1 files changed, 66 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_css-compatibility-learn-more-link.js b/devtools/client/inspector/rules/test/browser_rules_css-compatibility-learn-more-link.js
new file mode 100644
index 0000000000..08e86e6202
--- /dev/null
+++ b/devtools/client/inspector/rules/test/browser_rules_css-compatibility-learn-more-link.js
@@ -0,0 +1,66 @@
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the Learn More link is displayed when possible,
+// and that it links to MDN or the spec if no MDN url is provided.
+
+const TEST_URI = `
+<style>
+  body {
+    user-select: none;
+    hyphenate-limit-chars: auto;
+    overflow-clip-box: padding-box;
+  }
+</style>
+<body>
+</body>`;
+
+const TEST_DATA_INITIAL = [
+  {
+    selector: "body",
+    rules: [
+      {},
+      {
+        "user-select": {
+          value: "none",
+          expected: COMPATIBILITY_TOOLTIP_MESSAGE.default,
+          // MDN url
+          expectedLearnMoreUrl:
+            "https://developer.mozilla.org/docs/Web/CSS/user-select?utm_source=devtools&utm_medium=inspector-css-compatibility&utm_campaign=default",
+        },
+        "hyphenate-limit-chars": {
+          value: "auto",
+          expected: COMPATIBILITY_TOOLTIP_MESSAGE.default,
+          // No MDN url, but a spec one
+          expectedLearnMoreUrl:
+            "https://drafts.csswg.org/css-text-4/#propdef-hyphenate-limit-chars",
+        },
+        "overflow-clip-box": {
+          expected: COMPATIBILITY_TOOLTIP_MESSAGE.default,
+          value: "padding-box",
+          // No MDN nor spec url
+          expectedLearnMoreUrl: null,
+        },
+      },
+    ],
+  },
+];
+
+add_task(async function () {
+  await pushPref(
+    "devtools.inspector.ruleview.inline-compatibility-warning.enabled",
+    true
+  );
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openRuleView();
+
+  // If the test fail because the properties used are no longer in the dataset, or they
+  // now have mdn/spec url although we expected them not to, uncomment the next line
+  // to get all the properties in the dataset that don't have a MDN url.
+  // logCssCompatDataPropertiesWithoutMDNUrl()
+
+  await runCSSCompatibilityTests(view, inspector, TEST_DATA_INITIAL);
+});