using System.Collections;
using Xunit;

namespace XFEExtension.NetCore.AutoConfig.Tests;

public sealed class CollectionTests
{
    [Fact]
    public void ProfileListSupportsAllMutationPathsAndSnapshotEnumeration()
    {
        var list = new ProfileList<int>();
        list.Add(1);
        ((IList)list).Add(2);
        list.AddRange(new[] { 3, 4 });
        list.AddRange(new ReadOnlySpan<int>([5, 6]));
        list[0] = 10;
        ((IList)list)[1] = 20;
        list.Insert(2, 30);
        ((IList)list).Insert(3, 40);
        var snapshot = list.ToArray();
        list.Remove(30);
        ((IList)list).Remove(40);
        list.RemoveAt(0);

        Assert.Equal([10, 20, 30, 40, 3, 4, 5, 6], snapshot);
        Assert.Equal([20, 3, 4, 5, 6], list.ToArray());
        list.Clear();
        Assert.Empty(list);
    }

    [Fact]
    public void ProfileDictionarySupportsAllMutationPathsAndSnapshotEnumeration()
    {
        var dictionary = new ProfileDictionary<string, int>();
        dictionary.Add("one", 1);
        dictionary.Add(new KeyValuePair<string, int>("two", 2));
        ((IDictionary)dictionary).Add("three", 3);
        Assert.True(dictionary.TryAdd("four", 4));
        dictionary["one"] = 10;
        ((IDictionary)dictionary)["two"] = 20;
        var snapshot = dictionary.ToDictionary();
        dictionary.Remove("three");
        dictionary.Remove(new KeyValuePair<string, int>("four", 4));
        ((IDictionary)dictionary).Remove("one");

        Assert.Equal(4, snapshot.Count);
        Assert.Equal(10, snapshot["one"]);
        Assert.Equal(20, dictionary["two"]);
        Assert.Single(dictionary);
        dictionary.Clear();
        Assert.Empty(dictionary);
    }
}