You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tests.rs
    path of file: ./repos/vector/src/config/unit_test
    
    the code of the file until where you have to start completion: use indoc::indoc;

use super::*;
use crate::config::ConfigBuilder;

#[tokio::test]
async fn parse_no_input() {
    let config: ConfigBuilder = toml::from_str(indoc! {r#"
        [transforms.bar
    
async fn parse_no_outputs() {
    let config: ConfigBuilder = toml::from_str(indoc! {r#"
        [transforms.foo]
          inputs = ["ignored"]
          type = "remap"
          source = '''
          .my_string_field = "string value"
          '''

          [[tests]]
            name = "broken test"

          [tests.input]
            insert_at = "foo"
            value = "nah this doesnt matter"
    "#})
    .unwrap();

    let errs = build_unit_tests(config).await.err().unwrap();
    assert_eq!(
        errs,
        vec![indoc! {r#"
            Failed to build test 'broken test':
              unit test must contain at least one of `outputs` or `no_outputs_from`."#}
        .to_owned(),]
    );
}