namespace RangeBan.Tests;

[TestFixture]
public class IpRangeTests
{
    [Test]
    public void IsInRange_WithNullInput_ReturnsFalse()
    {
        Assert.That(RangeBan.IsInRange("192.168.1.0/24", null), Is.False);
    }

    [Test]
    public void IsInRange_WithEmptyInput_ReturnsFalse()
    {
        Assert.That(RangeBan.IsInRange("192.168.1.0/24", ""), Is.False);
    }

    [Test]
    public void IsInRange_WithInvalidRange_ReturnsFalse()
    {
        Assert.That(RangeBan.IsInRange("invalid-range", "192.168.1.1"), Is.False);
    }

    [TestCase("192.168.1.0/24", "192.168.1.1", true)]
    [TestCase("192.168.1.0/24", "192.168.1.254", true)]
    [TestCase("192.168.1.0/24", "192.168.2.1", false)]
    [TestCase("192.168.1.0/24", "10.0.0.1", false)]
    [TestCase("176.2.0.0/16", "176.2.73.23", true)]
    [TestCase("176.2.0.0/16", "176.2.70.50", true)]
    [TestCase("176.2.0.0/16", "176.2.72.1", true)]
    public void IsInRange_WithCidrNotation_ReturnsExpectedResult(string range, string ip, bool expected)
    {
        Assert.That(RangeBan.IsInRange(range, ip), Is.EqualTo(expected));
    }

    [TestCase("192.168.2.0/33")]
    [TestCase("192.168.1.0/invalid")]
    public void IsInRange_WithInvalidCidrNotation_ReturnsFalse(string range)
    {
        Assert.That(RangeBan.IsInRange(range, "192.168.1.1"), Is.False);
    }

    [Test]
    public void IsInRange_WithInvalidIpAddress_ThrowsArgumentException()
    {
        Assert.Throws<ArgumentException>(() => RangeBan.IsInRange("192.168.1.0/24", "invalid.ip.address"));
    }

    [TestCase("192.168.1.0/24", "192.168.1")]
    [TestCase("192.168.1.0/24", "192.168.1.1.1")]
    [TestCase("192.168.1.0/24", "not.an.ip.address")]
    public void IsInRange_WithMalformedIpAddress_ThrowsArgumentException(string range, string ip)
    {
        Assert.Throws<ArgumentException>(() => RangeBan.IsInRange(range, ip));
    }

    [Test]
    public void IsInRange_WithValidPublicIp_DoesNotThrow()
    {
        Assert.DoesNotThrow(() => RangeBan.IsInRange("192.168.1.0/24", "8.8.8.8"));
    }
}