Function parse_test_config

crates/test-util/src/wast.rs:229–243

Parse test configuration from the specified test, comments starting with `;;!`.

(wat: &str, comment: &'static str)

/// Parse test configuration from the specified test, comments starting with
/// `;;!`.
pub fn parse_test_config<T>(wat: &str, comment: &'static str) -> Result<T>
where
    T: DeserializeOwned,
{
    // The test config source is the leading lines of the WAT file that are
    // prefixed with `;;!`.
    let config_lines: Vec<_> = wat
        .lines()
        .take_while(|l| l.starts_with(comment))
        .map(|l| &l[comment.len()..])
        .collect();
    let config_text = config_lines.join("\n");

    toml::from_str(&config_text).context("failed to parse the test configuration")
}

/// A `*.wast` test with its path, contents, and configuration.
#[derive(Clone)]