add tests for private doctests

Author: QuietMisdreavus

src/test/rustdoc/private-doctests-private.rs

@@ -0,0 +1,49 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-flags: --test --document-private-items
+// should-fail
+
+// issue #30094: rustdoc runs doctests on private items even though those docs don't appear
+//
+// in this version, we show that passing --document-private-items causes the private doctests to
+// run
+
+mod private {
+    /// Does all the work.
+    ///
+    /// ```
+    /// panic!("oh no");
+    /// ```
+    pub fn real_job(a: u32, b: u32) -> u32 {
+        return a + b;
+    }
+}
+
+pub mod public {
+    use super::private;
+
+    /// ```
+    /// // this was originally meant to link to public::function but we can't do that here
+    /// assert_eq!(2+2, 4);
+    /// ```
+    pub fn function(a: u32, b: u32) -> u32 {
+        return complex_helper(a, b);
+    }
+
+    /// Helps with stuff.
+    ///
+    /// ```
+    /// panic!("oh no");
+    /// ```
+    fn complex_helper(a: u32, b: u32) -> u32 {
+        return private::real_job(a, b);
+    }
+}

src/test/rustdoc/private-doctests.rs

@@ -0,0 +1,45 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-flags: --test
+
+// issue #30094: rustdoc runs doctests on private items even though those docs don't appear
+
+mod private {
+    /// Does all the work.
+    ///
+    /// ```
+    /// panic!("oh no");
+    /// ```
+    pub fn real_job(a: u32, b: u32) -> u32 {
+        return a + b;
+    }
+}
+
+pub mod public {
+    use super::private;
+
+    /// ```
+    /// // this was originally meant to link to public::function but we can't do that here
+    /// assert_eq!(2+2, 4);
+    /// ```
+    pub fn function(a: u32, b: u32) -> u32 {
+        return complex_helper(a, b);
+    }
+
+    /// Helps with stuff.
+    ///
+    /// ```
+    /// panic!("oh no");
+    /// ```
+    fn complex_helper(a: u32, b: u32) -> u32 {
+        return private::real_job(a, b);
+    }
+}