Macro assert_set_subset

macro_rules! assert_set_subset {
    ($a_collection:expr, $b_collection:expr $(,)?) => { ... };
    ($a_collection:expr, $b_collection:expr, $($message:tt)+) => { ... };
}

Assert a set is a subset of another.

Pseudocode:
(a_collection ⇒ a_set) ⊂ (b_collection ⇒ b_set)

• If true, return (a_set, b_set).

• Otherwise, call panic! with a message and the values of the expressions with their debug representations.

Examples

use assertables::*;

let a = [1, 2];
let b = [1, 2, 3];
assert_set_subset!(a, b);

// This will panic
let a = [1, 2, 3];
let b = [1, 2];
assert_set_subset!(a, b);
// assertion failed: `assert_set_subset!(a_collection, b_collection)`
// https://docs.rs/assertables/…/assertables/macro.assert_set_subset.html
//  a label: `a`,
//  a debug: `[1, 2, 3]`,
//  b label: `b`,
//  b debug: `[1, 2]`,
//        a: `{1, 2, 3}`,
//        b: `{1, 2}`

This implementation uses ::std::collections::BTreeSet to count items and sort them.

Module macros

• assert_set_subset
• assert_set_subset_as_result
• debug_assert_set_subset