File: ValidationHelperTest.cs

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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.

using System.Collections.Generic;
using System.Web.WebPages.Html;
using Xunit;

namespace System.Web.WebPages.Test
{
    public class ValidationHelperTest
    {
        [Fact]
        public void ValidationMessageAllowsEmptyModelName()
        {
            // Arrange
            ModelStateDictionary dictionary = new ModelStateDictionary();
            dictionary.AddError("test", "some error text");
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(dictionary);

            // Act 
            var html = htmlHelper.ValidationMessage("test");

            // Assert
            Assert.Equal(@"<span class=""field-validation-error"" data-valmsg-for=""test"" data-valmsg-replace=""true"">some error text</span>", html.ToHtmlString());
        }

        [Fact]
        public void ValidationMessageReturnsFirstError()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act 
            var html = htmlHelper.ValidationMessage("foo");

            // Assert
            Assert.Equal(@"<span class=""field-validation-error"" data-valmsg-for=""foo"" data-valmsg-replace=""true"">foo error &lt;1&gt;</span>", html.ToHtmlString());
        }

        [Fact]
        public void ValidationMessageUsesValidCssClassIfFieldDoesNotHaveErrors()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationMessage("baz");

            // Assert
            Assert.Equal(@"<span class=""field-validation-valid"" data-valmsg-for=""baz"" data-valmsg-replace=""true""></span>", html.ToString());
        }

        [Fact]
        public void ValidationMessageReturnsWithObjectAttributes()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationMessage("foo", new { attr = "attr-value" });

            // Assert
            Assert.Equal(@"<span attr=""attr-value"" class=""field-validation-error"" data-valmsg-for=""foo"" data-valmsg-replace=""true"">foo error &lt;1&gt;</span>",
                         html.ToHtmlString());
        }

        [Fact]
        public void ValidationMessageReturnsWithCustomMessage()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Atc
            var html = htmlHelper.ValidationMessage("foo", "bar error");

            // Assert
            Assert.Equal(@"<span class=""field-validation-error"" data-valmsg-for=""foo"" data-valmsg-replace=""false"">bar error</span>", html.ToHtmlString());
        }

        [Fact]
        public void ValidationMessageReturnsWithCustomMessageAndObjectAttributes()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationMessage("foo", "bar error", new { baz = "baz" });

            // Assert
            Assert.Equal(@"<span baz=""baz"" class=""field-validation-error"" data-valmsg-for=""foo"" data-valmsg-replace=""false"">bar error</span>", html.ToHtmlString());
        }

        [Fact]
        public void ValidationMessageWithModelStateAndNoErrors()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationMessage("baz");

            // Assert
            Assert.Equal(@"<span class=""field-validation-valid"" data-valmsg-for=""baz"" data-valmsg-replace=""true""></span>", html.ToString());
        }

        [Fact]
        public void ValidationSummary()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary();

            // Assert
            Assert.Equal(@"<div class=""validation-summary-errors"" data-valmsg-summary=""true""><ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithMessage()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary("test message");

            // Assert
            Assert.Equal(@"<div class=""validation-summary-errors"" data-valmsg-summary=""true""><span>test message</span>
<ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithFormErrors()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithFormErrors());

            // Act
            var html = htmlHelper.ValidationSummary();

            // Assert
            Assert.Equal(@"<div class=""validation-summary-errors"" data-valmsg-summary=""true""><ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
<li>some form error &lt;1&gt;</li>
<li>some form error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithFormErrorsAndExcludeFieldErrors()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithFormErrors());

            // Act
            var html = htmlHelper.ValidationSummary(excludeFieldErrors: true);

            // Assert
            Assert.Equal(@"<div class=""validation-summary-errors""><ul>
<li>some form error &lt;1&gt;</li>
<li>some form error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithObjectProperties()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary(new { attr = "attr-value", @class = "my-class" });

            // Assert
            Assert.Equal(@"<div attr=""attr-value"" class=""validation-summary-errors my-class"" data-valmsg-summary=""true""><ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithDictionary()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary(new Dictionary<string, object> { { "attr", "attr-value" }, { "class", "my-class" } });

            // Assert
            Assert.Equal(@"<div attr=""attr-value"" class=""validation-summary-errors my-class"" data-valmsg-summary=""true""><ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithDictionaryAndMessage()
        {
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary("This is a message.", new Dictionary<string, object> { { "attr", "attr-value" }, { "class", "my-class" } });

            // Assert
            Assert.Equal(@"<div attr=""attr-value"" class=""validation-summary-errors my-class"" data-valmsg-summary=""true""><span>This is a message.</span>
<ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        //[Fact]
        // Cant test this, as it sets a static property 
        public void ValidationSummaryWithCustomValidationSummaryClass()
        {
            // Arrange
            HtmlHelper.ValidationSummaryClass = "my-val-class";
            HtmlHelper htmlHelper = HtmlHelperFactory.Create(GetModelStateWithErrors());

            // Act
            var html = htmlHelper.ValidationSummary("This is a message.", new Dictionary<string, object> { { "attr", "attr-value" }, { "class", "my-class" } });

            // Assert
            Assert.Equal(@"<div attr=""attr-value"" class=""my-val-class my-class""><span>This is a message.</span>
<ul>
<li>foo error &lt;1&gt;</li>
<li>foo error &lt;2&gt;</li>
<li>bar error &lt;1&gt;</li>
<li>bar error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        [Fact]
        public void ValidationSummaryWithNoErrorReturnsNullIfExcludeFieldErrorsIsSetToFalse()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create();

            // Act
            var html = htmlHelper.ValidationSummary(excludeFieldErrors: false);

            // Assert
            Assert.Equal(@"<div class=""validation-summary-valid"" data-valmsg-summary=""true""><ul>
</ul></div>", html.ToString());
        }

        [Fact]
        public void ValidationSummaryWithNoErrorReturnsNull()
        {
            // Arrange
            HtmlHelper htmlHelper = HtmlHelperFactory.Create();

            // Act
            var html = htmlHelper.ValidationSummary(excludeFieldErrors: true);

            // Assert
            Assert.Null(html);
        }

        [Fact]
        public void ValidationSummaryWithNoFormErrorsAndExcludedFieldErrorsReturnsNull()
        {
            // Arrange
            ModelStateDictionary modelState = new ModelStateDictionary();
            modelState.AddError("foo", "error");
            modelState.AddError("bar", "error");

            HtmlHelper htmlHelper = HtmlHelperFactory.Create(modelState);

            // Act
            var html = htmlHelper.ValidationSummary(excludeFieldErrors: true);

            // Assert
            Assert.Null(html);
        }

        [Fact]
        public void ValidationSummaryWithMultipleFormErrorsAndExcludedFieldErrors()
        {
            // Arrange
            ModelStateDictionary modelState = new ModelStateDictionary();
            modelState.AddFormError("error <1>");
            modelState.AddFormError("error <2>");

            HtmlHelper htmlHelper = HtmlHelperFactory.Create(modelState);

            // Act
            var html = htmlHelper.ValidationSummary(excludeFieldErrors: true);

            // Assert
            Assert.Equal(@"<div class=""validation-summary-errors""><ul>
<li>error &lt;1&gt;</li>
<li>error &lt;2&gt;</li>
</ul></div>"
                         , html.ToHtmlString());
        }

        private static ModelStateDictionary GetModelStateWithErrors()
        {
            ModelStateDictionary modelState = new ModelStateDictionary();
            modelState.AddError("foo", "foo error <1>");
            modelState.AddError("foo", "foo error <2>");
            modelState.AddError("bar", "bar error <1>");
            modelState.AddError("bar", "bar error <2>");
            return modelState;
        }

        private static ModelStateDictionary GetModelStateWithFormErrors()
        {
            ModelStateDictionary modelState = GetModelStateWithErrors();
            modelState.AddFormError("some form error <1>");
            modelState.AddFormError("some form error <2>");
            return modelState;
        }
    }
}