rustdoc: add test case for pointer cursor

src/test/rustdoc-gui/cursor.goml

@@ -0,0 +1,24 @@
+// This test ensures that several clickable items actually have the pointer cursor.
+goto: "file://" + |DOC_PATH| + "/lib2/struct.Foo.html"
+
+// the `[+]/[-]` button
+assert-css: ("#toggle-all-docs", {"cursor": "pointer"})
+
+// the button next to the path header
+assert-css: ("#copy-path", {"cursor": "pointer"})
+
+// the search tabs
+write: (".search-input", "Foo")
+// To be SURE that the search will be run.
+press-key: 'Enter'
+// Waiting for the search results to appear...
+wait-for: "#titles"
+assert-css: ("#titles > button", {"cursor": "pointer"})
+
+// mobile sidebar toggle button
+size: (500, 700)
+assert-css: (".sidebar-menu-toggle", {"cursor": "pointer"})
+
+// the sidebar toggle button on the source code pages
+goto: "file://" + |DOC_PATH| + "/src/lib2/lib.rs.html"
+assert-css: ("#sidebar-toggle > button", {"cursor": "pointer"})