Enum InvariantKind 

pub enum InvariantKind {
    Type,
    NonNull,
    NonNegative,
    Positive,
    Range,
    Relation,
    Length,
}

Types of invariants that can be inferred from test traces.

Based on Daikon-style invariant templates.

Serialization

Serializes to snake_case: "type", "non_null", "non_negative", etc.

Variants

Type

Type invariant (e.g., “x: int”)

NonNull

Non-null invariant (no None values observed)

NonNegative

Non-negative numeric (all values >= 0)

Positive

Positive numeric (all values > 0)

Range

Range constraint (min <= x <= max)

Relation

Ordering relation between parameters (e.g., start < end)

Length

Length constraint (e.g., len(x) > 0)

Trait Implementations

impl Clone for InvariantKind

fn clone(&self) -> InvariantKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for InvariantKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for InvariantKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for InvariantKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for InvariantKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for InvariantKind

fn eq(&self, other: &InvariantKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for InvariantKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for InvariantKind

impl Eq for InvariantKind

impl StructuralPartialEq for InvariantKind