Assert a ::std::fs::read_to_string(path) value is equal to an expression.
Pseudocode: std::fs::read_to_string(path) = expr
use assertables::*; let path = "alfa.txt"; let value = String::from("alfa\n"); assert_fs_read_to_string_eq_x!(&path, &value);
assert_fs_read_to_string_eq_x
assert_fs_read_to_string_eq_x_as_result
debug_assert_fs_read_to_string_eq_x