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Put #[macro_use] extern crate <crate> before fn main() in doctests #49188

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Mar 22, 2018
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Put #[macro_use] extern crate <crate> before fn main() in doctests #49188

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19 changes: 19 additions & 0 deletions src/librustdoc/test.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -416,6 +416,7 @@ fn partition_source(s: &str) -> (String, String) {
let trimline = line.trim();
let header = trimline.is_whitespace() ||
trimline.starts_with("#![") ||
trimline.starts_with("#[macro_use] extern crate") ||
trimline.starts_with("extern crate");
if !header || after_header {
after_header = true;
Expand Down Expand Up @@ -825,6 +826,24 @@ assert_eq!(2+2, 4);
assert_eq!(output, (expected, 2));
}

#[test]
fn make_test_manual_extern_crate_with_macro_use() {
let opts = TestOptions::default();
let input =
"#[macro_use] extern crate asdf;
use asdf::qwop;
assert_eq!(2+2, 4);";
let expected =
"#![allow(unused)]
#[macro_use] extern crate asdf;
fn main() {
use asdf::qwop;
assert_eq!(2+2, 4);
}".to_string();
let output = make_test(input, Some("asdf"), false, &opts);
assert_eq!(output, (expected, 2));
}

#[test]
fn make_test_opts_attrs() {
//if you supplied some doctest attributes with #![doc(test(attr(...)))], it will use those
Expand Down