public void GetClientValidationRules_ReturnsValidationParameters()
{
// Arrange
var expected = ValidationAttributeUtil.GetRequiredErrorMessage("Length");
var provider = TestModelMetadataProvider.CreateDefaultProvider();
var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
var attribute = new RequiredAttribute();
var adapter = new RequiredAttributeAdapter(attribute);
var serviceCollection = new ServiceCollection();
var requestServices = serviceCollection.BuildServiceProvider();
var context = new ClientModelValidationContext(metadata, provider, requestServices);
// Act
var rules = adapter.GetClientValidationRules(context);
// Assert
var rule = Assert.Single(rules);
Assert.Equal("required", rule.ValidationType);
Assert.Empty(rule.ValidationParameters);
Assert.Equal(expected, rule.ErrorMessage);
}