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Merge pull request #43 from justinsa/master
RequiredHttpAttribute and some regular expressions
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DataAnnotationsExtensions.Tests/ValidationAttributes/RequiredHttpAttributeTests.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| using System.ComponentModel.DataAnnotations; | ||
| using System.Globalization; | ||
| using System.IO; | ||
| using System.Web; | ||
| using DataAnnotationsExtensions.ServerSideValidators; | ||
| using Microsoft.VisualStudio.TestTools.UnitTesting; | ||
|
|
||
| namespace DataAnnotationsExtensions.Tests.ValidationAttributes | ||
| { | ||
| [TestClass] | ||
| public class RequiredHttpAttributeTests | ||
| { | ||
| [TestMethod] | ||
| public void IsValidFallbackTests() | ||
| { | ||
| var attribute = new RequiredHttpAttribute(); | ||
|
|
||
| Assert.IsTrue(attribute.IsValid("A")); | ||
| Assert.IsTrue(attribute.IsValid("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")); | ||
| Assert.IsFalse(attribute.IsValid(" ")); | ||
| Assert.IsFalse(attribute.IsValid(null)); | ||
| Assert.IsFalse(attribute.IsValid(string.Empty)); | ||
| } | ||
|
|
||
| [TestMethod] | ||
| public void IsValidRequiredTests() | ||
| { | ||
| var attribute = new RequiredHttpAttribute() | ||
| { | ||
| HttpMethod = "GET" | ||
| }; | ||
| HttpRequest request = new HttpRequest("test", "http://localhost", string.Empty) | ||
| { | ||
| RequestType = "GET" | ||
| }; | ||
| HttpResponse response = new HttpResponse(HttpWriter.Null); | ||
| HttpContext.Current = new HttpContext(request, response); | ||
|
|
||
| Assert.IsTrue(attribute.IsValid("A")); | ||
| Assert.IsTrue(attribute.IsValid("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")); | ||
| Assert.IsFalse(attribute.IsValid(" ")); | ||
| Assert.IsFalse(attribute.IsValid(null)); | ||
| Assert.IsFalse(attribute.IsValid(string.Empty)); | ||
| } | ||
|
|
||
| [TestMethod] | ||
| public void IsValidMultiMethodRequiredTests() | ||
| { | ||
| var attribute = new RequiredHttpAttribute() | ||
| { | ||
| HttpMethod = "GeT|PosT" | ||
| }; | ||
| HttpRequest request = new HttpRequest("test", "http://localhost", string.Empty) | ||
| { | ||
| RequestType = "post" | ||
| }; | ||
| HttpResponse response = new HttpResponse(HttpWriter.Null); | ||
| HttpContext.Current = new HttpContext(request, response); | ||
|
|
||
| Assert.IsTrue(attribute.IsValid("A")); | ||
| Assert.IsTrue(attribute.IsValid("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")); | ||
| Assert.IsFalse(attribute.IsValid(" ")); | ||
| Assert.IsFalse(attribute.IsValid(null)); | ||
| Assert.IsFalse(attribute.IsValid(string.Empty)); | ||
| } | ||
|
|
||
| [TestMethod] | ||
| public void IsValidIgnoreRequiredTests() | ||
| { | ||
| var attribute = new RequiredHttpAttribute() | ||
| { | ||
| HttpMethod = "POST" | ||
| }; | ||
| HttpRequest request = new HttpRequest("test", "http://localhost", string.Empty) | ||
| { | ||
| RequestType = "Get" | ||
| }; | ||
| HttpContext context = new HttpContext(request, null); | ||
|
|
||
| Assert.IsTrue(attribute.IsValid("A")); | ||
| Assert.IsTrue(attribute.IsValid("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")); | ||
| Assert.IsTrue(attribute.IsValid(" ")); | ||
| Assert.IsTrue(attribute.IsValid(null)); | ||
| Assert.IsTrue(attribute.IsValid(string.Empty)); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| using System; | ||
| using System.ComponentModel.DataAnnotations; | ||
| using System.Text.RegularExpressions; | ||
| using System.Web; | ||
|
|
||
| namespace DataAnnotationsExtensions.ServerSideValidators | ||
| { | ||
| /// <summary> | ||
| /// RequiredHttpAttribute class. Identical behavior to the RequiredAttribute class | ||
| /// with the additon that it allows for bypassing validation based on the Http | ||
| /// method of the current Http request. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// This class will have identical behavior to the RequiredAttribute class in the scenario | ||
| /// where the System.Web.HttpContext.Current property returns null. | ||
| /// </remarks> | ||
| [AttributeUsageAttribute(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)] | ||
| public sealed class RequiredHttpAttribute : System.ComponentModel.DataAnnotations.RequiredAttribute | ||
| { | ||
| /// <summary> | ||
| /// Gets or sets the HTTP methods that this attribute will validate on. | ||
| /// </summary> | ||
| /// <remarks>The value is treated as a regular expression pattern, e.g., GET|POST.</remarks> | ||
| public string HttpMethod { get; set; } | ||
|
|
||
| /// <summary> | ||
| /// Validates the specified value. | ||
| /// </summary> | ||
| /// <param name="value">The value to validate.</param> | ||
| /// <returns>True if the value is valid and false otherwise.</returns> | ||
| public override bool IsValid(object value) | ||
| { | ||
| var required = this.RequiredInContext(HttpContext.Current); | ||
| return required ? base.IsValid(value) : true; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Validates the specified value with respect to the current validation attribute. | ||
| /// </summary> | ||
| /// <param name="value">The value to validate.</param> | ||
| /// <param name="validationContext">The context information about the validation operation.</param> | ||
| /// <returns>An instance of the ValidationResult class.</returns> | ||
| protected override ValidationResult IsValid(object value, ValidationContext validationContext) | ||
| { | ||
| var required = this.RequiredInContext(HttpContext.Current); | ||
| return required ? base.IsValid(value, validationContext) : ValidationResult.Success; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Determines if the provided HTTP context permits validation. | ||
| /// </summary> | ||
| /// <param name="context">The HTTP context.</param> | ||
| /// <returns>True if validation is required and false otherwise.</returns> | ||
| protected bool RequiredInContext(HttpContext context) | ||
| { | ||
| if (context != null && !string.IsNullOrWhiteSpace(this.HttpMethod)) | ||
| { | ||
| if (!Regex.IsMatch(context.Request.HttpMethod, this.HttpMethod, RegexOptions.IgnoreCase)) | ||
| { | ||
| return false; | ||
| } | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
| } | ||
| } |
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