Macro assert_eq_msg 

macro_rules! assert_eq_msg {
    ($actual:expr, $expected:expr, $msg:expr) => { ... };
}

Assert equality with detailed error message and diff output

Provides better error messages for equality assertions with automatic diff generation.

Example

use chicago_tdd_tools::assert_eq_msg;

let actual = 42;
let expected = 43;
assert_eq_msg!(actual, expected, "Values should match");
// Panics with: "Values should match: expected 43, got 42"