#[cfg(test)]
mod test {
    use super::*;
    #[test]
    fn anyhow() {
        let error1 = anyhow!("This {}", "works");
        let error2 = anyhow!("This works");
        assert_eq!(error1.to_string(), error2.to_string());
    }
    #[test]
    fn bail() {
        let f = || -> Result<()> { bail!("This {}", "works") };
        let error1 = f().err().unwrap();
        let f = || -> Result<()> { bail!("This works") };
        let error2 = f().err().unwrap();
        assert_eq!(error1.to_string(), error2.to_string());
    }
    #[test]
    fn ensure() {
        let f = || {
            ensure!(1 + 1 == 2, "This is correct");
            Ok(())
        };
        assert!(f().is_ok());
        let v = 1;
        let f = || {
            ensure!(v + v == 2, "This is correct, v: {}", v);
            Ok(())
        };
        assert!(f().is_ok());
        let f = || {
            ensure!(v + v == 1, "This is not correct, v: {}", v);
            Ok(())
        };
        assert!(f().is_err());
    }
}

use anyhow::{bail, Result};

use anyhow::{bail, ensure, Result};

}
#[test]
fn test_ensure() {
    let f = || {
        ensure!(1 + 1 == 2, "This is correct");
        Ok(())
    };
    assert!(f().is_ok());
    let v = 1;
    let f = || {
        ensure!(v + v == 2, "This is correct, v: {}", v);
        Ok(())
    };
    assert!(f().is_ok());
    let f = || {
        ensure!(v + v == 1, "This is not correct, v: {}", v);
        Ok(())
    };
    assert!(f().is_err());