T019

packages/storage/tests/unit/compute.spec.ts

@@ -0,0 +1,66 @@
+import { describe, it, expect } from 'vitest';
+import {
+  computeNetScore,
+  clamp01,
+  clampRange,
+  luminanceFromNetScore,
+  addEntryToDay,
+  updateEntryInDay,
+  removeEntryFromDay,
+  replaceEntriesForDay,
+  recomputeDayNetScore
+} from '../../src/compute';
+
+import type { DayTile, HabitEntry } from '../../src/models';
+
+function day(entries: HabitEntry[] = []): DayTile {
+  return {
+    date: '2025-01-01',
+    mood: { hue: 180, intensity: 0.5 },
+    entries,
+    netScore: computeNetScore(entries)
+  };
+}
+
+describe('compute helpers', () => {
+  it('computes netScore correctly', () => {
+    const entries: HabitEntry[] = [
+      { id: '1', type: 'positive', habitId: 'h1', label: 'A', weight: 1, timestamp: new Date().toISOString() },
+      { id: '2', type: 'positive', habitId: 'h2', label: 'B', weight: 2, timestamp: new Date().toISOString() },
+      { id: '3', type: 'negative', habitId: 'h3', label: 'C', weight: 1, timestamp: new Date().toISOString() }
+    ];
+    expect(computeNetScore(entries)).toBe(1 + 2 - 1);
+  });
+
+  it('clamps values', () => {
+    expect(clampRange(5, 0, 3)).toBe(3);
+    expect(clampRange(-2, 0, 3)).toBe(0);
+    expect(clamp01(2)).toBe(1);
+    expect(clamp01(-1)).toBe(0);
+  });
+
+  it('maps luminance smoothly', () => {
+    const lo = luminanceFromNetScore(-100);
+    const hi = luminanceFromNetScore(100);
+    const mid = luminanceFromNetScore(0);
+    expect(lo).toBeGreaterThanOrEqual(0);
+    expect(hi).toBeLessThanOrEqual(1);
+    expect(hi).toBeGreaterThan(lo);
+    expect(Math.abs(mid - 0.5)).toBeLessThan(1e-6);
+  });
+
+  it('recomputes on CRUD operations', () => {
+    let d = day();
+    d = addEntryToDay(d, { id: 'e1', type: 'positive', habitId: 'h1', label: 'A', weight: 2, timestamp: new Date().toISOString() });
+    expect(d.netScore).toBe(2);
+    d = addEntryToDay(d, { id: 'e2', type: 'negative', habitId: 'h2', label: 'B', weight: 1, timestamp: new Date().toISOString() });
+    expect(d.netScore).toBe(1);
+    d = updateEntryInDay(d, { id: 'e2', type: 'negative', habitId: 'h2', label: 'B', weight: 2, timestamp: new Date().toISOString() });
+    expect(d.netScore).toBe(0);
+    d = removeEntryFromDay(d, 'e1');
+    expect(d.netScore).toBe(-2);
+    d = replaceEntriesForDay(d, []);
+    expect(d.netScore).toBe(0);
+    expect(recomputeDayNetScore(d)).toBe(0);
+  });
+});