assertables/assert_not_ends_with.rs
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//! Assert an expression (such as a string) does not end with an expression (such as a string).
//!
//! Pseudocode:<br>
//! ¬ a.ends_with(b)
//!
//! # Example
//!
//! ```rust
//! # #[macro_use] extern crate assertables;
//! # fn main() {
//! let a = "alfa";
//! let b = "al";
//! assert_not_ends_with!(a, b);
//! # }
//! ```
//!
//! # Module macros
//!
//! * [`assert_not_ends_with`](macro@crate::assert_not_ends_with)
//! * [`assert_not_ends_with_as_result`](macro@crate::assert_not_ends_with_as_result)
//! * [`debug_assert_not_ends_with`](macro@crate::debug_assert_not_ends_with)
/// Assert an expression (such as a string) does not end with an expression (such as a substring).
///
/// Pseudocode:<br>
/// ¬ a.ends_with(b)
///
/// * If true, return Result `Ok(())`.
///
/// * Otherwise, return Result `Err` with a diagnostic message.
///
/// This macro provides the same statements as [`assert_not_ends_with`](macro.assert_not_ends_with.html),
/// except this macro returns a Result, rather than doing a panic.
///
/// This macro is useful for runtime checks, such as checking parameters,
/// or sanitizing inputs, or handling different results in different ways.
///
/// # Module macros
///
/// * [`assert_not_ends_with`](macro@crate::assert_not_ends_with)
/// * [`assert_not_ends_with_as_result`](macro@crate::assert_not_ends_with_as_result)
/// * [`debug_assert_not_ends_with`](macro@crate::debug_assert_not_ends_with)
///
#[macro_export]
macro_rules! assert_not_ends_with_as_result {
($a:expr, $b:expr $(,)?) => {{
match (&$a, &$b) {
(a, b) => {
if !(a.ends_with(b)) {
Ok(())
} else {
Err(format!(
concat!(
"assertion failed: `assert_not_ends_with!(a, b)`\n",
"https://docs.rs/assertables/8.9.0/assertables/macro.assert_not_ends_with.html\n",
" a label: `{}`,\n",
" a debug: `{:?}`,\n",
" b label: `{}`,\n",
" b debug: `{:?}`",
),
stringify!($a),
a,
stringify!($b),
b,
))
}
}
}
}};
}
#[cfg(test)]
mod tests {
#[test]
fn test_assert_not_ends_with_as_result_x_success() {
let a = "alfa";
let b = "al";
let result = assert_not_ends_with_as_result!(a, b);
assert_eq!(result.unwrap(), ());
}
#[test]
fn test_assert_not_ends_with_as_result_x_failure() {
let a = "alfa";
let b = "fa";
let result = assert_not_ends_with_as_result!(a, b);
let actual = result.unwrap_err();
let expect = concat!(
"assertion failed: `assert_not_ends_with!(a, b)`\n",
"https://docs.rs/assertables/8.9.0/assertables/macro.assert_not_ends_with.html\n",
" a label: `a`,\n",
" a debug: `\"alfa\"`,\n",
" b label: `b`,\n",
" b debug: `\"fa\"`"
);
assert_eq!(actual, expect);
}
}
/// Assert an expression (such as a string) does not end with an expression (such as a string).
///
/// Pseudocode:<br>
/// ¬ a.ends_with(b)
///
/// * If true, return `()`.
///
/// * Otherwise, call [`panic!`] with a message and the values of the
/// expressions with their debug representations.
///
/// # Examples
///
/// ```rust
/// # #[macro_use] extern crate assertables;
/// # use std::panic;
/// # fn main() {
/// let a = "alfa";
/// let b = "al";
/// assert_not_ends_with!(a, b);
///
/// # let result = panic::catch_unwind(|| {
/// let a = "alfa";
/// let b = "fa";
/// assert_not_ends_with!(a, b);
/// # });
/// // assertion failed: `assert_not_ends_with!(a, b)`
/// // https://docs.rs/assertables/8.9.0/assertables/macro.assert_not_ends_with.html
/// // a label: `a`,
/// // a debug: `\"alfa\"`,
/// // b label: `b`,
/// // b debug: `\"fa\"`
/// # let actual = result.unwrap_err().downcast::<String>().unwrap().to_string();
/// # let expect = concat!(
/// # "assertion failed: `assert_not_ends_with!(a, b)`\n",
/// # "https://docs.rs/assertables/8.9.0/assertables/macro.assert_not_ends_with.html\n",
/// # " a label: `a`,\n",
/// # " a debug: `\"alfa\"`,\n",
/// # " b label: `b`,\n",
/// # " b debug: `\"fa\"`"
/// # );
/// # assert_eq!(actual, expect);
/// # }
/// ```
///
/// # Module macros
///
/// * [`assert_not_ends_with`](macro@crate::assert_not_ends_with)
/// * [`assert_not_ends_with_as_result`](macro@crate::assert_not_ends_with_as_result)
/// * [`debug_assert_not_ends_with`](macro@crate::debug_assert_not_ends_with)
///
#[macro_export]
macro_rules! assert_not_ends_with {
($a:expr, $b:expr $(,)?) => {{
match assert_not_ends_with_as_result!($a, $b) {
Ok(()) => (),
Err(err) => panic!("{}", err),
}
}};
($a:expr, $b:expr, $($message:tt)+) => {{
match assert_not_ends_with_as_result!($a, $b) {
Ok(()) => (),
Err(_err) => panic!("{}", $($message)+),
}
}};
}
/// Assert an expression (such as a string) does not end with an expression (such as a string).
///
/// Pseudocode:<br>
/// ¬ a.ends_with(b)
///
/// This macro provides the same statements as [`assert_not_ends_with`](macro.assert_not_ends_with.html),
/// except this macro's statements are only enabled in non-optimized
/// builds by default. An optimized build will not execute this macro's
/// statements unless `-C debug-assertions` is passed to the compiler.
///
/// This macro is useful for checks that are too expensive to be present
/// in a release build but may be helpful during development.
///
/// The result of expanding this macro is always type checked.
///
/// An unchecked assertion allows a program in an inconsistent state to
/// keep running, which might have unexpected consequences but does not
/// introduce unsafety as long as this only happens in safe code. The
/// performance cost of assertions, however, is not measurable in general.
/// Replacing `assert*!` with `debug_assert*!` is thus only encouraged
/// after thorough profiling, and more importantly, only in safe code!
///
/// This macro is intended to work in a similar way to
/// [`std::debug_assert`](https://doc.rust-lang.org/std/macro.debug_assert.html).
///
/// # Module macros
///
/// * [`assert_not_ends_with`](macro@crate::assert_not_ends_with)
/// * [`assert_not_ends_with`](macro@crate::assert_not_ends_with)
/// * [`debug_assert_not_ends_with`](macro@crate::debug_assert_not_ends_with)
///
#[macro_export]
macro_rules! debug_assert_not_ends_with {
($($arg:tt)*) => {
if $crate::cfg!(debug_assertions) {
$crate::assert_not_ends_with!($($arg)*);
}
};
}