Struct StreamingSink 

pub struct StreamingSink<W1, W2> {
    pub stdout: W1,
    pub stderr: W2,
}

A TestOutputSink that streams bytes to the supplied stdout/stderr writers. Each non-empty write prepends a header so the user can tell which executable is speaking.

Fields

stdout: W1

Writer for captured stdout (typically the parent process’s stdout).

stderr: W2

Writer for captured stderr (typically the parent process’s stderr).

Trait Implementations

impl<W1: Write, W2: Write> TestOutputSink for StreamingSink<W1, W2>

fn write_stdout( &mut self, executable: &TestExecutable, bytes: &[u8], ) -> Result<()>

Called zero or more times per executable with stdout bytes.

fn write_stderr( &mut self, executable: &TestExecutable, bytes: &[u8], ) -> Result<()>

Called zero or more times per executable with stderr bytes.

fn test_finished(&mut self, result: &TestRunResult) -> Result<()>

Called exactly once per executable, immediately after it exits and before the next executable starts. Streaming sinks render the per-test result line here so multi-test runs report progress the way cargo test does. The default implementation does nothing.