Auto merge of #44274 - Mark-Simulacrum:rustdoc-tests, r=alexcrichton

Test rustdoc.

Also fixes the broken tests.

r? @alexcrichton

src/librustdoc/Cargo.toml

@@ -7,6 +7,8 @@ build = "build.rs"
 [lib]
 name = "rustdoc"
 path = "lib.rs"
+# SNAP/stage0(cargo)
+doctest = false
 
 [dependencies]
 env_logger = { version = "0.4", default-features = false }

src/librustdoc/clean/simplify.rs

@@ -15,13 +15,8 @@
 //! the AST (e.g. see all of `clean::inline`), but this is not always a
 //! non-lossy transformation. The current format of storage for where clauses
 //! for functions and such is simply a list of predicates. One example of this
-//! is that the AST predicate of:
-//!
-//!     where T: Trait<Foo=Bar>
-//!
-//! is encoded as:
-//!
-//!     where T: Trait, <T as Trait>::Foo = Bar
+//! is that the AST predicate of: `where T: Trait<Foo=Bar>` is encoded as:
+//! `where T: Trait, <T as Trait>::Foo = Bar`.
 //!
 //! This module attempts to reconstruct the original where and/or parameter
 //! bounds by special casing scenarios such as these. Fun!

src/librustdoc/html/markdown.rs

@@ -16,10 +16,12 @@
 //! of `fmt::Display`. Example usage:
 //!
 //! ```
-//! use rustdoc::html::markdown::Markdown;
+//! #![feature(rustc_private)]
+//!
+//! use rustdoc::html::markdown::{RenderType, Markdown};
 //!
 //! let s = "My *markdown* _text_";
-//! let html = format!("{}", Markdown(s));
+//! let html = format!("{}", Markdown(s, RenderType::Pulldown));
 //! // ... something using html
 //! ```