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: config_include.rs
    path of file: ./repos/cargo/tests/testsuite
    
    the code of the file until where you have to start completion: //! Tests for `include` config field.

use super::config::{assert_error, write_config_at, write_config_toml, GlobalContextBuilder};
use cargo_test_support::{no_such_file_err_msg, project};

#[cargo_test]
fn gated() {
    // Requires -Z flag.
    write_config_toml("include='other.toml'");
    write_config_at(
        ".cargo/other.toml",
        "
        othervalue = 1
        ",
    );
    let gctx = GlobalContextBuilder::new().build();
    assert_eq!(gctx.get::<Option<i32>>("othervalue
    
fn cli_include_failed() {
    // Error message when CLI include fails to load.
    let gctx = GlobalContextBuilder::new()
        .unstable_flag("config-include")
        .config_arg("include='foobar.toml'")
        .build_err();
    assert_error(
        gctx.unwrap_err(),
        &format!(
            "\
failed to load --config include

Caused by:
  failed to load config include `foobar.toml` from `--config cli option`

Caused by:
  failed to read configuration file `[..]/foobar.toml`

Caused by:
  {}",
            no_such_file_err_msg()
        ),
    );
}