Struct ExpectedErrorMessageBuilder 

pub struct ExpectedErrorMessageBuilder<'a> { /* private fields */ }

Available on crate feature test-util only.

Builder struct for ExpectedErrorMessage

Implementations

impl<'a> ExpectedErrorMessageBuilder<'a>

pub fn error(msg: &'a str) -> Self

Create a builder expecting the given main error message (contents of Display)

pub fn error_starts_with(msg: &'a str) -> Self

Create a builder expecting the main error message (contents of Display) to start with the given text.

(If you later add expected help text to this builder, that will also be an expected prefix, not the entire expected help text.)

pub fn help(self, msg: &'a str) -> Self

Add expected contents of help(), or expected prefix of help() if this builder was originally constructed with error_starts_with()

pub fn exactly_one_underline(self, snippet: &'a str) -> Self

Add expected underlined text. The error message will be expected to have exactly one miette label, and the underlined portion should be snippet. The underlined text should have no associated label text.

pub fn exactly_one_underline_with_label( self, snippet: &'a str, label: &'a str, ) -> Self

Add expected underlined text. The error message will be expected to have exactly one miette label, and the underlined portion should be snippet. The label text is expected to match label.

pub fn exactly_two_underlines( self, snippet1: &'a str, snippet2: &'a str, ) -> Self

Add expected underlined text. The error message will be expected to have exactly two miette labels, and the underlined portions should be snippet1 and snippet2, in that order. Both labels should have no associated label text.

pub fn with_underlines_or_labels( self, labels: impl IntoIterator<Item = (&'a str, Option<&'a str>)>, ) -> Self

Add expected underlined text. The error message will be expected to have exactly this many miette labels, and for each label (a, b), the underlined portion should be a and the label text should be b (or None for no label text).

pub fn source(self, msg: &'a str) -> Self

Add expected contents of source(), or expected prefix of source() if this builder was originally constructed with error_starts_with()

pub fn build(self) -> ExpectedErrorMessage<'a>

Build the ExpectedErrorMessage

Trait Implementations

impl<'a> Debug for ExpectedErrorMessageBuilder<'a>

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

Formats the value using the given formatter.