runtime.dispose tests

test/runtime/dispose-test.js

@@ -0,0 +1,35 @@
+import {Runtime} from "@observablehq/runtime";
+import assert from "assert";
+import {sleep} from "../variable/valueof.js";
+
+describe("runtime.dispose", () => {
+  it("invalidates all variables", async () => {
+    const runtime = new Runtime();
+    const main = runtime.module();
+    const log = [];
+    main.variable(true).define(["invalidation"], async (invalidation) => {
+      await invalidation;
+      log.push("invalidation");
+    });
+    await sleep();
+    runtime.dispose();
+    await sleep();
+    assert.deepStrictEqual(log, ["invalidation"]);
+  });
+  it("terminates generators", async () => {
+    const runtime = new Runtime();
+    const main = runtime.module();
+    const log = [];
+    main.variable(true).define([], function* () {
+      try {
+        while (true) yield;
+      } finally {
+        log.push("return");
+      }
+    });
+    await sleep();
+    runtime.dispose();
+    await sleep();
+    assert.deepStrictEqual(log, ["return"]);
+  });
+});