Enum TestOutputErrorSlice

pub enum TestOutputErrorSlice<'a> {
    PanicMessage {
        stderr_subslice: ByteSubslice<'a>,
    },
    ErrorStr {
        stderr_subslice: ByteSubslice<'a>,
    },
    ShouldPanic {
        stdout_subslice: ByteSubslice<'a>,
    },
}

A part of a test output that identifies the most relevant location of a test failure.

The process of extracting errors is heuristic and may not always be accurate.

Variants

PanicMessage

A panic message was found in the output.

The output is borrowed from standard error.

Fields

stderr_subslice: ByteSubslice<'a>

The subslice of standard error that contains the stack trace.

ErrorStr

An error string was found in the output.

The output is borrowed from standard error.

Fields

stderr_subslice: ByteSubslice<'a>

The subslice of standard error that contains the stack trace.

ShouldPanic

A should-panic test did not panic.

The output is borrowed from standard output.

Fields

stdout_subslice: ByteSubslice<'a>

The subslice of standard output that contains the should-panic message.

Implementations

impl<'a> TestOutputErrorSlice<'a>

pub fn heuristic_extract( stdout: Option<&'a [u8]>, stderr: Option<&'a [u8]>, ) -> Option<Self>

Attempts to heuristically extract a description of the test failure from the output of the test.

None indicates that output wasn’t captured – in those cases there isn’t much we can do.

pub fn stderr_subslice(&self) -> Option<ByteSubslice<'a>>

Returns the subslice of standard error that contains the description.

pub fn stdout_subslice(&self) -> Option<ByteSubslice<'a>>

Returns the subslice of standard output that contains the description.

pub fn combined_subslice(&self) -> Option<ByteSubslice<'a>>

Returns the subslice of combined output (either stdout or stderr) that contains the description.

Trait Implementations

impl<'a> Clone for TestOutputErrorSlice<'a>

fn clone(&self) -> TestOutputErrorSlice<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for TestOutputErrorSlice<'a>

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

Formats the value using the given formatter.

impl Display for TestOutputErrorSlice<'_>

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

Formats the value using the given formatter.

impl<'a> Error for TestOutputErrorSlice<'a>

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl<'a> Copy for TestOutputErrorSlice<'a>