using pgLabII.PgUtils.ConnectionStrings;

namespace pgLabII.PgUtils.Tests.ConnectionStrings;

public class PqConnectionStringParserTests
{
    private readonly UnitTestTokenizer tokenizer = new();

    private const string kw = "ab";
    private const string val = "cd";

    public PqConnectionStringParserTests()
    {
        tokenizer
            .AddString(kw)
            .AddEquals()
            .AddString(val)
            .AddEof();
    }

    [Fact]
    public void Success()
    {
        var parser = new PqConnectionStringParser(tokenizer);
        IDictionary<string, string> output = parser.Parse();

        Assert.Single(output);
        Assert.True(output.TryGetValue(kw, out string? result));
        Assert.Equal(val, result);
    }

    [Fact]
    public void StaticParse()
    {
        var output = PqConnectionStringParser.Parse("foo=bar");
        Assert.Single(output);
        Assert.True(output.TryGetValue("foo", out string? result));
        Assert.Equal("bar", result);
    }
    // There are few tests here as this is a predictive parser and all error handling is done
    // in the tokenizer
}