Eccelerators.Cli

tests/CompactCliTest.lvt

namespace Eccelerators.Cli.Tests

using Eccelerators.Cli

@Test
component CompactCliTest
{
	cli: CompactCli

	new() { this.cli = new CompactCli() }

	@Test
	fn RetainsFreeTextAndSuppressesCrLfTail()
	{
		var line = "a little story\r\n".Encode()
		for (var index = 0; index < line.Length(); index++) {
			assert this.cli.AcceptByte(line[index])
		}
		assert this.cli.HasLine()
		assert this.cli.GetLineLength() == 14
		var expected: byte[16] = [
			0x61, 0x20, 0x6c, 0x69, 0x74, 0x74, 0x6c, 0x65,
			0x20, 0x73, 0x74, 0x6f, 0x72, 0x79, 0x00, 0x00]
		assert this.cli.CommandEquals(expected, 14)
		assert this.cli.CompleteLine()
		assert this.cli.AcceptByte(0x0a)
		assert !this.cli.HasLine()
	}

	@Test
	fn AppliesBackspaceAndMatchesCommands()
	{
		var prefix = "/resex".Encode()
		for (var index = 0; index < prefix.Length(); index++) {
			assert this.cli.AcceptByte(prefix[index])
		}
		assert this.cli.GetLineLength() == 6
		assert this.cli.AcceptByte(0x08)
		assert this.cli.GetLineLength() == 5
		assert this.cli.AcceptByte(0x74)
		assert this.cli.AcceptByte(0x0d)
		assert this.cli.GetLineLength() == 6
		assert this.cli.GetLineByte(0) == 0x2f
		assert this.cli.GetLineByte(1) == 0x72
		assert this.cli.GetLineByte(2) == 0x65
		assert this.cli.GetLineByte(3) == 0x73
		assert this.cli.GetLineByte(4) == 0x65
		assert this.cli.GetLineByte(5) == 0x74
		var resetCommand: byte[16] = [
			0x2f, 0x72, 0x65, 0x73, 0x65, 0x74, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
		assert this.cli.CommandEquals(resetCommand, 6)
	}

	@Test
	fn ReportsOverflowWithoutCorruptingRetainedLine()
	{
		this.cli.Reset()
		for (var index = 0; index < CompactCli.MAX_LINE_LENGTH; index++) {
			assert this.cli.AcceptByte(0x61)
		}
		assert this.cli.AcceptByte(0x62)
		assert this.cli.AcceptByte(0x0d)
		assert this.cli.HasLine()
		assert this.cli.HasOverflow()
		assert this.cli.GetLineLength() == CompactCli.MAX_LINE_LENGTH
	}

	@Test
	fn BackpressuresStreamingOutput()
	{
		assert this.cli.TryWriteByte(0x41)
		assert !this.cli.TryWriteByte(0x42)
		assert this.cli.HasOutput()
		assert this.cli.PeekOutput() == 0x41
		assert this.cli.ConsumeOutput()
		assert !this.cli.HasOutput()
		assert this.cli.TryWriteByte(0x42)
		assert this.cli.PeekOutput() == 0x42
	}

}

/** Keeps echo configuration isolated from the concurrent compact CLI tests. */
@Test
component CompactCliEchoTest
{
	cli: CompactCli

	new() { this.cli = new CompactCli() }

	@Test
	fn EchoesInputAndEditingWithBackpressure()
	{
		this.cli.EnableEcho()

		assert this.cli.AcceptByte(0x41)
		assert !this.cli.CanAcceptByte()
		assert this.cli.PeekOutput() == 0x41
		assert this.cli.ConsumeOutput()
		assert !this.cli.HasOutput()

		assert this.cli.AcceptByte(0x08)
		assert this.cli.PeekOutput() == 0x08
		assert this.cli.ConsumeOutput()
		assert this.cli.PeekOutput() == 0x20
		assert this.cli.ConsumeOutput()
		assert this.cli.PeekOutput() == 0x08
		assert this.cli.ConsumeOutput()
		assert !this.cli.HasOutput()

		assert this.cli.AcceptByte(0x42)
		assert this.cli.ConsumeOutput()
		assert this.cli.AcceptByte(0x0d)
		assert this.cli.HasLine()
		assert this.cli.PeekOutput() == 0x0d
		assert this.cli.ConsumeOutput()
		assert this.cli.PeekOutput() == 0x0a
		assert this.cli.ConsumeOutput()
		assert !this.cli.HasOutput()
		assert this.cli.CompleteLine()
		assert this.cli.AcceptByte(0x0a)
		assert !this.cli.HasOutput()
	}
}