// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Moq;
 
namespace Microsoft.AspNetCore.Mvc.ModelBinding.Validation;
 
public class CompositeModelValidatorProviderTest
{
    [Fact]
    public void GetModelValidators_ReturnsValidatorsFromAllProviders()
    {
        // Arrange
        var validatorMetadata = new object();
        var validator1 = new ValidatorItem(validatorMetadata);
        var validator2 = new ValidatorItem(validatorMetadata);
        var validator3 = new ValidatorItem(validatorMetadata);
 
        var provider1 = new Mock<IModelValidatorProvider>();
        provider1.Setup(p => p.CreateValidators(It.IsAny<ModelValidatorProviderContext>()))
                 .Callback<ModelValidatorProviderContext>(c =>
                 {
                     c.Results.Add(validator1);
                     c.Results.Add(validator2);
                 });
 
        var provider2 = new Mock<IModelValidatorProvider>();
        provider2.Setup(p => p.CreateValidators(It.IsAny<ModelValidatorProviderContext>()))
                 .Callback<ModelValidatorProviderContext>(c =>
                 {
                     c.Results.Add(validator3);
                 });
 
        var compositeModelValidator = new CompositeModelValidatorProvider(new[] { provider1.Object, provider2.Object });
        var modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(typeof(string));
 
        // Act
        var validatorProviderContext = new ModelValidatorProviderContext(modelMetadata, new List<ValidatorItem>());
        compositeModelValidator.CreateValidators(validatorProviderContext);
 
        // Assert
        Assert.Equal(
            new[] { validator1, validator2, validator3 },
            validatorProviderContext.Results.ToArray());
    }
}