Compare executes the specified comparison to the target value for an attribute.

CompareAttrValues attempts to execute a comparison between the provided attribute value and the targeted value.

CompareTest executes a registered comparison function against the target attribute's value.

DefaultComparisonFuncs returns the complete list of default comparison functions.

EnvVarValued returns a validator that asserts a given attribute's value is the name of an environment variable that is valued at runtime.

FileIsReadable returns a validator that asserts a given attribute's value is a local file that is readable.

GetComparisonFunc attempts to return a previously registered comparison function for a specified op : type combination.

IsDurationString returns a validator that asserts a given attribute's value is a valid time.Duration string.

IsURL returns a validator that asserts a given attribute value is parseable as a URL.

Length asserts an attribute's length is limited to the specified bounds.

LengthTest is an AttributeValidator implementation that attempts to find a length value appropriate for the attribute value type, asserting that it is within the specified bounds.

MutuallyExclusiveSibling returns a validator that ensures that an attribute only carries a value when another sibling attribute does not.

MutuallyExclusiveSiblingTest ensures that a given attribute is not valued when another one is, and vice versa.

MutuallyInclusiveSiblingTest ensures that a given attribute is valued when a sibling attribute is also valued.

NewValidator returns a type implementing the validator interface with your specific construction.

RegexpMatch returns a validator that asserts an attribute's value matches the provided expression.

RegexpMatchTest is an AttributeValidator implementation that will first attempt to convert the value of a field to a string, then see if that resulting string matches the provided expression.

RegexpNotMatch returns a validator that asserts an attribute's value does not match the provided expression.

RegexpNotMatchTest is an AttributeValidator implementation that will first attempt to convert the value of a field to a string, then see if that resulting string matches the provided expression.

Required returns a validator that asserts a field is configured with any value at all.

RequiredTest is an AttributeValidator implementation that will register an error if the attribute has no value of any kind.

SetComparisonFunc sets a comparison function to use for comparing attribute values to values of the specified type.

TestEnvVarValued asserts that a given attribute value is the name of an environment variable that is valued at runtime.

TestFileIsReadable attempts to open and subsequently read a single byte from the file at the path specified by the attribute value.

TestIsDurationString asserts that a given attribute's value is a valid time.Duration string.

TestIsURL asserts that the provided value can be parsed by url.Parse().

AttributeValidatorConfig describes the configuration of a custom AttributeValidator.

ComparisonFunc executes a specific comparison of an attribute value to the targeted value.