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use traits::Contains;
pub fn validate_contains<T: Contains>(val: T, needle: &str) -> bool {
val.has_element(needle)
}
#[cfg(test)]
mod tests {
use std::borrow::Cow;
use std::collections::HashMap;
use super::*;
#[test]
fn test_validate_contains_string() {
assert!(validate_contains("hey", "e"));
}
#[test]
fn test_validate_contains_string_can_fail() {
assert_eq!(validate_contains("hey", "o"), false);
}
#[test]
fn test_validate_contains_hashmap_key() {
let mut map = HashMap::new();
map.insert("hey".to_string(), 1);
assert!(validate_contains(map, "hey"));
}
#[test]
fn test_validate_contains_hashmap_key_can_fail() {
let mut map = HashMap::new();
map.insert("hey".to_string(), 1);
assert_eq!(validate_contains(map, "bob"), false);
}
#[test]
fn test_validate_contains_cow() {
let test: Cow<'static, str> = "hey".into();
assert!(validate_contains(test, "e"));
let test: Cow<'static, str> = String::from("hey").into();
assert!(validate_contains(test, "e"));
}
#[test]
fn test_validate_contains_cow_can_fail() {
let test: Cow<'static, str> = "hey".into();
assert_eq!(validate_contains(test, "o"), false);
let test: Cow<'static, str> = String::from("hey").into();
assert_eq!(validate_contains(test, "o"), false);
}
}