dylib_test.rs

use anyhow::Result;
use javy_runner::{Plugin, Runner, RunnerError};
use std::str;

#[test]
fn test_dylib_with_no_fn_name() -> Result<()> {
    let js_src = "console.error(42);";
    let mut runner = Runner::with_dylib(plugin_module()?)?;

    let (_, logs, _) = runner.exec_through_dylib(js_src, None)?;
    assert_eq!("42\n", str::from_utf8(&logs)?);

    Ok(())
}

#[test]
fn test_dylib_with_error() -> Result<()> {
    let js_src = "function foo() { throw new Error('foo error'); } foo();";

    let mut runner = Runner::with_dylib(plugin_module()?)?;

    let res = runner.exec_through_dylib(js_src, None);

    assert!(res.is_err());

    let e = res.err().unwrap();
    let expected_log_output = "Error:1:24 foo error\n    at foo (function.mjs:1:24)\n    at <anonymous> (function.mjs:1:50)\n\n";
    assert_eq!(
        expected_log_output,
        e.downcast_ref::<RunnerError>().unwrap().stderr
    );

    Ok(())
}

#[test]
fn test_dylib_with_exported_func() -> Result<()> {
    let js_src = "export function foo() { console.error('In foo'); }; console.error('Toplevel');";

    let mut runner = Runner::with_dylib(plugin_module()?)?;

    let (_, logs, _) = runner.exec_through_dylib(js_src, Some("foo"))?;
    assert_eq!("Toplevel\nIn foo\n", str::from_utf8(&logs)?);

    Ok(())
}

fn plugin_module() -> Result<Vec<u8>> {
    std::fs::read(Plugin::Default.path()).map_err(Into::into)
}