ai fixes

apps/web/src/lib/teacher/extract-text.test.ts

@@ -0,0 +1,46 @@
+import { describe, it, expect } from "vitest";
+import {
+  extractText,
+  extractStringList,
+  isObjectObject,
+  normalizeQuizAnswer,
+} from "./extract-text";
+
+describe("extractText", () => {
+  it("returns empty for object without known fields instead of [object Object]", () => {
+    expect(extractText({ foo: "bar" })).toBe("");
+    expect(extractText({ task: "Research DNS" })).toBe("Research DNS");
+  });
+
+  it("extracts nested assignment objects", () => {
+    expect(
+      extractText({
+        task: "Write a summary",
+        steps: ["Open docs", "Take notes"],
+      })
+    ).toContain("Write a summary");
+  });
+});
+
+describe("extractStringList", () => {
+  it("maps object steps to strings", () => {
+    expect(
+      extractStringList([{ step: "Read chapter 1" }, "Search Wikipedia"])
+    ).toEqual(["Read chapter 1", "Search Wikipedia"]);
+  });
+});
+
+describe("normalizeQuizAnswer", () => {
+  it("maps letter B to index 1", () => {
+    const result = normalizeQuizAnswer("B", ["A opt", "B opt", "C opt"]);
+    expect(result.answerIndex).toBe(1);
+    expect(result.answerText).toBe("B opt");
+  });
+});
+
+describe("isObjectObject", () => {
+  it("detects invalid coerced strings", () => {
+    expect(isObjectObject("[object Object]")).toBe(true);
+    expect(isObjectObject("real text")).toBe(false);
+  });
+});