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: main.rs
    path of file: ./repos/perseus/examples/core/rx_state/tests
    
    the code of the file until where you have to start completion: use fantoccini::{Client, Locator};
use perseus::wait_for_checkpoint;

#[perseus::test]
async fn main(c: &mut Client) -> Result<(), fantoccini::error::CmdError> {
    c.goto("http://localhost:8080").await?;
    wait_for_checkpoint!("begin", 0, c);
    let url = c.current_url().await?;
    assert!(url.as_ref().starts_with("http://localhost:8080"));
    wait_for_checkpoint!("page_interactive", 0, c);

    // The initial greeting should be to an empty string
    let mut greeting = c.find(Locator::Css("p")).await?;
    assert_eq!(greeting.text().await?, "Greetings, !");
    // Now type some text in,
    
async fn main(c: &mut Client) -> Result<(), fantoccini::error::CmdError> {
    c.goto("http://localhost:8080").await?;
    wait_for_checkpoint!("begin", 0, c);
    let url = c.current_url().await?;
    assert!(url.as_ref().starts_with("http://localhost:8080"));
    wait_for_checkpoint!("page_interactive", 0, c);

    // The initial greeting should be to an empty string
    let mut greeting = c.find(Locator::Css("p")).await?;
    assert_eq!(greeting.text().await?, "Greetings, !");
    // Now type some text in, and it should be reactively reflected straight away
    c.find(Locator::Css("input"))
        .await?
        .send_keys("Test User")
        .await?;
    assert_eq!(greeting.text().await?, "Greetings, Test User!");

    // Go to the about page and make sure the changed greeting is reflected once we
    // go back This tests that pages can access each others' states
    c.find(Locator::Id("about-link")).await?.click().await?;
    let url = c.current_url().await?;
    assert!(url.as_ref().starts_with("http://localhost:8080/about"));
    wait_for_checkpoint!("page_interactive", 1, c);
    c.find(Locator::Id("index-link")).await?.click().await?;
    let url = c.current_url().await?;
    assert!(url.as_ref().starts_with("http://localhost:8080"));
    wait_for_checkpoint!("page_interactive", 1, c);

    let greeting = c.find(Locator::Css("p")).await?.text().await?;
    assert_eq!(greeting, "Greetings, Test User!");

    Ok(())
}