Add GUI regression test for non-rust code blocks line numbers

tests/rustdoc-gui/docblock-code-block-line-number.goml

@@ -87,7 +87,7 @@ assert-css: ("#settings", {"display": "block"})
 
 // Then, click the toggle button.
 click: "input#line-numbers"
-wait-for: 100 // wait-for-false does not exist
+wait-for: 100 // FIXME: `wait-for-false` does not exist
 assert-false: "pre.example-line-numbers"
 assert-local-storage: {"rustdoc-line-numbers": "false" }
 
@@ -107,6 +107,8 @@ assert-css: (
 click: "input#line-numbers"
 wait-for: "pre.example-line-numbers"
 assert-local-storage: {"rustdoc-line-numbers": "true" }
+wait-for: 100 // FIXME: `wait-for-false` does not exist
+assert: "pre.example-line-numbers"
 
 // Same check with scraped examples line numbers.
 go-to: "file://" + |DOC_PATH| + "/scrape_examples/fn.test_many.html"
@@ -145,9 +147,6 @@ assert-css: (
     ALL,
 )
 
-// Checking line numbers on scraped code examples.
-go-to: "file://" + |DOC_PATH| + "/scrape_examples/fn.test_many.html"
-
 define-function: (
     "check-padding",
     [path, padding_bottom],
@@ -157,19 +156,19 @@ define-function: (
             "padding-bottom": "0px",
             "padding-left": "0px",
             "padding-right": "0px",
-        })
+        }, ALL)
         assert-css: (|path| + " .src-line-numbers > pre", {
             "padding-top": "14px",
             "padding-bottom": |padding_bottom|,
             "padding-left": "0px",
             "padding-right": "0px",
-        })
+        }, ALL)
         assert-css: (|path| + " .src-line-numbers > pre > span", {
             "padding-top": "0px",
             "padding-bottom": "0px",
             "padding-left": "8px",
             "padding-right": "8px",
-        })
+        }, ALL)
     },
 )
 
@@ -188,6 +187,35 @@ call-function: ("check-padding", {
     "padding_bottom": "14px",
 })
 
+define-function: ("check-line-numbers-existence", [], block {
+    assert-local-storage: {"rustdoc-line-numbers": "true" }
+    assert-false: ".example-line-numbers"
+    click: "#settings-menu"
+    wait-for: "#settings"
+
+    // Then, click the toggle button.
+    click: "input#line-numbers"
+    wait-for: 100 // FIXME: `wait-for-false` does not exist
+    assert-local-storage-false: {"rustdoc-line-numbers": "true" }
+    assert-false: ".example-line-numbers"
+    // Line numbers should still be there.
+    assert: ".src-line-numbers"
+    // Now disabling the setting.
+    click: "input#line-numbers"
+    wait-for: 100 // FIXME: `wait-for-false` does not exist
+    assert-local-storage: {"rustdoc-line-numbers": "true" }
+    assert-false: ".example-line-numbers"
+    // Line numbers should still be there.
+    assert: ".src-line-numbers"
+    // Closing settings menu.
+    click: "#settings-menu"
+    wait-for-css: ("#settings", {"display": "none"})
+})
+
+// Checking that turning off the line numbers setting won't remove line numbers from scraped
+// examples.
+call-function: ("check-line-numbers-existence", {})
+
 // Now checking the line numbers in the source code page.
 click: ".src"
 assert-css: (".src-line-numbers", {
@@ -202,3 +230,28 @@ assert-css: (".src-line-numbers > a", {
     "padding-left": "8px",
     "padding-right": "8px",
 })
+// Checking that turning off the line numbers setting won't remove line numbers.
+call-function: ("check-line-numbers-existence", {})
+
+// Now checking that even non-rust code blocks have line numbers generated.
+go-to: "file://" + |DOC_PATH| + "/lib2/sub_mod/struct.Foo.html"
+assert-local-storage: {"rustdoc-line-numbers": "true" }
+assert: ".example-wrap > pre.language-txt"
+assert: ".example-wrap > pre.rust"
+assert-count: (".example-wrap", 2)
+assert-count: (".example-wrap > pre.example-line-numbers", 2)
+
+click: "#settings-menu"
+wait-for: "#settings"
+
+// Then, click the toggle button.
+click: "input#line-numbers"
+wait-for: 100 // FIXME: `wait-for-false` does not exist
+assert-local-storage-false: {"rustdoc-line-numbers": "true" }
+assert-count: (".example-wrap > pre.example-line-numbers", 0)
+
+// Now turning off the setting.
+click: "input#line-numbers"
+wait-for: 100 // FIXME: `wait-for-false` does not exist
+assert-local-storage: {"rustdoc-line-numbers": "true" }
+assert-count: (".example-wrap > pre.example-line-numbers", 2)