315 lines
9.2 KiB
Rust
315 lines
9.2 KiB
Rust
use super::{make_test, TestOptions};
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use rustc_span::edition::DEFAULT_EDITION;
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#[test]
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fn make_test_basic() {
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//basic use: wraps with `fn main`, adds `#![allow(unused)]`
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let opts = TestOptions::default();
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let input = "assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_crate_name_no_use() {
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// If you give a crate name but *don't* use it within the test, it won't bother inserting
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// the `extern crate` statement.
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let opts = TestOptions::default();
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let input = "assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_crate_name() {
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// If you give a crate name and use it within the test, it will insert an `extern crate`
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// statement before `fn main`.
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let opts = TestOptions::default();
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let input = "use asdf::qwop;
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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extern crate r#asdf;
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 3));
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}
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#[test]
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fn make_test_no_crate_inject() {
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// Even if you do use the crate within the test, setting `opts.no_crate_inject` will skip
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// adding it anyway.
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let opts = TestOptions { no_crate_inject: true, display_warnings: false, attrs: vec![] };
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let input = "use asdf::qwop;
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_ignore_std() {
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// Even if you include a crate name, and use it in the doctest, we still won't include an
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// `extern crate` statement if the crate is "std" -- that's included already by the
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// compiler!
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let opts = TestOptions::default();
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let input = "use std::*;
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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fn main() {
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use std::*;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("std"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_manual_extern_crate() {
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// When you manually include an `extern crate` statement in your doctest, `make_test`
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// assumes you've included one for your own crate too.
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let opts = TestOptions::default();
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let input = "extern crate asdf;
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use asdf::qwop;
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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extern crate asdf;
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_manual_extern_crate_with_macro_use() {
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let opts = TestOptions::default();
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let input = "#[macro_use] extern crate asdf;
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use asdf::qwop;
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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#[macro_use] extern crate asdf;
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_opts_attrs() {
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// If you supplied some doctest attributes with `#![doc(test(attr(...)))]`, it will use
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// those instead of the stock `#![allow(unused)]`.
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let mut opts = TestOptions::default();
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opts.attrs.push("feature(sick_rad)".to_string());
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let input = "use asdf::qwop;
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assert_eq!(2+2, 4);";
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let expected = "#![feature(sick_rad)]
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extern crate r#asdf;
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 3));
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// Adding more will also bump the returned line offset.
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opts.attrs.push("feature(hella_dope)".to_string());
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let expected = "#![feature(sick_rad)]
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#![feature(hella_dope)]
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extern crate r#asdf;
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fn main() {
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use asdf::qwop;
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 4));
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}
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#[test]
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fn make_test_crate_attrs() {
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// Including inner attributes in your doctest will apply them to the whole "crate", pasting
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// them outside the generated main function.
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let opts = TestOptions::default();
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let input = "#![feature(sick_rad)]
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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#![feature(sick_rad)]
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_with_main() {
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// Including your own `fn main` wrapper lets the test use it verbatim.
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let opts = TestOptions::default();
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let input = "fn main() {
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assert_eq!(2+2, 4);
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}";
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let expected = "#![allow(unused)]
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 1));
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}
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#[test]
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fn make_test_fake_main() {
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// ... but putting it in a comment will still provide a wrapper.
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let opts = TestOptions::default();
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let input = "//Ceci n'est pas une `fn main`
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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//Ceci n'est pas une `fn main`
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_dont_insert_main() {
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// Even with that, if you set `dont_insert_main`, it won't create the `fn main` wrapper.
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let opts = TestOptions::default();
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let input = "//Ceci n'est pas une `fn main`
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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//Ceci n'est pas une `fn main`
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assert_eq!(2+2, 4);"
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.to_string();
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let (output, len, _) = make_test(input, None, true, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 1));
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}
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#[test]
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fn make_test_display_warnings() {
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// If the user is asking to display doctest warnings, suppress the default `allow(unused)`.
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let mut opts = TestOptions::default();
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opts.display_warnings = true;
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let input = "assert_eq!(2+2, 4);";
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let expected = "fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 1));
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}
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#[test]
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fn make_test_issues_21299_33731() {
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let opts = TestOptions::default();
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let input = "// fn main
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assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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// fn main
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fn main() {
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assert_eq!(2+2, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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let input = "extern crate hella_qwop;
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assert_eq!(asdf::foo, 4);";
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let expected = "#![allow(unused)]
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extern crate hella_qwop;
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extern crate r#asdf;
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fn main() {
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assert_eq!(asdf::foo, 4);
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("asdf"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 3));
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}
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#[test]
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fn make_test_main_in_macro() {
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let opts = TestOptions::default();
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let input = "#[macro_use] extern crate my_crate;
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test_wrapper! {
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fn main() {}
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}";
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let expected = "#![allow(unused)]
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#[macro_use] extern crate my_crate;
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test_wrapper! {
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fn main() {}
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}"
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.to_string();
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let (output, len, _) = make_test(input, Some("my_crate"), false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 1));
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}
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#[test]
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fn make_test_returns_result() {
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// creates an inner function and unwraps it
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let opts = TestOptions::default();
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let input = "use std::io;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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Ok::<(), io:Error>(())";
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let expected = "#![allow(unused)]
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fn main() { fn _inner() -> Result<(), impl core::fmt::Debug> {
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use std::io;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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Ok::<(), io:Error>(())
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} _inner().unwrap() }"
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.to_string();
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let (output, len, _) = make_test(input, None, false, &opts, DEFAULT_EDITION, None);
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assert_eq!((output, len), (expected, 2));
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}
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#[test]
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fn make_test_named_wrapper() {
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// creates an inner function with a specific name
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let opts = TestOptions::default();
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let input = "assert_eq!(2+2, 4);";
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let expected = "#![allow(unused)]
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fn main() { #[allow(non_snake_case)] fn _doctest_main__some_unique_name() {
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assert_eq!(2+2, 4);
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} _doctest_main__some_unique_name() }"
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.to_string();
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let (output, len, _) =
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make_test(input, None, false, &opts, DEFAULT_EDITION, Some("_some_unique_name"));
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assert_eq!((output, len), (expected, 2));
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}
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