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); });
        }
        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); });
        }