test: add tests for printCronList defensive jobId/id handling

Tests cover:
- Standard id property
- jobId fallback (Gateway API variant)
- jobId preferred over id when both present
- No crash when both id and jobId are missing
- Empty job list and multiple jobs
- parseDurationMs unit tests

src/cli/cron-cli/shared.test.ts

@@ -0,0 +1,105 @@
+import { describe, expect, it, vi } from "vitest";
+import type { CronJob } from "../../cron/types.js";
+import { parseDurationMs, printCronList } from "./shared.js";
+
+// Minimal CronJob factory
+function makeCronJob(overrides: Partial<CronJob> & Record<string, unknown> = {}): CronJob {
+  return {
+    id: "test-id-000",
+    name: "test-job",
+    enabled: true,
+    createdAtMs: Date.now(),
+    updatedAtMs: Date.now(),
+    schedule: { kind: "every", everyMs: 60_000 },
+    sessionTarget: "isolated",
+    wakeMode: "prompt",
+    payload: { prompt: "hello" },
+    state: {},
+    ...overrides,
+  } as CronJob;
+}
+
+describe("printCronList", () => {
+  const captureLog = () => {
+    const lines: string[] = [];
+    const runtime = {
+      log: vi.fn((msg: string) => lines.push(msg)),
+      error: vi.fn(),
+    };
+    return { lines, runtime };
+  };
+
+  it("prints 'No cron jobs.' for empty list", () => {
+    const { runtime } = captureLog();
+    printCronList([], runtime as never);
+    expect(runtime.log).toHaveBeenCalledWith("No cron jobs.");
+  });
+
+  it("handles job with standard id property", () => {
+    const { lines, runtime } = captureLog();
+    const job = makeCronJob({ id: "abc-123" });
+    printCronList([job], runtime as never);
+    // Header + 1 job line
+    expect(lines).toHaveLength(2);
+    expect(lines[1]).toContain("abc-123");
+  });
+
+  it("handles job with jobId instead of id (Gateway API variant)", () => {
+    const { lines, runtime } = captureLog();
+    // Simulate Gateway returning jobId instead of id
+    const job = makeCronJob({ id: undefined as unknown as string, jobId: "gateway-456" } as never);
+    printCronList([job], runtime as never);
+    expect(lines).toHaveLength(2);
+    expect(lines[1]).toContain("gateway-456");
+  });
+
+  it("prefers jobId over id when both are present", () => {
+    const { lines, runtime } = captureLog();
+    const job = makeCronJob({ id: "fallback-id", jobId: "preferred-jobid" } as never);
+    printCronList([job], runtime as never);
+    expect(lines).toHaveLength(2);
+    expect(lines[1]).toContain("preferred-jobid");
+    expect(lines[1]).not.toContain("fallback-id");
+  });
+
+  it("does not crash when both id and jobId are missing", () => {
+    const { lines, runtime } = captureLog();
+    const job = makeCronJob({ id: undefined as unknown as string });
+    printCronList([job], runtime as never);
+    // Should not throw and should still print a line
+    expect(lines).toHaveLength(2);
+  });
+
+  it("prints multiple jobs", () => {
+    const { lines, runtime } = captureLog();
+    const jobs = [
+      makeCronJob({ id: "job-1", name: "first" }),
+      makeCronJob({ id: "job-2", name: "second" }),
+    ];
+    printCronList(jobs, runtime as never);
+    // Header + 2 job lines
+    expect(lines).toHaveLength(3);
+  });
+});
+
+describe("parseDurationMs", () => {
+  it.each([
+    ["1s", 1000],
+    ["5m", 300_000],
+    ["2h", 7_200_000],
+    ["1d", 86_400_000],
+    ["500ms", 500],
+    ["1.5s", 1500],
+  ])("parses %s → %d", (input, expected) => {
+    expect(parseDurationMs(input)).toBe(expected);
+  });
+
+  it("returns null for empty string", () => {
+    expect(parseDurationMs("")).toBeNull();
+  });
+
+  it("returns null for invalid input", () => {
+    expect(parseDurationMs("abc")).toBeNull();
+    expect(parseDurationMs("-5s")).toBeNull();
+  });
+});