fix(beszel): add reliable live stats and filesystem UI (#6289)

packages/widgets/src/beszel/_shared/chart.spec.ts

@@ -0,0 +1,87 @@
+import { describe, expect, test } from "vitest";
+
+import type { BeszelSystemStatsRecord } from "@homarr/integrations/types";
+
+import { buildDiskChartData, padLiveTimeGrid } from "./chart";
+
+const record = (
+  created: string,
+  du: number,
+  efs: BeszelSystemStatsRecord["stats"]["efs"],
+): BeszelSystemStatsRecord => ({
+  id: created,
+  system: "system-1",
+  type: "1m",
+  created,
+  updated: created,
+  stats: {
+    cpu: 0,
+    m: 0,
+    mu: 0,
+    mp: 0,
+    mb: 0,
+    s: 0,
+    su: 0,
+    d: 938.8,
+    du,
+    dp: 51.15,
+    efs,
+  },
+});
+
+describe("buildDiskChartData", () => {
+  test("keeps root and extra filesystem usage in GiB without stacking or byte conversion", () => {
+    const data = buildDiskChartData(
+      [
+        record("2026-07-11T13:46:00.000Z", 455.81, {
+          sda: { d: 1906.8, du: 1656.45, r: 0, w: 0 },
+          sdb: { d: 5587.04, du: 3936.86, r: 0, w: 0 },
+          sdc: { d: 3724.18, du: 1589.84, r: 0, w: 0 },
+        }),
+      ],
+      ["sda", "sdb", "sdc"],
+      "Root",
+      "1h",
+    );
+
+    expect(data).toHaveLength(1);
+    expect(data[0]).toMatchObject({ Root: 455.81, sda: 1656.45, sdb: 3936.86, sdc: 1589.84 });
+  });
+
+  test("uses zero for a filesystem missing from an individual sample and orders historical records oldest first", () => {
+    const data = buildDiskChartData(
+      [
+        record("2026-07-11T13:47:00.000Z", 2, { sda: { d: 10, du: 4, r: 0, w: 0 } }),
+        record("2026-07-11T13:46:00.000Z", 1, undefined),
+      ],
+      ["sda"],
+      "Root",
+      "1h",
+    );
+
+    expect(data.map((point) => ({ Root: point.Root, sda: point.sda }))).toEqual([
+      { Root: 1, sda: 0 },
+      { Root: 2, sda: 4 },
+    ]);
+  });
+});
+
+describe("padLiveTimeGrid", () => {
+  test("keeps a fixed 60-second window with the newest sample at the right edge", () => {
+    const data = padLiveTimeGrid([{ time: "13:51:30", rawTime: "2026-07-11T13:51:30.217Z", CPU: 18.07 }]);
+
+    expect(data).toHaveLength(60);
+    expect(data[0]).not.toHaveProperty("CPU");
+    expect(data[58]).not.toHaveProperty("CPU");
+    expect(data[59]).toMatchObject({ CPU: 18.07 });
+  });
+
+  test("leaves null gaps for missing seconds instead of stretching existing points", () => {
+    const data = padLiveTimeGrid([
+      { time: "13:51:28", rawTime: "2026-07-11T13:51:28.000Z", CPU: 10 },
+      { time: "13:51:30", rawTime: "2026-07-11T13:51:30.000Z", CPU: 20 },
+    ]);
+
+    expect(data.slice(-3).map((point) => point.CPU)).toEqual([10, undefined, 20]);
+  });
+});