docs: Added XML docs for the first batch of TUnit Attributes

TUnit.Core/Attributes/TestMetadata/CategoryAttribute.cs

@@ -2,13 +2,62 @@
 
 namespace TUnit.Core;
 
+/// <summary>
+/// Adds a category to a test method, test class, or assembly for organizational and filtering purposes.
+/// </summary>
+/// <remarks>
+/// <para>
+/// Categories provide a way to group tests for better organization and selective execution.
+/// Tests can be filtered by category when running tests through the TUnit test runner.
+/// </para>
+/// 
+/// <para>
+/// The attribute can be applied at different levels:
+/// </para>
+/// <list type="bullet">
+/// <item>Method level: Categorizes a specific test method</item>
+/// <item>Class level: Categorizes all test methods in the class</item>
+/// <item>Assembly level: Categorizes all test methods in the assembly</item>
+/// </list>
+/// 
+/// <para>
+/// Multiple categories can be applied to the same target by using multiple instances of this attribute.
+/// </para>
+/// </remarks>
+/// <example>
+/// <code>
+/// [Category("Integration")]
+/// public class IntegrationTests
+/// {
+///     [Test]
+///     [Category("Database")]
+///     public void DatabaseTest()
+///     {
+///         // Test implementation
+///     }
+///     
+///     [Test]
+///     [Category("API")]
+///     [Category("Authentication")]
+///     public void ApiAuthenticationTest()
+///     {
+///         // Test implementation
+///     }
+/// }
+/// </code>
+/// </example>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Assembly, AllowMultiple = true)]
 public class CategoryAttribute(string category) : TUnitAttribute, ITestDiscoveryEventReceiver
 {
+    /// <inheritdoc />
     public int Order => 0;
 
+    /// <summary>
+    /// Gets the name of the category.
+    /// </summary>
     public string Category { get; } = category;
 
+    /// <inheritdoc />
     public void OnTestDiscovery(DiscoveredTestContext discoveredTestContext)
     {
         discoveredTestContext.AddCategory(Category);

TUnit.Core/Attributes/TestMetadata/DependsOnAttribute.cs

@@ -1,54 +1,210 @@
 namespace TUnit.Core;
 
+/// <summary>
+/// Generic version of the <see cref="DependsOnAttribute"/> that specifies a dependency on a test method in a specific class.
+/// </summary>
+/// <typeparam name="T">The type that contains the test method this test depends on.</typeparam>
+/// <remarks>
+/// This generic version simplifies specifying dependencies with strong typing, avoiding the need to use <see cref="Type"/> parameters directly.
+/// </remarks>
+/// <example>
+/// <code>
+/// // The FeatureTest will only run if UserLoginTest passes
+/// [Test]
+/// [DependsOn&lt;LoginTests&gt;("UserLoginTest")]
+/// public void FeatureTest()
+/// {
+///     // This test will only run if UserLoginTest in the LoginTests class has passed
+/// }
+/// </code>
+/// </example>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, AllowMultiple = true)]
 public class DependsOnAttribute<T> : DependsOnAttribute
 {
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute{T}"/> class.
+    /// Specifies a dependency on all test methods in the specified class.
+    /// </summary>
     public DependsOnAttribute() : base(typeof(T))
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute{T}"/> class.
+    /// Specifies a dependency on a specific test method in the specified class.
+    /// </summary>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
     public DependsOnAttribute(string testName) : base(typeof(T), testName)
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute{T}"/> class.
+    /// Specifies a dependency on a specific test method with parameter types in the specified class.
+    /// </summary>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
+    /// <param name="parameterTypes">The parameter types of the test method, used to disambiguate overloaded methods.</param>
     public DependsOnAttribute(string testName, Type[] parameterTypes) : base(typeof(T), testName, parameterTypes)
     {
     }
 }
 
+/// <summary>
+/// Specifies that a test method or class has dependencies on other test methods that must run successfully before this test can execute.
+/// </summary>
+/// <remarks>
+/// <para>
+/// Use this attribute when you have tests that depend on the successful execution of other tests.
+/// A test decorated with this attribute will only run if all its dependencies have passed.
+/// </para>
+/// 
+/// <para>
+/// Dependencies can be specified by:
+/// </para>
+/// <list type="bullet">
+/// <item>Test method name (when depending on a test in the same class)</item>
+/// <item>Test class type (when depending on all tests in another class)</item>
+/// <item>Combination of test class type and method name (when depending on a specific test in another class)</item>
+/// <item>Test method name and parameter types (when depending on a specific overloaded method)</item>
+/// </list>
+/// 
+/// <para>
+/// For better type safety, use the generic version <see cref="DependsOnAttribute{T}"/> when specifying dependencies on tests in other classes.
+/// </para>
+/// 
+/// <para>
+/// When <see cref="ProceedOnFailure"/> is set to true, the test will run even if its dependencies failed.
+/// By default, a test will be skipped if any of its dependencies failed.
+/// </para>
+/// </remarks>
+/// <example>
+/// <code>
+/// // Simple dependency on a test in the same class
+/// [Test]
+/// public void FirstTest() { }
+/// 
+/// [Test]
+/// [DependsOn("FirstTest")]
+/// public void SecondTest() 
+/// {
+///     // This test will only run if FirstTest passes
+/// }
+/// 
+/// // Dependency on a test in another class
+/// [Test]
+/// [DependsOn(typeof(SetupTests), "Initialize")]
+/// public void TestRequiringSetup() 
+/// {
+///     // This test will only run if the Initialize test in SetupTests passes
+/// }
+/// 
+/// // Dependency with overloaded method disambiguation
+/// [Test]
+/// [DependsOn("OverloadedTest", new Type[] { typeof(string), typeof(int) })]
+/// public void TestWithOverloadDependency() { }
+/// 
+/// // Proceeding even if dependency fails
+/// [Test]
+/// [DependsOn("CriticalTest") { ProceedOnFailure = true }]
+/// public void TestThatRunsAnyway() 
+/// {
+///     // This test will run even if CriticalTest fails
+/// }
+/// </code>
+/// </example>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, AllowMultiple = true)]
 public class DependsOnAttribute : TUnitAttribute
 {
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute"/> class.
+    /// Specifies a dependency on a test method in the same class.
+    /// </summary>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
     public DependsOnAttribute(string testName) : this(testName, null!)
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute"/> class.
+    /// Specifies a dependency on an overloaded test method in the same class.
+    /// </summary>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
+    /// <param name="parameterTypes">The parameter types of the test method, used to disambiguate overloaded methods.</param>
     public DependsOnAttribute(string testName, Type[] parameterTypes) : this(null!, testName, parameterTypes)
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute"/> class.
+    /// Specifies a dependency on all test methods in a specific class.
+    /// </summary>
+    /// <param name="testClass">The class containing the test methods that must run successfully before this test.</param>
     public DependsOnAttribute(Type testClass) : this(testClass, null!)
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute"/> class.
+    /// Specifies a dependency on a specific test method in a specific class.
+    /// </summary>
+    /// <param name="testClass">The class containing the test method that must run successfully before this test.</param>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
     public DependsOnAttribute(Type testClass, string testName) : this(testClass, testName, null!)
     {
     }
 
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DependsOnAttribute"/> class.
+    /// Specifies a dependency on a specific overloaded test method in a specific class.
+    /// </summary>
+    /// <param name="testClass">The class containing the test method that must run successfully before this test.</param>
+    /// <param name="testName">The name of the test method that must run successfully before this test.</param>
+    /// <param name="parameterTypes">The parameter types of the test method, used to disambiguate overloaded methods.</param>
     public DependsOnAttribute(Type testClass, string testName, Type[] parameterTypes)
     {
         TestClass = testClass;
         TestName = testName;
         ParameterTypes = parameterTypes;
     }
 
+    /// <summary>
+    /// Gets the class containing the test method this test depends on.
+    /// </summary>
+    /// <remarks>
+    /// If null, the dependency is assumed to be on a test in the same class.
+    /// </remarks>
     public Type? TestClass { get; }
 
+    /// <summary>
+    /// Gets the name of the test method this test depends on.
+    /// </summary>
+    /// <remarks>
+    /// If null, the dependency is assumed to be on all tests in the <see cref="TestClass"/>.
+    /// </remarks>
     public string? TestName { get; }
+
+    /// <summary>
+    /// Gets the parameter types of the test method this test depends on.
+    /// </summary>
+    /// <remarks>
+    /// Used to disambiguate overloaded methods with the same name.
+    /// If null, the first method matching <see cref="TestName"/> will be used.
+    /// </remarks>
     public Type[]? ParameterTypes { get; }
 
+    /// <summary>
+    /// Gets or sets a value indicating whether this test should proceed even if its dependencies have failed.
+    /// </summary>
+    /// <remarks>
+    /// When set to true, the test will run even if its dependencies failed.
+    /// When set to false (default), the test will be skipped if any of its dependencies failed.
+    /// </remarks>
     public bool ProceedOnFailure { get; set; }
 
+    /// <summary>
+    /// Returns a string representation of the dependency.
+    /// </summary>
+    /// <returns>A string that represents the dependency.</returns>
     public override string ToString()
     {
         if (TestClass != null && TestName == null)

TUnit.Core/Attributes/TestMetadata/DisplayNameAttribute.cs

@@ -4,9 +4,34 @@
 
 namespace TUnit.Core;
 
+/// <summary>
+/// Attribute that allows specifying a custom display name for a test method.
+/// </summary>
+/// <remarks>
+/// <para>
+/// This attribute can be applied to test methods to provide more descriptive names than the default method name.
+/// </para>
+/// <para>
+/// The display name can include parameter placeholders in the format of "$parameterName" which will be 
+/// replaced with the actual parameter values during test execution. For example:
+/// <code>
+/// [Test]
+/// [Arguments("John", 25)]
+/// [DisplayName("User $name is $age years old")]
+/// public void TestUser(string name, int age) { ... }
+/// </code>
+/// </para>
+/// <para>
+/// When this test runs, the display name would appear as "User John is 25 years old".
+/// </para>
+/// </remarks>
+/// <param name="displayName">
+/// The display name template. Can include parameter placeholders in the format of "$parameterName".
+/// </param>
 [AttributeUsage(AttributeTargets.Method, Inherited = false)]
 public sealed class DisplayNameAttribute(string displayName) : DisplayNameFormatterAttribute
 {
+    /// <inheritdoc />
     protected override string FormatDisplayName(TestContext testContext)
     {
         var testDetails = testContext.TestDetails;

TUnit.Core/Attributes/TestMetadata/DisplayNameFormatterAttribute.cs

@@ -4,17 +4,37 @@
 
 namespace TUnit.Core;
 
+/// <summary>
+/// Base attribute class that provides functionality for formatting display names of tests in TUnit.
+/// Concrete implementations of this class can customize how test names are displayed in test results.
+/// </summary>
+/// <remarks>
+/// This attribute can be applied at the method, class, or assembly level to control test name formatting.
+/// Subclasses must implement the <see cref="FormatDisplayName"/> method to define custom formatting logic.
+/// The attribute interfaces with the test discovery system to set display names for tests during discovery.
+/// </remarks>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Assembly, Inherited = false)]
 public abstract class DisplayNameFormatterAttribute : TUnitAttribute, ITestDiscoveryEventReceiver
 {
+    /// <inheritdoc />
     public int Order => 0;
 
+    /// <inheritdoc />
     public void OnTestDiscovery(DiscoveredTestContext discoveredTestContext)
     {
         var displayName = FormatDisplayName(discoveredTestContext.TestContext);
 
         discoveredTestContext.SetDisplayName(displayName);
     }
 
+    /// <summary>
+    /// When implemented in derived classes, formats the display name for a test.
+    /// </summary>
+    /// <param name="testContext">
+    /// The test context containing information about the test being discovered.
+    /// </param>
+    /// <returns>
+    /// A string containing the formatted display name for the test.
+    /// </returns>
     protected abstract string FormatDisplayName(TestContext testContext);
 }

TUnit.Core/Attributes/TestMetadata/PropertyAttribute.cs

@@ -2,14 +2,46 @@
 
 namespace TUnit.Core;
 
+/// <summary>
+/// Attaches a custom property with a name-value pair to a test method, test class, or assembly.
+/// These properties can be used for filtering tests or for providing additional metadata.
+/// </summary>
+/// <remarks>
+/// Properties added with this attribute are available during test discovery and execution.
+/// Multiple properties can be added to the same target by using multiple instances of this attribute.
+/// </remarks>
+/// <example>
+/// <code>
+/// [Property("Category", "Integration")]
+/// [Property("Owner", "TestTeam")]
+/// public class MyIntegrationTests
+/// {
+///     [Test]
+///     [Property("Priority", "High")]
+///     public void HighPriorityTest()
+///     {
+///         // Test implementation
+///     }
+/// }
+/// </code>
+/// </example>
 [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Assembly, AllowMultiple = true)]
 public class PropertyAttribute(string name, string value) : TUnitAttribute, ITestDiscoveryEventReceiver
 {
+    /// <inheritdoc />
     public int Order => 0;
 
+    /// <summary>
+    /// Gets the name of the property.
+    /// </summary>
     public string Name { get; } = name;
-    public string Value { get; } = value;
 
+    /// <summary>
+    /// Gets the value of the property.
+    /// </summary>
+    public string Value { get; } = value;
+
+    /// <inheritdoc />
     public void OnTestDiscovery(DiscoveredTestContext discoveredTestContext)
     {
         discoveredTestContext.AddProperty(Name, Value);