318 lines
13 KiB
C#
318 lines
13 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.ComponentModel.DataAnnotations;
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using System.Threading.Tasks;
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using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Messaging;
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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namespace CommunityToolkit.Mvvm.UnitTests;
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[TestClass]
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public partial class Test_ArgumentNullException
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{
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[TestMethod]
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public void Test_ArgumentNullException_ObservableObject()
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{
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TestObservableObject model = new();
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Assert(() => model.NullPropertyChanged(), "e");
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Assert(() => model.NullPropertyChanging(), "e");
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Assert(() => model.SetProperty(comparer: null!), "comparer");
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Assert(() => model.SetProperty(callback: (Action<string>)null!), "callback");
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Assert(() => model.SetProperty(comparer: null!, s => { }), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, callback: null!), "callback");
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Assert(() => model.SetProperty(model: null!, (object m, string v) => { }), "model");
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Assert(() => model.SetProperty(new object(), callback: null!), "callback");
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Assert(() => model.SetProperty(comparer: null!, new object(), (object m, string v) => { }), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, model: null!, (object m, string v) => { }), "model");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, new object(), callback: null!), "callback");
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Assert(() => model.SetProperty(callback: (Action<Task?>)null!), "callback");
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Assert(() => model.SetProperty(callback: (Action<Task<string>?>)null!), "callback");
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}
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[TestMethod]
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public void Test_ArgumentNullException_ObservableRecipient()
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{
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Assert(() => new TestObservableRecipient(null!), "messenger");
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TestObservableRecipient model = new(new WeakReferenceMessenger());
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Assert(() => model.SetProperty(comparer: null!), "comparer");
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Assert(() => model.SetProperty(callback: null!), "callback");
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Assert(() => model.SetProperty(comparer: null!, s => { }), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, callback: null!), "callback");
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Assert(() => model.SetProperty(model: null!, (object m, string v) => { }), "model");
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Assert(() => model.SetProperty(new object(), callback: null!), "callback");
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Assert(() => model.SetProperty(comparer: null!, new object(), (object m, string v) => { }), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, model: null!, (object m, string v) => { }), "model");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, new object(), callback: null!), "callback");
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}
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[TestMethod]
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public void Test_ArgumentNullException_ObservableValidator()
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{
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Assert(() => new TestObservableValidator(null!), "validationContext");
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TestObservableValidator model = new();
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Assert(() => model.SetProperty(propertyName: null!), "propertyName");
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Assert(() => model.SetProperty(comparer: null!, ""), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, propertyName: null!), "propertyName");
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Assert(() => model.SetProperty(callback: null!, ""), "callback");
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Assert(() => model.SetProperty(s => { }, propertyName: null!), "propertyName");
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Assert(() => model.SetProperty(comparer: null!, s => { }, ""), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, callback: null!, ""), "callback");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, s => { }, propertyName: null!), "propertyName");
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Assert(() => model.SetProperty(model: null!, (m, v) => { }, ""), "model");
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Assert(() => model.SetProperty(new object(), callback: null!, ""), "callback");
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Assert(() => model.SetProperty(new object(), (m, v) => { }, propertyName: null!), "propertyName");
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Assert(() => model.SetProperty(comparer: null!, new object(), (m, v) => { }, ""), "comparer");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, model: null!, (m, v) => { }, ""), "model");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, new object(), callback: null!, ""), "callback");
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Assert(() => model.SetProperty(EqualityComparer<string>.Default, new object(), (m, v) => { }, propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(comparer: null!, ""), "comparer");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(callback: null!, ""), "callback");
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Assert(() => model.TrySetProperty(s => { }, propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(comparer: null!, s => { }, ""), "comparer");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, callback: null!, ""), "callback");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, s => { }, propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(model: null!, (m, v) => { }, ""), "model");
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Assert(() => model.TrySetProperty(new object(), callback: null!, ""), "callback");
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Assert(() => model.TrySetProperty(new object(), (m, v) => { }, propertyName: null!), "propertyName");
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Assert(() => model.TrySetProperty(comparer: null!, new object(), (m, v) => { }, ""), "comparer");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, model: null!, (m, v) => { }, ""), "model");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, new object(), callback: null!, ""), "callback");
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Assert(() => model.TrySetProperty(EqualityComparer<string>.Default, new object(), (m, v) => { }, propertyName: null!), "propertyName");
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Assert(() => model.ValidateProperty(null!), "propertyName");
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}
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private class TestObservableObject : ObservableObject
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{
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public void NullPropertyChanged()
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{
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OnPropertyChanged((PropertyChangedEventArgs)null!);
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}
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public void NullPropertyChanging()
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{
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OnPropertyChanging((PropertyChangingEventArgs)null!);
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}
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public void SetProperty(IEqualityComparer<string> comparer)
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{
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string dummy = "";
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_ = SetProperty(ref dummy, dummy, comparer);
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}
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public void SetProperty(Action<string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, callback);
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}
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public void SetProperty(IEqualityComparer<string> comparer, Action<string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, callback);
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}
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public void SetProperty(object model, Action<object, string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, model, callback);
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}
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public void SetProperty(IEqualityComparer<string> comparer, object model, Action<object, string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, model, callback);
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}
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public void SetProperty(Action<Task?> callback)
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{
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TaskNotifier? dummy = null;
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_ = SetPropertyAndNotifyOnCompletion(ref dummy, null, callback);
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}
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public void SetProperty(Action<Task<string>?> callback)
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{
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TaskNotifier<string>? dummy = null;
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_ = SetPropertyAndNotifyOnCompletion(ref dummy, null, callback);
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}
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}
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private class TestObservableRecipient : ObservableRecipient
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{
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public TestObservableRecipient(IMessenger messenger)
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: base(messenger)
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{
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}
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public void SetProperty(IEqualityComparer<string> comparer)
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{
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string dummy = "";
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_ = SetProperty(ref dummy, dummy, comparer, true);
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}
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public void SetProperty(Action<string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, callback, true);
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}
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public void SetProperty(IEqualityComparer<string> comparer, Action<string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, callback, true);
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}
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public void SetProperty(object model, Action<object, string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, model, callback, true);
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}
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public void SetProperty(IEqualityComparer<string> comparer, object model, Action<object, string> callback)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, model, callback, true);
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}
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}
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internal class TestObservableValidator : ObservableValidator
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{
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public TestObservableValidator()
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{
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}
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public TestObservableValidator(ValidationContext validationContext)
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: base(validationContext)
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{
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}
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public void SetProperty(string propertyName)
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{
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string dummy = "";
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_ = SetProperty(ref dummy, dummy, true, propertyName);
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}
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public void SetProperty(IEqualityComparer<string> comparer, string propertyName)
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{
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string dummy = "";
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_ = SetProperty(ref dummy, dummy, comparer, true, propertyName);
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}
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public void SetProperty(Action<string> callback, string propertyName)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, callback, true, propertyName);
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}
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public void SetProperty(IEqualityComparer<string> comparer, Action<string> callback, string propertyName)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, callback, true, propertyName);
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}
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public void SetProperty(object model, Action<object, string> callback, string propertyName)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, model, callback, true, propertyName);
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}
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public void SetProperty(IEqualityComparer<string> comparer, object model, Action<object, string> callback, string propertyName)
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{
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string dummy = "";
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_ = SetProperty(dummy, dummy, comparer, model, callback, true, propertyName);
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}
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public void TrySetProperty(string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(ref dummy, dummy, out _, propertyName);
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}
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public void TrySetProperty(IEqualityComparer<string> comparer, string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(ref dummy, dummy, comparer, out _, propertyName);
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}
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public void TrySetProperty(Action<string> callback, string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(dummy, dummy, callback, out _, propertyName);
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}
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public void TrySetProperty(IEqualityComparer<string> comparer, Action<string> callback, string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(dummy, dummy, comparer, callback, out _, propertyName);
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}
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public void TrySetProperty(object model, Action<object, string> callback, string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(dummy, dummy, model, callback, out _, propertyName);
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}
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public void TrySetProperty(IEqualityComparer<string> comparer, object model, Action<object, string> callback, string propertyName)
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{
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string dummy = "";
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_ = TrySetProperty(dummy, dummy, comparer, model, callback, out _, propertyName);
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}
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public void ValidateProperty(string propertyName)
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{
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base.ValidateProperty("", propertyName);
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}
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}
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/// <summary>
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/// Asserts that a given <see cref="Action"/> thrown an <see cref="System.ArgumentNullException"/> for the specified parameter.
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/// </summary>
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/// <param name="action">The input <see cref="Action"/> to invoke.</param>
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/// <param name="parameterName">The parameter name to check.</param>
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private static void Assert(Action action, string parameterName)
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{
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System.ArgumentNullException exception = Microsoft.VisualStudio.TestTools.UnitTesting.Assert.ThrowsException<System.ArgumentNullException>(action);
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Microsoft.VisualStudio.TestTools.UnitTesting.Assert.AreEqual(exception.ParamName, parameterName);
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}
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}
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