill (), Height = Dim.Fill () };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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var readBuffer = new byte [hv.Source.Length];
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hv.Source.Position = 0;
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hv.Source.Read (readBuffer);
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Assert.Equal ("Fest", Encoding.Default.GetString (readBuffer));
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Assert.True (hv.NewKeyDownEvent (Key.D5));
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Assert.True (hv.NewKeyDownEvent (Key.D4));
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readBuffer [hv.Edits.ToList () [0].Key] = hv.Edits.ToList () [0].Value;
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Assert.Equal ("Test", Encoding.Default.GetString (readBuffer));
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hv.ApplyEdits (original);
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original.Position = 0;
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original.Read (buffer);
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copy.Position = 0;
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copy.Read (readBuffer);
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Assert.Equal ("Test", Encoding.Default.GetString (buffer));
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Assert.Equal ("Test", Encoding.Default.GetString (readBuffer));
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Assert.Equal (Encoding.Default.GetString (buffer), Encoding.Default.GetString (readBuffer));
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}
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[Fact]
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public void Constructors_Defaults ()
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{
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var hv = new HexView ();
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Assert.NotNull (hv.Source);
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Assert.IsAssignableFrom<MemoryStream> (hv.Source);
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Assert.True (hv.CanFocus);
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Assert.True (hv.AllowEdits);
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hv = new (new MemoryStream ());
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Assert.NotNull (hv.Source);
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Assert.IsAssignableFrom<Stream> (hv.Source);
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Assert.True (hv.CanFocus);
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Assert.True (hv.AllowEdits);
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}
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[Fact]
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[AutoInitShutdown]
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public void CursorPosition_Encoding_Default ()
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{
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var hv = new HexView (LoadStream ()) { Width = Dim.Fill (), Height = Dim.Fill () };
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var top = new Toplevel ();
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top.Add (hv);
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Application.Begin (top);
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Assert.Equal (new (1, 1), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.Enter));
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight.WithCtrl));
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Assert.Equal (hv.CursorPosition.X, hv.BytesPerLine);
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Assert.True (hv.NewKeyDownEvent (Key.Home));
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (new (2, 1), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.CursorDown));
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Assert.Equal (new (2, 2), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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int col = hv.CursorPosition.X;
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int line = hv.CursorPosition.Y;
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int offset = (line - 1) * (hv.BytesPerLine - col);
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Assert.Equal (hv.Position, col * line + offset);
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top.Dispose ();
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}
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[Fact]
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[AutoInitShutdown]
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public void CursorPosition_Encoding_Unicode ()
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{
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var hv = new HexView (LoadStream (true)) { Width = Dim.Fill (), Height = Dim.Fill () };
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var top = new Toplevel ();
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top.Add (hv);
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Application.Begin (top);
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Assert.Equal (new (1, 1), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.Enter));
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight.WithCtrl));
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Assert.Equal (hv.CursorPosition.X, hv.BytesPerLine);
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Assert.True (hv.NewKeyDownEvent (Key.Home));
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (new (2, 1), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.CursorDown));
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Assert.Equal (new (2, 2), hv.CursorPosition);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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int col = hv.CursorPosition.X;
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int line = hv.CursorPosition.Y;
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int offset = (line - 1) * (hv.BytesPerLine - col);
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Assert.Equal (hv.Position, col * line + offset);
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top.Dispose ();
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}
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[Fact]
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public void DiscardEdits_Method ()
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{
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var hv = new HexView (LoadStream (true)) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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Assert.True (hv.NewKeyDownEvent (Key.D4));
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Assert.True (hv.NewKeyDownEvent (Key.D1));
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Assert.Single (hv.Edits);
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Assert.Equal (65, hv.Edits.ToList () [0].Value);
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Assert.Equal ('A', (char)hv.Edits.ToList () [0].Value);
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Assert.Equal (126, hv.Source.Length);
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hv.DiscardEdits ();
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Assert.Empty (hv.Edits);
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}
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[Fact]
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public void DisplayStart_Source ()
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{
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var hv = new HexView (LoadStream (true)) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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Assert.Equal (0, hv.DisplayStart);
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Assert.True (hv.NewKeyDownEvent (Key.PageDown));
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Assert.Equal (4 * hv.Frame.Height, hv.DisplayStart);
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Assert.Equal (hv.Source.Length, hv.Source.Position);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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// already on last page and so the DisplayStart is the same as before
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Assert.Equal (4 * hv.Frame.Height, hv.DisplayStart);
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Assert.Equal (hv.Source.Length, hv.Source.Position);
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}
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[Fact]
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public void Edited_Event ()
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{
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var hv = new HexView (LoadStream (true)) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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KeyValuePair<long, byte> keyValuePair = default;
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hv.Edited += (s, e) => keyValuePair = new (e.Position, e.NewValue);
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Assert.True (hv.NewKeyDownEvent (Key.D4));
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Assert.True (hv.NewKeyDownEvent (Key.D6));
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Assert.Equal (0, (int)keyValuePair.Key);
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Assert.Equal (70, keyValuePair.Value);
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Assert.Equal ('F', (char)keyValuePair.Value);
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}
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[Fact]
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public void Exceptions_Tests ()
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{
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Assert.Throws<ArgumentNullException> (() => new HexView (null));
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Assert.Throws<ArgumentException> (() => new HexView (new NonSeekableStream (new MemoryStream ())));
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}
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[Fact]
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[AutoInitShutdown]
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public void KeyBindings_Command ()
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{
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var hv = new HexView (LoadStream ()) { Width = 20, Height = 10 };
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var top = new Toplevel ();
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top.Add (hv);
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Application.Begin (top);
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Assert.Equal (63, hv.Source.Length);
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Assert.Equal (1, hv.Position);
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Assert.Equal (4, hv.BytesPerLine);
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// right side only needed to press one time
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Assert.True (hv.NewKeyDownEvent (Key.Enter));
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (2, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorLeft));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorDown));
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Assert.Equal (5, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorUp));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.V.WithCtrl));
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Assert.Equal (41, hv.Position);
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Assert.True (hv.NewKeyDownEvent (new (Key.V.WithAlt)));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.PageDown));
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Assert.Equal (41, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.PageUp));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.Equal (64, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.Home));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight.WithCtrl));
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Assert.Equal (4, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorLeft.WithCtrl));
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorDown.WithCtrl));
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Assert.Equal (37, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorUp.WithCtrl));
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Assert.Equal (1, hv.Position);
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top.Dispose ();
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}
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[Fact]
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public void Position_Using_Encoding_Default ()
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{
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var hv = new HexView (LoadStream ()) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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Assert.Equal (63, hv.Source.Length);
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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// left side needed to press twice
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (2, hv.Position);
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// right side only needed to press one time
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Assert.True (hv.NewKeyDownEvent (Key.Enter));
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (2, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorLeft));
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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// last position is equal to the source length
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.Equal (63, hv.Source.Position);
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Assert.Equal (64, hv.Position);
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Assert.Equal (hv.Position - 1, hv.Source.Length);
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}
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[Fact]
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public void Position_Using_Encoding_Unicode ()
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{
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var hv = new HexView (LoadStream (true)) { Width = 20, Height = 20 };
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// Needed because HexView relies on LayoutComplete to calc sizes
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hv.LayoutSubviews ();
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Assert.Equal (126, hv.Source.Length);
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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// left side needed to press twice
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (2, hv.Position);
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// right side only needed to press one time
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Assert.True (hv.NewKeyDownEvent (Key.Enter));
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (2, hv.Position);
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Assert.True (hv.NewKeyDownEvent (Key.CursorLeft));
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (1, hv.Position);
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// last position is equal to the source length
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.Equal (126, hv.Source.Position);
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Assert.Equal (127, hv.Position);
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Assert.Equal (hv.Position - 1, hv.Source.Length);
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}
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[Fact]
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[AutoInitShutdown]
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public void PositionChanged_Event ()
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{
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var hv = new HexView (LoadStream ()) { Width = Dim.Fill (), Height = Dim.Fill () };
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HexViewEventArgs hexViewEventArgs = null;
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hv.PositionChanged += (s, e) => hexViewEventArgs = e;
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var top = new Toplevel ();
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top.Add (hv);
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Application.Begin (top);
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight)); // left side must press twice
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Assert.True (hv.NewKeyDownEvent (Key.CursorRight));
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Assert.True (hv.NewKeyDownEvent (Key.CursorDown));
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Assert.Equal (12, hexViewEventArgs.BytesPerLine);
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Assert.Equal (new (2, 2), hexViewEventArgs.CursorPosition);
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Assert.Equal (14, hexViewEventArgs.Position);
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top.Dispose ();
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}
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[Fact]
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[AutoInitShutdown]
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public void Source_Sets_DisplayStart_And_Position_To_Zero_If_Greater_Than_Source_Length ()
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{
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var hv = new HexView (LoadStream ()) { Width = 10, Height = 5 };
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var top = new Toplevel ();
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top.Add (hv);
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Application.Begin (top);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.Equal (62, hv.DisplayStart);
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Assert.Equal (64, hv.Position);
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hv.Source = new MemoryStream ();
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Assert.Equal (0, hv.DisplayStart);
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Assert.Equal (0, hv.Position - 1);
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hv.Source = LoadStream ();
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hv.Width = Dim.Fill ();
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hv.Height = Dim.Fill ();
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top.LayoutSubviews ();
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Assert.Equal (0, hv.DisplayStart);
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Assert.Equal (0, hv.Position - 1);
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Assert.True (hv.NewKeyDownEvent (Key.End));
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Assert.Equal (0, hv.DisplayStart);
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Assert.Equal (64, hv.Position);
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hv.Source = new MemoryStream ();
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Assert.Equal (0, hv.DisplayStart);
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Assert.Equal (0, hv.Position - 1);
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top.Dispose ();
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}
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private Stream LoadStream (bool unicode = false)
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{
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var stream = new MemoryStream ();
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byte [] bArray;
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var memString = "Hello world.\nThis is a test of the Emergency Broadcast System.\n";
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Assert.Equal (63, memString.Length);
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if (unicode)
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{
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bArray = Encoding.Unicode.GetBytes (memString);
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Assert.Equal (126, bArray.Length);
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}
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else
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{
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bArray = Encoding.Default.GetBytes (memString);
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Assert.Equal (63, bArray.Length);
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}
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stream.Write (bArray);
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return stream;
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}
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private class NonSeekableStream : Stream
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{
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private readonly Stream m_stream;
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public NonSeekableStream (Stream baseStream) { m_stream = baseStream; }
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public override bool CanRead => m_stream.CanRead;
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public override bool CanSeek => false;
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public override bool CanWrite => m_stream.CanWrite;
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public override long Length => throw new NotSupportedException ();
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public override long Position
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{
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get => m_stream.Position;
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set => throw new NotSupportedException ();
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}
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public override void Flush () { m_stream.Flush (); }
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public override int Read (byte [] buffer, int offset, int count) { return m_stream.Read (buffer, offset, count); }
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public override long Seek (long offset, SeekOrigin origin) { throw new NotImplementedException (); }
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public override void SetLength (long value) { throw new NotSupportedException (); }
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public override void Write (byte [] buffer, int offset, int count) { m_stream.Write (buffer, offset, count); }
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}
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}
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