1 files changed, 37 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_eager_evaluation.js b/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_eager_evaluation.js
new file mode 100644
index 0000000000..9b4f500d55
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_eager_evaluation.js
@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests that the main expression is eagerly evaluated and its results are used in the autocomple popup
+
+"use strict";
+
+const TEST_URI = `data:text/html;charset=utf8,<!DOCTYPE html>Test autocompletion for expression variables<script>
+    var testObj = {
+      fun: () => ({ yay: "yay", yo: "yo", boo: "boo" })
+    };
+  </script>`;
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+  const { jsterm } = hud;
+  const { autocompletePopup } = jsterm;
+
+  const cases = [
+    { input: "testObj.fun().y", results: ["yay", "yo"] },
+    {
+      input: `Array.of(1,2,3).reduce((i, agg) => agg + i).toS`,
+      results: ["toString"],
+    },
+    { input: `1..toE`, results: ["toExponential"] },
+  ];
+
+  for (const test of cases) {
+    info(`Test: ${test.input}`);
+    await setInputValueForAutocompletion(hud, test.input);
+    ok(
+      hasExactPopupLabels(autocompletePopup, test.results),
+      "Autocomplete popup shows expected results: " +
+        getAutocompletePopupLabels(autocompletePopup).join("\n")
+    );
+  }
+});