Add GUI test for "Directly go to item in search if there is only one result" setting

tests/rustdoc-gui/setting-go-to-only-result.goml

@@ -0,0 +1,63 @@
+// Checks that the setting "Directly go to item in search if there is only one result " is working as expected.
+
+define-function: (
+    "check-setting",
+    (storage_value, setting_attribute_value),
+    block {
+        assert-local-storage: {"rustdoc-go-to-only-result": |storage_value|}
+        click: "#settings-menu"
+        wait-for: "#settings"
+        assert-property: ("#go-to-only-result", {"checked": |setting_attribute_value|})
+    }
+)
+
+goto: "file://" + |DOC_PATH| + "/lib2/index.html"
+
+call-function: ("check-setting", {
+    "storage_value": null,
+    "setting_attribute_value": "false",
+})
+
+// By default, the search doesn't automatically go to the page if there is only one result.
+goto: "file://" + |DOC_PATH| + "/lib2/index.html?search=HasALongTraitWithParams"
+// It will timeout if the setting isn't working.
+wait-for: "#search"
+assert-document-property: ({"URL": "/lib2/index.html"}, CONTAINS)
+
+// Now we change its value.
+click: "#settings-menu"
+wait-for: "#settings"
+click: "#go-to-only-result"
+assert-local-storage: {"rustdoc-go-to-only-result": "true"}
+
+goto: "file://" + |DOC_PATH| + "/lib2/index.html"
+// We enter it into the search.
+write: (".search-input", "HasALongTraitWithParams")
+wait-for-document-property: {"title": "HasALongTraitWithParams in lib2 - Rust"}
+assert-document-property: ({"URL": "/lib2/struct.HasALongTraitWithParams.html"}, ENDS_WITH)
+
+// We try again to see if it goes to the only result
+goto: "file://" + |DOC_PATH| + "/lib2/index.html?search=HasALongTraitWithParams"
+wait-for-document-property: {"title": "HasALongTraitWithParams in lib2 - Rust"}
+assert-document-property: ({"URL": "/lib2/struct.HasALongTraitWithParams.html"}, ENDS_WITH)
+
+// We check the settings
+call-function: ("check-setting", {
+    "storage_value": "true",
+    "setting_attribute_value": "true",
+})
+
+// And now we re-disable the setting.
+click: "#go-to-only-result"
+assert-local-storage: {"rustdoc-go-to-only-result": "false"}
+
+goto: "file://" + |DOC_PATH| + "/lib2/index.html?search=HasALongTraitWithParams"
+// It will timeout if the setting isn't working.
+wait-for: "#search"
+assert-document-property: ({"URL": "/lib2/index.html"}, CONTAINS)
+
+// And we check everything is back the way it was before.
+call-function: ("check-setting", {
+    "storage_value": "false",
+    "setting_attribute_value": "false",
+})