Chapter 11.1 Listing 11-7 displayed code is incorrect

[ach619]

Example 11-7 is supposed to be a passing example but the listed code results in a failure to compile
Code listed is as follows:
#![allow(unused_variables)]
fn main() {
pub fn add_two(a: i32) -> i32 {
a + 2
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_adds_two() {
assert_eq!(4, add_two(2));
}
}
}

//Should result in:

running 1 test
test tests::it_adds_two ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

//Instead results in:

error[E0425]: cannot find function greeting in this scope
--> src/lib.rs:14:22
|
14 | let result = greeting("Carol");
| ^^^^^^^^ not found in this scope

warning: unused import: super::*
--> src/lib.rs:10:9
|
10 | use super::*;
| ^^^^^^^^
|
= note: #[warn(unused_imports)] on by default

warning: function is never used: main
--> src/lib.rs:3:1
|
3 | fn main() {
| ^^^^^^^^^
|
= note: #[warn(dead_code)] on by default

error: aborting due to previous error

error: Could not compile adder.
warning: build failed, waiting for other jobs to finish...
error: build failed

I can fix and submit if allowed. Thanks love the book

[ach619]

The main() should be removed in the expanded code, it is unnecessary

[ach619]

This fix should be applied to all further examples in Chapter 11.1 as all code is executed using cargo test in the src/lib.rs and does not require a main()

[carols10cents]

Yup, you're right. Adding a hidden # fn main() {} should stop the automatic main wrapping. Example: https://github.com/rust-lang/book/blame/master/second-edition/src/ch15-06-reference-cycles.md#L24

We'd love a pull request! ❤️

[ach619]

Ahh, I see. Took a look at the example in the link, thanks. making a pull request

[ach619]

I submitted the pull request, I also did one for chapter 13.3 example 13-27 with the same issue. Thanks for letting me help.