1 files changed, 55 insertions, 0 deletions
diff --git a/test/bun.js/readline_promises.node.test.ts b/test/bun.js/readline_promises.node.test.ts
new file mode 100644
index 000000000..eadd289e3
--- /dev/null
+++ b/test/bun.js/readline_promises.node.test.ts
@@ -0,0 +1,55 @@
+import { describe, it } from "bun:test";
+import readlinePromises from "node:readline/promises";
+import { EventEmitter } from "node:events";
+import {
+  createDoneDotAll,
+  createCallCheckCtx,
+  assert,
+} from "./node-test-helpers";
+
+// ----------------------------------------------------------------------------
+// Helpers
+// ----------------------------------------------------------------------------
+
+class FakeInput extends EventEmitter {
+  output = "";
+  resume() {}
+  pause() {}
+  write(data) {
+    this.output += data;
+  }
+  end() {}
+  reset() {
+    this.output = "";
+  }
+}
+
+// ----------------------------------------------------------------------------
+// Tests
+// ----------------------------------------------------------------------------
+
+describe("readline/promises.createInterface()", () => {
+  it("should throw an error when failed completion", (done) => {
+    const createDone = createDoneDotAll(done);
+    const { mustCall, mustNotCall } = createCallCheckCtx(createDone());
+
+    const fi = new FakeInput();
+    const rli = new readlinePromises.Interface({
+      input: fi,
+      output: fi,
+      terminal: true,
+      completer: mustCall(() => Promise.reject(new Error("message"))),
+    });
+
+    rli.on("line", mustNotCall());
+    fi.emit("data", "\t");
+    const outCheckDone = createDone();
+    process.nextTick(() => {
+      console.log("output", fi.output);
+      assert.match(fi.output, /^Tab completion error/);
+      fi.reset();
+      outCheckDone();
+    });
+    rli.close();
+  });
+});