mock AbortController for node 14

Author: mbostock

test/invalidation.js

@@ -0,0 +1,36 @@
+export default typeof AbortController === "undefined" ? mockit : it;
+
+function mockit(description, run) {
+  return it(description, withMock(run));
+}
+
+mockit.skip = (description, run) => {
+  return it.skip(description, withMock(run));
+};
+
+mockit.only = (description, run) => {
+  return it.only(description, withMock(run));
+};
+
+class MockAbortController {
+  abort() {
+    // mock noop for node 14
+  }
+}
+
+function withMock(run) {
+  return async () => {
+    global.AbortController = MockAbortController;
+    try {
+      return await run();
+    } finally {
+      delete global.AbortController;
+    }
+  };
+}
+
+export function invalidator() {
+  let invalidate;
+  const invalidation = new Promise((resolve) => (invalidate = resolve));
+  return [invalidation, invalidate];
+}

test/query-test.js

@@ -1,11 +1,6 @@
 import assert from "assert";
 import {__query} from "../src/table.js";
-
-function invalidator() {
-  let invalidate;
-  const invalidation = new Promise((resolve) => (invalidate = resolve));
-  return [invalidation, invalidate];
-}
+import it, {invalidator} from "./invalidation.js";
 
 describe("__query.sql", () => {
   it("evaluates using db.sql with the expected parameters", async () => {