using DotnetStandardStreams;

namespace DotnetStandardStreamsTests;

public class ListTextSourceTests
{
	[Fact]
	public void ReadsFromList()
	{
		ITextSource reader = new ListTextSource(["1", "2", "", "3"]);
		string s0 = reader.Read();
		s0.ShouldNotBeNull();
		s0.ShouldBe("1");
		reader.Eof().ShouldBe(false);

		string s1 = reader.Read();
		s1.ShouldNotBeNull();
		s1.ShouldBe("2");
		reader.Eof().ShouldBe(false);

		string s2 = reader.Read();
		s2.ShouldNotBeNull();
		s2.ShouldBe(string.Empty);
		reader.Eof().ShouldBe(false);

		string s3 = reader.Read();
		s3.ShouldNotBeNull();
		s3.ShouldBe("3");
		reader.Eof().ShouldBe(false);

		string s4 = reader.Read();
		s4.ShouldBe("");
		reader.Eof().ShouldBe(true);
	}

	[Fact]
	public void ReadsFromEmptyList()
	{
		ITextSource reader = new ListTextSource([]);
		_ = reader.Read();
		reader.Eof().ShouldBe(true);
	}
}