public void MinLengthAttribute_AddValidation_AttributeAndCustomMessage()
{
// Arrange
var propertyName = "Length";
var provider = TestModelMetadataProvider.CreateDefaultProvider();
var metadata = provider.GetMetadataForProperty(typeof(string), propertyName);
var attribute = new MinLengthAttribute(2)
{
ErrorMessage = "Array must have at least {1} items."
};
var adapter = new MinLengthAttributeAdapter(attribute, stringLocalizer: null);
var expectedMessage = "Array must have at least 2 items.";
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-minlength", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); },
kvp => { Assert.Equal("data-val-minlength-min", kvp.Key); Assert.Equal("2", kvp.Value); });
}
public void MinLengthAttribute_AddValidation_Localize()
{
// Arrange
var provider = TestModelMetadataProvider.CreateDefaultProvider();
var metadata = provider.GetMetadataForProperty(typeof(string), "Length");
var attribute = new MinLengthAttribute(6);
attribute.ErrorMessage = "Property must be at least '{1}' characters long.";
var expectedProperties = new object[] { "Length", 6 };
var expectedMessage = "Property must be at least '6' characters long.";
var stringLocalizer = new Mock <IStringLocalizer>();
stringLocalizer.Setup(s => s[attribute.ErrorMessage, expectedProperties])
.Returns(new LocalizedString(attribute.ErrorMessage, expectedMessage));
var adapter = new MinLengthAttributeAdapter(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-minlength", kvp.Key); Assert.Equal(expectedMessage, kvp.Value); },
kvp => { Assert.Equal("data-val-minlength-min", kvp.Key); Assert.Equal("6", kvp.Value); });
}