Add basic coverage for the MultiComboBox component.

COMET.Web.Common.Tests/Components/MultiComboBoxTestFixture.cs

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+// --------------------------------------------------------------------------------------------------------------------
+//  <copyright file="MultiComboBoxTestFixture.cs" company="RHEA System S.A.">
+//     Copyright (c) 2023 RHEA System S.A.
+// 
+//     Authors: Sam Gerené, Alex Vorobiev, Alexander van Delft, Jaime Bernar, Théate Antoine
+// 
+//     This file is part of COMET WEB Community Edition
+//     The COMET WEB Community Edition is the RHEA Web Application implementation of ECSS-E-TM-10-25 Annex A and Annex C.
+// 
+//     The COMET WEB Community Edition is free software; you can redistribute it and/or
+//     modify it under the terms of the GNU Affero General Public
+//     License as published by the Free Software Foundation; either
+//     version 3 of the License, or (at your option) any later version.
+// 
+//     The COMET WEB Community Edition is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Affero General Public License for more details.
+// 
+//    You should have received a copy of the GNU Affero General Public License
+//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//  </copyright>
+//  --------------------------------------------------------------------------------------------------------------------
+
+namespace COMET.Web.Common.Tests.Components;
+
+using Bunit;
+
+using CDP4Common.DTO;
+
+using COMET.Web.Common.Components;
+using COMET.Web.Common.Test.Helpers;
+
+using DevExpress.Blazor;
+
+using Microsoft.AspNetCore.Authorization.Infrastructure;
+
+using TestContext = Bunit.TestContext;
+
+using NUnit.Framework;
+
+[TestFixture]
+public class MultiComboBoxTestFixture
+{
+    private TestContext context;
+    private IRenderedComponent<MultiComboBox<Category>> component;
+    private List<Category> availableCategories;
+
+    [SetUp]
+    public void SetUp()
+    {
+        this.context = new TestContext();
+        this.context.ConfigureDevExpressBlazor();
+
+        this.availableCategories = new List<Category>
+        {
+            new() { Name = "Category" }
+        };
+
+        this.component = this.context.RenderComponent<MultiComboBox<Category>>(parameter =>
+        {
+            parameter.Add(p => p.Data, this.availableCategories);
+            parameter.Add(p => p.Values, this.availableCategories);
+            parameter.Add(p => p.ShowCheckBoxes, true);
+            parameter.Add(p => p.MaxNumberOfChips, 2);
+            parameter.Add(p => p.Enabled, true);
+        });
+    }
+
+    [Test]
+    public void VerifyComponent()
+    {
+        Assert.Multiple(() =>
+        {
+            Assert.IsTrue(this.component.Instance.Enabled);
+            Assert.IsNotEmpty(this.component.Instance.Data);
+            Assert.IsNotEmpty(this.component.Instance.Values);
+            Assert.IsTrue(this.component.Instance.ShowCheckBoxes);
+        });
+
+        this.component.Render();
+
+        var comboBox = this.component.FindComponent<DxComboBox<Category,Category>>();
+
+        Assert.Multiple(() =>
+        {
+            Assert.IsNotNull(comboBox);
+        });
+    }
+}