1 files changed, 76 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_colorpicker-works-with-css-vars.js b/devtools/client/inspector/rules/test/browser_rules_colorpicker-works-with-css-vars.js
new file mode 100644
index 0000000000..6e28426b20
--- /dev/null
+++ b/devtools/client/inspector/rules/test/browser_rules_colorpicker-works-with-css-vars.js
@@ -0,0 +1,76 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests color pickers work with CSS variables.
+
+const TEST_URI = `
+  <style type="text/css">
+    :root {
+      --main-bg-color: coral;
+    }
+    body {
+      color: red;
+      background-color: var(--main-bg-color);
+      border: 1px solid var(--main-bg-color);
+    }
+  </style>
+  Testing the color picker tooltip with CSS variables!
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { view } = await openRuleView();
+
+  const propertiesToTest = ["color", "background-color", "border"];
+
+  for (const property of propertiesToTest) {
+    info(`Test that the colorpicker appears on swatch click for ${property}`);
+    await testColorPickerAppearsOnColorSwatchActivation(view, property);
+
+    info(
+      `Test that swatch is focusable and colorpicker can be activated with a keyboard for ${property}`
+    );
+    await testColorPickerAppearsOnColorSwatchActivation(view, property, true);
+  }
+});
+
+async function testColorPickerAppearsOnColorSwatchActivation(
+  view,
+  property,
+  withKeyboard = false
+) {
+  const value = (
+    await getRuleViewProperty(view, "body", property, { wait: true })
+  ).valueSpan;
+  const swatch = value.querySelector(".ruleview-colorswatch");
+
+  const cPicker = view.tooltips.getTooltip("colorPicker");
+  ok(cPicker, "The rule-view has an expected colorPicker widget");
+
+  const cPickerPanel = cPicker.tooltip.panel;
+  ok(cPickerPanel, "The XUL panel for the color picker exists");
+
+  const onColorPickerReady = cPicker.once("ready");
+  if (withKeyboard) {
+    // Focus on the property value span
+    const doc = value.ownerDocument;
+    value.focus();
+
+    // Tab to focus on the color swatch
+    EventUtils.sendKey("Tab");
+    is(doc.activeElement, swatch, "Swatch successfully receives focus.");
+
+    // Press enter on the swatch to simulate click and open color picker
+    EventUtils.sendKey("Return");
+  } else {
+    swatch.click();
+  }
+  await onColorPickerReady;
+
+  info("The color picker was displayed");
+  ok(!inplaceEditor(swatch.parentNode), "The inplace editor wasn't displayed");
+
+  await hideTooltipAndWaitForRuleViewChanged(cPicker, view);
+}