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diff --git a/tests/rustdoc-gui/sidebar-mobile.goml b/tests/rustdoc-gui/sidebar-mobile.goml
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+// This test ensure that the sidebar isn't "hidden" on mobile but instead moved out of the viewport.
+// This is especially important for devices for "text-first" content (like for users with
+// sight issues).
+goto: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
+// Switching to "mobile view" by reducing the width to 600px.
+size: (600, 600)
+assert-css: (".sidebar", {"display": "block", "left": "-1000px"})
+// Opening the sidebar menu.
+click: ".sidebar-menu-toggle"
+assert-css: (".sidebar", {"display": "block", "left": "0px"})
+// Closing the sidebar menu.
+click: ".sidebar-menu-toggle"
+assert-css: (".sidebar", {"display": "block", "left": "-1000px"})
+// Force the sidebar open by focusing a link inside it.
+// This makes it easier for keyboard users to get to it.
+focus: ".sidebar-elems h3 a"
+assert-css: (".sidebar", {"display": "block", "left": "0px"})
+// When we tab out of the sidebar, close it.
+focus: ".search-input"
+assert-css: (".sidebar", {"display": "block", "left": "-1000px"})
+
+// Open the sidebar menu.
+click: ".sidebar-menu-toggle"
+assert-css: (".sidebar", {"left": "0px"})
+
+// Make sure the "struct Foo" header is hidden, since the mobile topbar already does it.
+assert-css: ("//nav[contains(@class, 'sidebar')]//h2/a[text()='Foo']/parent::h2", {"display": "none"})
+// Make sure the global navigation is still here.
+assert-css: ("//nav[contains(@class, 'sidebar')]//h2/a[text()='In test_docs']/parent::h2", {"display": "block"})
+
+// Click elsewhere.
+click: "body"
+assert-css: (".sidebar", {"display": "block", "left": "-1000px"})
+
+// Open the sidebar menu, and make sure pressing Escape closes it.
+click: ".sidebar-menu-toggle"
+assert-css: (".sidebar", {"left": "0px"})
+press-key: "Escape"
+assert-css: (".sidebar", {"display": "block", "left": "-1000px"})
+
+// Check that the topbar is visible
+assert-property: (".mobile-topbar", {"clientHeight": "45"})
+
+// Check that clicking an element from the sidebar scrolls to the right place
+// so the target is not obscured by the topbar.
+click: ".sidebar-menu-toggle"
+click: ".sidebar-elems section .block li > a"
+assert-position: ("#method\.must_use", {"y": 45})
+
+// Check that the bottom-most item on the sidebar menu can be scrolled fully into view.
+click: ".sidebar-menu-toggle"
+scroll-to: ".block.keyword li:nth-child(1)"
+compare-elements-position-near: (".block.keyword li:nth-child(1)", ".mobile-topbar", {"y": 543.19})
+
+// Now checking the background color of the sidebar.
+show-text: true
+
+define-function: (
+    "check-colors",
+    (theme, color, background),
+    block {
+        local-storage: {"rustdoc-use-system-theme": "false", "rustdoc-theme": |theme|}
+        reload:
+
+        // Open the sidebar menu.
+        click: ".sidebar-menu-toggle"
+        assert-css: (".sidebar", {
+            "background-color": |background|,
+            "color": |color|,
+        })
+    },
+)
+
+call-function: ("check-colors", {
+    "theme": "ayu",
+    "color": "rgb(197, 197, 197)",
+    "background": "rgb(20, 25, 31)",
+})
+call-function: ("check-colors", {
+    "theme": "dark",
+    "color": "rgb(221, 221, 221)",
+    "background": "rgb(80, 80, 80)",
+})
+call-function: ("check-colors", {
+    "theme": "light",
+    "color": "rgb(0, 0, 0)",
+    "background": "rgb(245, 245, 245)",
+})