/**
* InsightsManager Tests
*
* Tests for the business insights singleton manager.
* Target: 22% → 90%+ coverage
*/
import { describe, it, expect, beforeEach } from "vitest";
import { insightsManager } from "../../src/utils/insightsManager.js";
describe("InsightsManager", () => {
beforeEach(() => {
// Clear insights before each test
insightsManager.clear();
});
describe("append", () => {
it("should append a valid insight", () => {
insightsManager.append("Revenue increased 15% this quarter");
expect(insightsManager.count()).toBe(1);
expect(insightsManager.getAll()).toContain(
"Revenue increased 15% this quarter",
);
});
it("should trim whitespace from insights", () => {
insightsManager.append(" Leading and trailing spaces ");
const insights = insightsManager.getAll();
expect(insights[0]).toBe("Leading and trailing spaces");
});
it("should ignore empty strings", () => {
insightsManager.append("");
expect(insightsManager.count()).toBe(0);
});
it("should ignore whitespace-only strings", () => {
insightsManager.append(" ");
expect(insightsManager.count()).toBe(0);
});
it("should append multiple insights", () => {
insightsManager.append("Insight 1");
insightsManager.append("Insight 2");
insightsManager.append("Insight 3");
expect(insightsManager.count()).toBe(3);
});
});
describe("getAll", () => {
it("should return empty array when no insights", () => {
expect(insightsManager.getAll()).toEqual([]);
});
it("should return copy of insights (not reference)", () => {
insightsManager.append("Test insight");
const insights1 = insightsManager.getAll();
const insights2 = insightsManager.getAll();
expect(insights1).not.toBe(insights2);
expect(insights1).toEqual(insights2);
});
it("should preserve order of insights", () => {
insightsManager.append("First");
insightsManager.append("Second");
insightsManager.append("Third");
expect(insightsManager.getAll()).toEqual(["First", "Second", "Third"]);
});
});
describe("count", () => {
it("should return 0 for empty manager", () => {
expect(insightsManager.count()).toBe(0);
});
it("should return correct count", () => {
insightsManager.append("One");
insightsManager.append("Two");
expect(insightsManager.count()).toBe(2);
});
});
describe("clear", () => {
it("should remove all insights", () => {
insightsManager.append("Insight 1");
insightsManager.append("Insight 2");
expect(insightsManager.count()).toBe(2);
insightsManager.clear();
expect(insightsManager.count()).toBe(0);
expect(insightsManager.getAll()).toEqual([]);
});
it("should work on already empty manager", () => {
insightsManager.clear();
expect(insightsManager.count()).toBe(0);
});
});
describe("synthesizeMemo", () => {
it("should return default message when no insights", () => {
const memo = insightsManager.synthesizeMemo();
expect(memo).toBe("No business insights have been discovered yet.");
});
it("should format single insight without summary", () => {
insightsManager.append("Customer retention improved by 20%");
const memo = insightsManager.synthesizeMemo();
expect(memo).toContain("📊 Business Intelligence Memo 📊");
expect(memo).toContain("Key Insights Discovered:");
expect(memo).toContain("- Customer retention improved by 20%");
// Single insight should NOT have summary
expect(memo).not.toContain("Summary:");
});
it("should include summary for multiple insights", () => {
insightsManager.append("Revenue up 15%");
insightsManager.append("Customer base grew 10%");
const memo = insightsManager.synthesizeMemo();
expect(memo).toContain("Summary:");
expect(memo).toContain("2 key business insights");
});
it("should format all insights as bullet points", () => {
insightsManager.append("Insight A");
insightsManager.append("Insight B");
insightsManager.append("Insight C");
const memo = insightsManager.synthesizeMemo();
expect(memo).toContain("- Insight A");
expect(memo).toContain("- Insight B");
expect(memo).toContain("- Insight C");
});
});
});
