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#[macro_export]
macro_rules! assure_ne {
($left:expr, $right:expr $(,)?) => ({
match (&$left, &$right) {
(left_val, right_val) => {
if (left_val != right_val) {
Ok($left)
} else {
Err(format!("assure_ne left:{:?} right:{:?}", left_val, right_val))
}
}
}
});
($left:expr, $right:expr, $($arg:tt)+) => ({
match (&($left), &($right)) {
(left_val, right_val) => {
if (left_val != right_val) {
Ok($left)
} else {
Err($($arg)+)
}
}
}
});
}
#[cfg(test)]
mod tests {
#[test]
fn test_assure_ne_x_i32_arity_2_return_ok() {
let a = 1;
let b = 2;
let x = assure_ne!(a, b);
assert!(x.is_ok());
assert_eq!(
x.unwrap(),
a
);
}
#[test]
fn test_assure_ne_x_i32_arity_2_return_err() {
let a = 1;
let b = 1;
let x = assure_ne!(a, b);
assert!(x.is_err());
assert_eq!(
x.unwrap_err(),
"assure_ne left:1 right:1"
);
}
#[test]
fn test_assure_ne_x_i32_arity_3_return_ok() {
let a = 1;
let b = 2;
let x = assure_ne!(a, b, "message");
assert!(x.is_ok());
assert_eq!(
x.unwrap(),
a
);
}
#[test]
fn test_assure_ne_x_i32_arity_3_return_err() {
let a = 1;
let b = 1;
let x = assure_ne!(a, b, "message");
assert!(x.is_err());
assert_eq!(
x.unwrap_err(),
"message"
);
}
#[test]
fn test_assure_ne_x_str_arity_2_return_ok() {
let a = "aa";
let b = "bb";
let x = assure_ne!(a, b);
assert!(x.is_ok());
assert_eq!(
x.unwrap(),
a
);
}
#[test]
fn test_assure_ne_x_str_arity_2_return_err() {
let a = "aa";
let b = "aa";
let x = assure_ne!(a, b);
assert!(x.is_err());
assert_eq!(
x.unwrap_err(),
"assure_ne left:\"aa\" right:\"aa\""
);
}
#[test]
fn test_assure_ne_x_str_arity_3_return_ok() {
let a = "aa";
let b = "bb";
let x = assure_ne!(a, b, "message");
assert!(x.is_ok());
assert_eq!(
x.unwrap(),
a
);
}
#[test]
fn test_assure_ne_x_str_arity_3_return_err() {
let a = "aa";
let b = "aa";
let x = assure_ne!(a, b, "message");
assert!(x.is_err());
assert_eq!(
x.unwrap_err(),
"message"
);
}
}