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Add support for alternate screen buffers

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Closes #250
This commit is contained in:
Patrik Svensson
2021-11-30 13:15:17 +01:00
committed by Phil Scott
parent 2e5d18fa78
commit fd4b96944e
17 changed files with 245 additions and 11 deletions
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3
test/Spectre.Console.Tests/Expectations/AlternateScreen/Show.Output.verified.txt Normal file
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test/Spectre.Console.Tests/Unit/AlternateScreenTests.cs Normal file
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using System.Threading.Tasks;
using Shouldly;
using Spectre.Console.Testing;
using Spectre.Verify.Extensions;
using VerifyXunit;
using Xunit;
namespace Spectre.Console.Tests.Unit
{
[UsesVerify]
[ExpectationPath("AlternateScreen")]
public sealed class AlternateScreenTests
{
[Fact]
public void Should_Throw_If_Alternative_Buffer_Is_Not_Supported_By_Terminal()
{
// Given
var console = new TestConsole();
console.Profile.Capabilities.AlternateBuffer = false;
// When
var result = Record.Exception(() =>
{
console.WriteLine("Foo");
console.AlternateScreen(() =>
{
console.WriteLine("Bar");
});
});
// Then
result.ShouldNotBeNull();
result.Message.ShouldBe("Alternate buffers are not supported by your terminal.");
}
[Fact]
public void Should_Throw_If_Ansi_Is_Not_Supported_By_Terminal()
{
// Given
var console = new TestConsole();
console.Profile.Capabilities.Ansi = false;
console.Profile.Capabilities.AlternateBuffer = true;
// When
var result = Record.Exception(() =>
{
console.WriteLine("Foo");
console.AlternateScreen(() =>
{
console.WriteLine("Bar");
});
});
// Then
result.ShouldNotBeNull();
result.Message.ShouldBe("Alternate buffers are not supported since your terminal does not support ANSI.");
}
[Fact]
[Expectation("Show")]
public async Task Should_Write_To_Alternate_Screen()
{
// Given
var console = new TestConsole();
console.EmitAnsiSequences = true;
console.Profile.Capabilities.AlternateBuffer = true;
// When
console.WriteLine("Foo");
console.AlternateScreen(() =>
{
console.WriteLine("Bar");
});
// Then
await Verifier.Verify(console.Output);
}
}
}