using System.Collections.Generic;
using NUnit.Framework;
using Newtonsoft.Json.Linq;
using MCPForUnity.Editor.Helpers;
namespace MCPForUnityTests.Editor.Helpers
{
/// <summary>
/// Tests for the standard Pagination classes.
/// </summary>
public class PaginationTests
{
#region PaginationRequest Tests
[Test]
public void PaginationRequest_FromParams_ParsesPageSizeSnakeCase()
{
var p = new JObject { ["page_size"] = 25 };
var req = PaginationRequest.FromParams(p);
Assert.AreEqual(25, req.PageSize);
}
[Test]
public void PaginationRequest_FromParams_ParsesPageSizeCamelCase()
{
var p = new JObject { ["pageSize"] = 30 };
var req = PaginationRequest.FromParams(p);
Assert.AreEqual(30, req.PageSize);
}
[Test]
public void PaginationRequest_FromParams_ParsesCursor()
{
var p = new JObject { ["cursor"] = 50 };
var req = PaginationRequest.FromParams(p);
Assert.AreEqual(50, req.Cursor);
}
[Test]
public void PaginationRequest_FromParams_ConvertsPageNumberToCursor()
{
// page_number is 1-based, should convert to 0-based cursor
var p = new JObject { ["page_number"] = 3, ["page_size"] = 10 };
var req = PaginationRequest.FromParams(p);
// Page 3 with page size 10 means items 20-29, so cursor should be 20
Assert.AreEqual(20, req.Cursor);
}
[Test]
public void PaginationRequest_FromParams_CursorTakesPrecedenceOverPageNumber()
{
// If both cursor and page_number are specified, cursor should win
var p = new JObject { ["cursor"] = 100, ["page_number"] = 1 };
var req = PaginationRequest.FromParams(p);
Assert.AreEqual(100, req.Cursor);
}
[Test]
public void PaginationRequest_FromParams_UsesDefaultsForNullParams()
{
var req = PaginationRequest.FromParams(null);
Assert.AreEqual(50, req.PageSize);
Assert.AreEqual(0, req.Cursor);
}
[Test]
public void PaginationRequest_FromParams_UsesDefaultsForEmptyParams()
{
var req = PaginationRequest.FromParams(new JObject());
Assert.AreEqual(50, req.PageSize);
Assert.AreEqual(0, req.Cursor);
}
[Test]
public void PaginationRequest_FromParams_AcceptsCustomDefaultPageSize()
{
var req = PaginationRequest.FromParams(new JObject(), defaultPageSize: 100);
Assert.AreEqual(100, req.PageSize);
}
[Test]
public void PaginationRequest_FromParams_HandleStringValues()
{
// Some clients might send string values
var p = new JObject { ["page_size"] = "15", ["cursor"] = "5" };
var req = PaginationRequest.FromParams(p);
Assert.AreEqual(15, req.PageSize);
Assert.AreEqual(5, req.Cursor);
}
#endregion
#region PaginationResponse Tests
[Test]
public void PaginationResponse_Create_ReturnsCorrectPageOfItems()
{
var allItems = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
var request = new PaginationRequest { PageSize = 3, Cursor = 0 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(3, response.Items.Count);
Assert.AreEqual(new List<int> { 1, 2, 3 }, response.Items);
}
[Test]
public void PaginationResponse_Create_ReturnsCorrectMiddlePage()
{
var allItems = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
var request = new PaginationRequest { PageSize = 3, Cursor = 3 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(3, response.Items.Count);
Assert.AreEqual(new List<int> { 4, 5, 6 }, response.Items);
}
[Test]
public void PaginationResponse_Create_HandlesLastPage()
{
var allItems = new List<int> { 1, 2, 3, 4, 5 };
var request = new PaginationRequest { PageSize = 3, Cursor = 3 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(2, response.Items.Count);
Assert.AreEqual(new List<int> { 4, 5 }, response.Items);
Assert.IsNull(response.NextCursor);
Assert.IsFalse(response.HasMore);
}
[Test]
public void PaginationResponse_HasMore_TrueWhenNextCursorSet()
{
var allItems = new List<int> { 1, 2, 3, 4, 5, 6 };
var request = new PaginationRequest { PageSize = 3, Cursor = 0 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.IsTrue(response.HasMore);
Assert.AreEqual(3, response.NextCursor);
}
[Test]
public void PaginationResponse_HasMore_FalseWhenNoMoreItems()
{
var allItems = new List<int> { 1, 2, 3 };
var request = new PaginationRequest { PageSize = 10, Cursor = 0 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.IsFalse(response.HasMore);
Assert.IsNull(response.NextCursor);
}
[Test]
public void PaginationResponse_Create_SetsCorrectTotalCount()
{
var allItems = new List<string> { "a", "b", "c", "d", "e" };
var request = new PaginationRequest { PageSize = 2, Cursor = 0 };
var response = PaginationResponse<string>.Create(allItems, request);
Assert.AreEqual(5, response.TotalCount);
}
[Test]
public void PaginationResponse_Create_HandlesEmptyList()
{
var allItems = new List<int>();
var request = new PaginationRequest { PageSize = 10, Cursor = 0 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(0, response.Items.Count);
Assert.AreEqual(0, response.TotalCount);
Assert.IsNull(response.NextCursor);
Assert.IsFalse(response.HasMore);
}
[Test]
public void PaginationResponse_Create_ClampsCursorToValidRange()
{
var allItems = new List<int> { 1, 2, 3 };
var request = new PaginationRequest { PageSize = 10, Cursor = 100 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(0, response.Items.Count);
Assert.AreEqual(3, response.Cursor); // Clamped to totalCount
}
[Test]
public void PaginationResponse_Create_HandlesNegativeCursor()
{
var allItems = new List<int> { 1, 2, 3 };
var request = new PaginationRequest { PageSize = 10, Cursor = -5 };
var response = PaginationResponse<int>.Create(allItems, request);
Assert.AreEqual(0, response.Cursor); // Clamped to 0
Assert.AreEqual(3, response.Items.Count);
}
#endregion
}
}
