94 lines
3.8 KiB
C#
94 lines
3.8 KiB
C#
using TermRemoteCtl.Agent.Terminal.Screen;
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namespace TermRemoteCtl.Agent.Tests.Terminal;
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public sealed class TerminalScreenEngineTests
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{
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[Fact]
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public void ApplyOutput_Clear_Removes_Stale_Lines_From_Visible_Snapshot()
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{
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var engine = new TerminalScreenEngine(rows: 4, cols: 20);
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engine.ApplyOutput("first line\r\nsecond line", sourceSequence: 1);
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engine.ApplyOutput("\u001b[2J\u001b[Hprompt> ", sourceSequence: 2);
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var snapshot = engine.CreateSnapshot("session-1");
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Assert.Equal(2L, snapshot.SourceSequence);
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Assert.Equal(2L, snapshot.ScreenVersion);
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Assert.StartsWith("prompt> ", snapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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Assert.DoesNotContain(
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snapshot.PrimaryBuffer.Viewport,
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line => line.Text.Contains("first line", StringComparison.Ordinal));
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Assert.Equal(0, snapshot.CursorRow);
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Assert.Equal(8, snapshot.CursorColumn);
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}
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[Fact]
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public void ApplyOutput_Cursor_Movement_And_Insert_Produces_Final_Visible_Line()
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{
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var engine = new TerminalScreenEngine(rows: 4, cols: 40);
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engine.ApplyOutput("PS> gst", sourceSequence: 1);
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engine.ApplyOutput("\u001b[2D", sourceSequence: 2);
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engine.ApplyOutput("it", sourceSequence: 3);
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var snapshot = engine.CreateSnapshot("session-1");
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Assert.StartsWith("PS> git", snapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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Assert.Equal(0, snapshot.CursorRow);
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Assert.Equal(7, snapshot.CursorColumn);
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Assert.Equal(3L, snapshot.SourceSequence);
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Assert.Equal(3L, snapshot.ScreenVersion);
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}
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[Fact]
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public void ApplyOutput_Alternate_Buffer_Preserves_Primary_And_Restores_On_Exit()
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{
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var engine = new TerminalScreenEngine(rows: 4, cols: 20);
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engine.ApplyOutput("primary view", sourceSequence: 1);
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engine.ApplyOutput("\u001b[?1049halt view", sourceSequence: 2);
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var alternateSnapshot = engine.CreateSnapshot("session-1");
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Assert.Equal("alternate", alternateSnapshot.ActiveBuffer);
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Assert.StartsWith("alt view", alternateSnapshot.AlternateBuffer!.Viewport[0].Text, StringComparison.Ordinal);
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Assert.StartsWith("primary view", alternateSnapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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engine.ApplyOutput("\u001b[?1049l", sourceSequence: 3);
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var restoredSnapshot = engine.CreateSnapshot("session-1");
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Assert.Equal("primary", restoredSnapshot.ActiveBuffer);
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Assert.StartsWith("primary view", restoredSnapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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Assert.StartsWith("alt view", restoredSnapshot.AlternateBuffer!.Viewport[0].Text, StringComparison.Ordinal);
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}
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[Theory]
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[InlineData("\u001b[?1047h", "\u001b[?1047l")]
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[InlineData("\u001b[?47h", "\u001b[?47l")]
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public void ApplyOutput_Alternate_Buffer_Compatibility_Modes_Switch_Buffers(
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string enterSequence,
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string exitSequence)
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{
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var engine = new TerminalScreenEngine(rows: 4, cols: 20);
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engine.ApplyOutput("primary", sourceSequence: 1);
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engine.ApplyOutput($"{enterSequence}alt", sourceSequence: 2);
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var alternateSnapshot = engine.CreateSnapshot("session-1");
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Assert.Equal("alternate", alternateSnapshot.ActiveBuffer);
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Assert.StartsWith("alt", alternateSnapshot.AlternateBuffer!.Viewport[0].Text, StringComparison.Ordinal);
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Assert.StartsWith("primary", alternateSnapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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engine.ApplyOutput(exitSequence, sourceSequence: 3);
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var restoredSnapshot = engine.CreateSnapshot("session-1");
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Assert.Equal("primary", restoredSnapshot.ActiveBuffer);
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Assert.StartsWith("primary", restoredSnapshot.PrimaryBuffer.Viewport[0].Text, StringComparison.Ordinal);
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}
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}
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