Add GUI regression test for scraped examples intra doc links

Author: GuillaumeGomez

tests/rustdoc-gui/scrape-example-intra-doc-links.goml

@@ -0,0 +1,27 @@
+// This test checks the intra doc links to code examples.
+go-to: "file://" + |DOC_PATH| + "/scrape_examples/index.html"
+
+assert-attribute: (
+    "//a[text()='check']",
+    {
+        "href": "../src/check/check.rs.html",
+        "title": "Example check",
+    },
+)
+assert-attribute: (
+    "//a[text()='check/check.rs']",
+    {
+        "href": "../src/check/check.rs.html",
+        "title": "Example check",
+    },
+)
+assert-attribute: (
+    "//a[text()='check/sub.rs']",
+    {
+        "href": "../src/check/sub.rs.html",
+        "title": "Example check",
+    },
+)
+// We now click on the link to ensure it works.
+click: "//a[text()='check/sub.rs']"
+wait-for-text: (".main-heading h1", "check/sub.rs")

tests/rustdoc-gui/src/scrape_examples/examples/check.rs

@@ -1,4 +1,8 @@
+mod sub;
+
 fn main() {
+    sub::foo();
+
     for i in 0..9 {
         println!("hello world!");
         println!("hello world!");

tests/rustdoc-gui/src/scrape_examples/examples/sub.rs

@@ -0,0 +1 @@
+pub fn foo() {}

tests/rustdoc-gui/src/scrape_examples/src/lib.rs

@@ -1,4 +1,7 @@
 //@ run-flags:-Zrustdoc-scrape-examples
+
+//! [example@check] [example@check/check.rs] [example@check/sub.rs]
+
 /// # Examples
 ///
 /// ```