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1using haddley_blazor_api.Server.Models;
2using Microsoft.AspNetCore.Mvc;
3using Microsoft.EntityFrameworkCore;
4
5using haddley_blazor_api.Server.Controllers;
6
7namespace haddley_blazor_app.Tests;
8
9
10[TestClass]
11public class ToDoControllerTests
12{
13    private ToDoContext? _context;
14    private ToDo? _controller;
15
16    [TestInitialize]
17    public void Initialize()
18    {
19        // Create an in-memory database for testing
20        var options = new DbContextOptionsBuilder<ToDoContext>()
21            .UseInMemoryDatabase(databaseName: "ToDo_TestDatabase")
22            .Options;
23
24        _context = new ToDoContext(options);
25
26        // reset in memory database
27        _context.Database.EnsureDeleted();
28
29        // Seed the database with test data
30        _context.Items.AddRange(new List<Item>
31        {
32            new Item { Id = 1, Description = "Buy milk", Done = false },
33            new Item { Id = 2, Description = "Walk the dog", Done = true },
34            new Item { Id = 3, Description = "Do laundry", Done = false }
35        });
36
37        _context.SaveChanges();
38
39        // Create an instance of the controller to be tested
40        _controller = new ToDo(_context);
41    }
42
43    [TestMethod]
44    public async Task GetItems_ReturnsAllItems()
45    {
46        Assert.IsNotNull(_controller);
47
48        // Arrange
49
50        // Act
51
52        var result = await _controller.GetItems();
53
54        // Assert
55        Assert.IsNotNull(result.Value);
56        Assert.AreEqual(3, result.Value.Count());
57    }
58
59
60
61    [TestMethod]
62    public async Task GetItem_ReturnsNotFound_ForNonExistentId()
63    {
64        Assert.IsNotNull(_controller);
65
66        // Arrange
67        var nonExistentId = 999;
68
69        // Act
70        var result = await _controller.GetItem(nonExistentId);
71
72        // Assert
73        Assert.IsInstanceOfType(result.Result, typeof(NotFoundResult));
74
75    }
76
77
78    [TestMethod]
79    public async Task PostItem_AddsNewItem()
80    {
81        Assert.IsNotNull(_controller);
82        Assert.IsNotNull(_context);
83
84        // Arrange
85        var newItem = new Item { Description = "Clean the house", Done = false };
86
87        // Act
88        var result = await _controller.PostItem(newItem);
89
90        Assert.IsNotNull(result);
91
92        // Assert
93        Assert.IsInstanceOfType(result.Result, typeof(CreatedAtActionResult));
94
95        // Check that the new item was added to the database
96        Assert.AreEqual(4, _context.Items.Count());
97        Assert.IsTrue(_context.Items.Any(i => i.Description == newItem.Description));
98
99    }
100
101
102    [TestMethod]
103    public async Task DeleteItem_RemovesExistingItem()
104    {
105        Assert.IsNotNull(_controller);
106        Assert.IsNotNull(_context);
107
108        // Arrange
109        var existingItem = await _context.Items.FirstOrDefaultAsync(i => i.Description == "Walk the dog");
110
111        Assert.IsNotNull(existingItem);
112
113        // Act
114        var result = await _controller.DeleteItem(existingItem.Id);
115
116        // Assert
117        Assert.IsInstanceOfType(result, typeof(NoContentResult));
118
119        // Check that the item was removed from the database
120        Assert.AreEqual(2, _context.Items.Count());
121        Assert.IsFalse(_context.Items.Any(i => i.Id == existingItem.Id));
122    }
123
124
125}