Rollup merge of #104014 - GuillaumeGomez:run-button-css-var, r=notriddle

Migrate test-arrow to CSS variables

There should be no UI changes. I kept both `color` and `background-color` properties even though only the ayu theme is actually completely making use of them on hover.

r? ``@notriddle``

src/librustdoc/html/static/css/rustdoc.css

@@ -1204,6 +1204,12 @@ a.test-arrow {
 	top: 5px;
 	right: 5px;
 	z-index: 1;
+	color: var(--test-arrow-color);
+	background-color: var(--test-arrow-background-color);
+}
+a.test-arrow:hover {
+	color: var(--test-arrow-hover-color);
+	background-color: var(--test-arrow-hover-background-color);
 }
 .example-wrap:hover .test-arrow {
 	visibility: visible;

src/librustdoc/html/static/css/themes/ayu.css

@@ -59,6 +59,10 @@ Original by Dempfi (https://github.com/dempfi/ayu)
 	--example-line-numbers-border-color: none;
 	--src-line-numbers-span-color: #5c6773;
 	--src-line-number-highlighted-background-color: rgba(255, 236, 164, 0.06);
+	--test-arrow-color: #788797;
+	--test-arrow-background-color: rgba(57, 175, 215, 0.09);
+	--test-arrow-hover-color: #c5c5c5;
+	--test-arrow-hover-background-color: rgba(57, 175, 215, 0.368);
 }
 
 .slider {
@@ -172,18 +176,6 @@ details.rustdoc-toggle > summary::before {
 	color: #788797;
 }
 
-a.test-arrow {
-	font-size: 100%;
-	color: #788797;
-	border-radius: 4px;
-	background-color: rgba(57, 175, 215, 0.09);
-}
-
-a.test-arrow:hover {
-	background-color: rgba(57, 175, 215, 0.368);
-	color: #c5c5c5;
-}
-
 :target {
 	background: rgba(255, 236, 164, 0.06);
 	border-right: 3px solid rgba(255, 180, 76, 0.85);

src/librustdoc/html/static/css/themes/dark.css

@@ -54,6 +54,10 @@
 	--example-line-numbers-border-color: #4a4949;
 	--src-line-numbers-span-color: #3b91e2;
 	--src-line-number-highlighted-background-color: #0a042f;
+	--test-arrow-color: #dedede;
+	--test-arrow-background-color: rgba(78, 139, 202, 0.2);
+	--test-arrow-hover-color: #dedede;
+	--test-arrow-hover-background-color: #4e8bca;
 }
 
 .slider {
@@ -94,15 +98,6 @@ details.rustdoc-toggle > summary::before {
 	filter: invert(69%) sepia(60%) saturate(6613%) hue-rotate(184deg) brightness(100%) contrast(91%);
 }
 
-a.test-arrow {
-	color: #dedede;
-	background-color: rgba(78, 139, 202, 0.2);
-}
-
-a.test-arrow:hover{
-	background-color: #4e8bca;
-}
-
 :target {
 	background-color: #494a3d;
 	border-right: 3px solid #bb7410;

src/librustdoc/html/static/css/themes/light.css

@@ -54,6 +54,10 @@
 	--example-line-numbers-border-color: #c7c7c7;
 	--src-line-numbers-span-color: #c67e2d;
 	--src-line-number-highlighted-background-color: #fdffd3;
+	--test-arrow-color: #f5f5f5;
+	--test-arrow-background-color: rgba(78, 139, 202, 0.2);
+	--test-arrow-hover-color: #f5f5f5;
+	--test-arrow-hover-background-color: #4e8bca;
 }
 
 .slider {
@@ -89,15 +93,6 @@ body.source .example-wrap pre.rust a {
 	filter: invert(44%) sepia(18%) saturate(23%) hue-rotate(317deg) brightness(96%) contrast(93%);
 }
 
-a.test-arrow {
-	color: #f5f5f5;
-	background-color: rgba(78, 139, 202, 0.2);
-}
-
-a.test-arrow:hover{
-	background-color: #4e8bca;
-}
-
 :target {
 	background: #FDFFD3;
 	border-right: 3px solid #AD7C37;

src/test/rustdoc-gui/run-on-hover.goml

@@ -1,7 +1,54 @@
 // Example code blocks sometimes have a "Run" button to run them on the
 // Playground. That button is hidden until the user hovers over the code block.
-// This test checks that it is hidden, and that it shows on hover.
+// This test checks that it is hidden, and that it shows on hover. It also
+// checks for its color.
 goto: "file://" + |DOC_PATH| + "/test_docs/fn.foo.html"
-assert-css: (".test-arrow", {"visibility": "hidden"})
+show-text: true
-move-cursor-to: ".example-wrap"
+
-assert-css: (".test-arrow", {"visibility": "visible"})
+define-function: (
+    "check-run-button",
+    (theme, color, background, hover_color, hover_background),
+    [
+        ("local-storage", {"rustdoc-theme": |theme|, "rustdoc-use-system-theme": "false"}),
+        ("reload"),
+        ("assert-css", (".test-arrow", {"visibility": "hidden"})),
+        ("move-cursor-to", ".example-wrap"),
+        ("assert-css", (".test-arrow", {
+            "visibility": "visible",
+            "color": |color|,
+            "background-color": |background|,
+            "font-size": "22px",
+            "border-radius": "5px",
+        })),
+        ("move-cursor-to", ".test-arrow"),
+        ("assert-css", (".test-arrow:hover", {
+            "visibility": "visible",
+            "color": |hover_color|,
+            "background-color": |hover_background|,
+            "font-size": "22px",
+            "border-radius": "5px",
+        })),
+    ],
+)
+
+call-function: ("check-run-button", {
+    "theme": "ayu",
+    "color": "rgb(120, 135, 151)",
+    "background": "rgba(57, 175, 215, 0.09)",
+    "hover_color": "rgb(197, 197, 197)",
+    "hover_background": "rgba(57, 175, 215, 0.37)",
+})
+call-function: ("check-run-button", {
+    "theme": "dark",
+    "color": "rgb(222, 222, 222)",
+    "background": "rgba(78, 139, 202, 0.2)",
+    "hover_color": "rgb(222, 222, 222)",
+    "hover_background": "rgb(78, 139, 202)",
+})
+call-function: ("check-run-button", {
+    "theme": "light",
+    "color": "rgb(245, 245, 245)",
+    "background": "rgba(78, 139, 202, 0.2)",
+    "hover_color": "rgb(245, 245, 245)",
+    "hover_background": "rgb(78, 139, 202)",
+})