File: StringLengthAttributeAdapterTest.cs
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Project: src\src\Mvc\Mvc.DataAnnotations\test\Microsoft.AspNetCore.Mvc.DataAnnotations.Test.csproj (Microsoft.AspNetCore.Mvc.DataAnnotations.Test)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
using Microsoft.AspNetCore.InternalTesting;
using Microsoft.Extensions.Localization;
using Moq;
 
namespace Microsoft.AspNetCore.Mvc.DataAnnotations;
 
public class StringLengthAttributeAdapterTest
{
    [Fact]
    [ReplaceCulture]
    public void AddValidation_WithMaxLengthAndMinLength_AddsAttributes_Localize()
    {
        // Arrange
        var provider = TestModelMetadataProvider.CreateDefaultProvider();
        var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
 
        var attribute = new StringLengthAttribute(8);
        attribute.ErrorMessage = "Property must not be longer than '{1}' characters and not shorter than '{2}' characters.";
 
        var expectedMessage = "Property must not be longer than '8' characters and not shorter than '0' characters.";
 
        var stringLocalizer = new Mock<IStringLocalizer>();
        var expectedProperties = new object[] { "Length", 8, 0 };
 
        stringLocalizer.Setup(s => s[attribute.ErrorMessage, expectedProperties])
            .Returns(new LocalizedString(attribute.ErrorMessage, expectedMessage));
 
        var adapter = new StringLengthAttributeAdapter(attribute, stringLocalizer: stringLocalizer.Object);
 
        var actionContext = new ActionContext();
        var context = new ClientModelValidationContext(actionContext, metadata, provider, new Dictionary<string, string>());
 
        // Act
        adapter.AddValidation(context);
 
        // Assert
        Assert.Collection(
            context.Attributes,
            kvp => { Assert.Equal("data-val", kvp.Key); Assert.Equal("true", kvp.Value); },
            kvp => { Assert.Equal("data-val-length", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); },
            kvp => { Assert.Equal("data-val-length-max", kvp.Key); Assert.Equal("8", kvp.Value); });
    }
 
    [Fact]
    [ReplaceCulture]
    public void AddValidation_WithMaxLength_AddsAttributes()
    {
        // Arrange
        var provider = TestModelMetadataProvider.CreateDefaultProvider();
        var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
 
        var attribute = new StringLengthAttribute(8);
        var adapter = new StringLengthAttributeAdapter(attribute, stringLocalizer: null);
 
        var expectedMessage = attribute.FormatErrorMessage("Length");
 
        var actionContext = new ActionContext();
        var context = new ClientModelValidationContext(actionContext, metadata, provider, new Dictionary<string, string>());
 
        // Act
        adapter.AddValidation(context);
 
        // Assert
        Assert.Collection(
            context.Attributes,
            kvp => { Assert.Equal("data-val", kvp.Key); Assert.Equal("true", kvp.Value); },
            kvp => { Assert.Equal("data-val-length", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); },
            kvp => { Assert.Equal("data-val-length-max", kvp.Key); Assert.Equal("8", kvp.Value); });
    }
 
    [Fact]
    [ReplaceCulture]
    public void AddValidation_WithMinAndMaxLength_AddsAttributes()
    {
        // Arrange
        var provider = TestModelMetadataProvider.CreateDefaultProvider();
        var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
 
        var attribute = new StringLengthAttribute(10) { MinimumLength = 3 };
        var adapter = new StringLengthAttributeAdapter(attribute, stringLocalizer: null);
 
        var expectedMessage = attribute.FormatErrorMessage("Length");
 
        var actionContext = new ActionContext();
        var context = new ClientModelValidationContext(actionContext, metadata, provider, new Dictionary<string, string>());
 
        // Act
        adapter.AddValidation(context);
 
        // Assert
        Assert.Collection(
            context.Attributes,
            kvp => { Assert.Equal("data-val", kvp.Key); Assert.Equal("true", kvp.Value); },
            kvp => { Assert.Equal("data-val-length", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); },
            kvp => { Assert.Equal("data-val-length-max", kvp.Key); Assert.Equal("10", kvp.Value); },
            kvp => { Assert.Equal("data-val-length-min", kvp.Key); Assert.Equal("3", kvp.Value); });
    }
 
    [Fact]
    [ReplaceCulture]
    public void AddValidation_WithMaxLength_AtIntMaxValue_AddsAttributes()
    {
        // Arrange
        var provider = TestModelMetadataProvider.CreateDefaultProvider();
        var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
 
        var attribute = new StringLengthAttribute(int.MaxValue);
        var adapter = new StringLengthAttributeAdapter(attribute, stringLocalizer: null);
 
        var expectedMessage = attribute.FormatErrorMessage("Length");
 
        var actionContext = new ActionContext();
        var context = new ClientModelValidationContext(actionContext, metadata, provider, new Dictionary<string, string>());
 
        // Act
        adapter.AddValidation(context);
 
        // Assert
        Assert.Collection(
            context.Attributes,
            kvp => { Assert.Equal("data-val", kvp.Key); Assert.Equal("true", kvp.Value); },
            kvp => { Assert.Equal("data-val-length", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); });
    }
 
    [Fact]
    [ReplaceCulture]
    public void AddValidation_DoesNotTrounceExistingAttributes()
    {
        // Arrange
        var provider = TestModelMetadataProvider.CreateDefaultProvider();
        var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
 
        var attribute = new StringLengthAttribute(10) { MinimumLength = 3 };
        var adapter = new StringLengthAttributeAdapter(attribute, stringLocalizer: null);
 
        var expectedMessage = attribute.FormatErrorMessage("Length");
 
        var actionContext = new ActionContext();
        var context = new ClientModelValidationContext(actionContext, metadata, provider, new Dictionary<string, string>());
 
        context.Attributes.Add("data-val", "original");
        context.Attributes.Add("data-val-length", "original");
        context.Attributes.Add("data-val-length-max", "original");
        context.Attributes.Add("data-val-length-min", "original");
 
        // Act
        adapter.AddValidation(context);
 
        // Assert
        Assert.Collection(
            context.Attributes,
            kvp => { Assert.Equal("data-val", kvp.Key); Assert.Equal("original", kvp.Value); },
            kvp => { Assert.Equal("data-val-length", kvp.Key); Assert.Equal("original", kvp.Value); },
            kvp => { Assert.Equal("data-val-length-max", kvp.Key); Assert.Equal("original", kvp.Value); },
            kvp => { Assert.Equal("data-val-length-min", kvp.Key); Assert.Equal("original", kvp.Value); });
    }
}