Enum Pattern 

pub enum Pattern {
    Literal(Cow<'static, str>),
    Regex(Regex),
}

Represents a pattern for matching text abstractly for use in asserting contents of complex diagnostics

Variants

Literal(Cow<'static, str>)

Searches for an exact match of the given literal in the input string

Regex(Regex)

Searches for a match of the given regular expression in the input string

Implementations

impl Pattern

pub fn regex(pattern: impl AsRef<str>) -> Self

Construct a Pattern representing the given regular expression

pub fn is_match(&self, input: impl AsRef<str>) -> bool

Check if this pattern matches input

pub fn assert_match(&self, input: impl AsRef<str>)

Assert that this pattern matches input.

This behaves like assert_eq! or assert_matches!, i.e. it will produce a helpful panic message on failure that renders the difference between what the pattern expected, and what it actually was matched against.

pub fn assert_match_with_context( &self, input: impl AsRef<str>, context: impl AsRef<str>, )

Like Pattern::assert_match, but renders additional context in the case of failure to aid in troubleshooting.

Trait Implementations

impl Debug for Pattern

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

Formats the value using the given formatter.

impl Display for Pattern

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

Formats the value using the given formatter.

impl From<&'static str> for Pattern

fn from(s: &'static str) -> Self

Converts to this type from the input type.

impl From<Regex> for Pattern

fn from(pat: Regex) -> Self

Converts to this type from the input type.

impl From<String> for Pattern

fn from(s: String) -> Self

Converts to this type from the input type.