Struct SpecificityScore 

pub struct SpecificityScore {
    pub literal_chars: usize,
    pub placeholder_count: usize,
    pub typed_placeholder_count: usize,
}

Specificity score for a step pattern.

Used to rank patterns when multiple match the same step text. Higher scores indicate more specific patterns that should take precedence.

Ordering

Patterns are compared by:

1. More literal characters → more specific
2. Fewer placeholders → more specific
3. More typed placeholders → more specific (tiebreaker)

Examples

use rstest_bdd_patterns::SpecificityScore;

let specific = SpecificityScore::calculate("the output is foo")
    .expect("valid specific pattern");
let generic = SpecificityScore::calculate("the output is {value}")
    .expect("valid generic pattern");
assert!(specific > generic);

Fields

literal_chars: usize

Total number of literal characters in the pattern.

placeholder_count: usize

Number of placeholder tokens in the pattern.

typed_placeholder_count: usize

Number of placeholders with type hints (e.g., {n:u32}).

Implementations

impl SpecificityScore

pub fn calculate(pattern: &str) -> Result<Self, PatternError>

Calculate the specificity score for a pattern string.

Errors

Returns PatternError if the pattern contains invalid syntax.

Examples

use rstest_bdd_patterns::SpecificityScore;

let score = SpecificityScore::calculate("I have {count:u32} apples")
    .expect("valid pattern");
assert_eq!(score.literal_chars, 14); // "I have " + " apples"
assert_eq!(score.placeholder_count, 1);
assert_eq!(score.typed_placeholder_count, 1);

Trait Implementations

impl Clone for SpecificityScore

fn clone(&self) -> SpecificityScore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpecificityScore

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

Formats the value using the given formatter.

impl Default for SpecificityScore

fn default() -> SpecificityScore

Returns the “default value” for a type.

impl Ord for SpecificityScore

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SpecificityScore

fn eq(&self, other: &SpecificityScore) -> 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 PartialOrd for SpecificityScore

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for SpecificityScore

impl Eq for SpecificityScore

impl StructuralPartialEq for SpecificityScore