Eccelerators.Cli

tests/CliLineEditorTest.lvt

namespace Eccelerators.Cli.Tests

using Eccelerators.Cli

@Test
component CliLineEditorTest
{
	editor: CliLineEditor

	new()
	{
		this.editor = new CliLineEditor()
	}

	@Test
	fn TracksPrintableInputLength()
	{
		this.editor.Clear()
		assert this.editor.AcceptByte(0x61) == true
		assert this.editor.AcceptByte(0x62) == true
		assert this.editor.GetLength() == 2
		assert this.editor.IsComplete() == false
	}

	@Test
	fn CompletesOnLineFeed()
	{
		this.editor.Clear()
		assert this.editor.AcceptByte(0x61) == true
		assert this.editor.AcceptByte(0x0A) == true
		assert this.editor.IsComplete() == true
		assert this.editor.AcceptByte(0x62) == false
	}

	@Test
	fn TreatsCrLfAsOneLineEnding()
	{
		this.editor.Clear()
		assert this.editor.AcceptByte(0x0D) == true
		assert this.editor.IsComplete() == true
		this.editor.ResetLine()
		assert this.editor.AcceptByte(0x0A) == true
		assert this.editor.IsComplete() == false
	}

	@Test
	fn BackspaceAndDeleteRemoveCharacters()
	{
		this.editor.Clear()
		assert this.editor.AcceptByte(0x61) == true
		assert this.editor.AcceptByte(0x62) == true
		assert this.editor.AcceptByte(0x08) == true
		assert this.editor.GetLength() == 1
		assert this.editor.AcceptByte(0x7F) == true
		assert this.editor.GetLength() == 0
		assert this.editor.AcceptByte(0x08) == true
		assert this.editor.GetLength() == 0
	}

	@Test
	fn ReportsLineOverflow()
	{
		this.editor.Clear()

		for (var i = 0; i < CliLineEditor.MAX_LINE_LENGTH; i++) {
			assert this.editor.AcceptByte(0x61) == true
		}

		assert this.editor.GetLength() == CliLineEditor.MAX_LINE_LENGTH
		assert this.editor.HasOverflow() == false
		assert this.editor.AcceptByte(0x62) == true
		assert this.editor.HasOverflow() == true
		assert this.editor.GetLength() == CliLineEditor.MAX_LINE_LENGTH
	}

	@Test
	fn IgnoresUnsupportedControlBytes()
	{
		this.editor.Clear()
		assert this.editor.AcceptByte(0x01) == true
		assert this.editor.GetLength() == 0
		assert this.editor.IsComplete() == false
	}
}