added unit tests for MiniCache

test/MiniCache.test.js

@@ -0,0 +1,107 @@
+import { MiniCache } from '../build/node.js'
+import { generateEntries } from './utilities'
+
+test('1. write, read and check for entries', async () => {
+  const cache = new MiniCache({
+    maxAge: 100 // 100 seconds
+  })
+
+  // GENERATE 2 ENTRIES
+  await generateEntries(cache, 2)
+
+  // TEST OUT SOME DIFFERENT TYPES
+  const keyOfDifferentEntry = ['some', 2, 'shitty array']
+  const valueOfDifferentEntry = { keyOne: 'hello', keyTwo: 'world' }
+
+  await cache.write(keyOfDifferentEntry, valueOfDifferentEntry)
+
+  expect(await cache.has(1)).toBe(true)
+  expect(await cache.has(keyOfDifferentEntry)).toBe(true)
+  expect(await cache.has(3)).toBe(false)
+
+  setTimeout(async () => {
+    await cache.write('third', 69)
+
+    expect(await cache.get(1)).toBe(null)
+    expect(await cache.get(keyOfDifferentEntry)).toBe(null)
+
+    expect(await cache.has(1)).toBe(false)
+    expect(await cache.has(keyOfDifferentEntry)).toBe(false)
+    expect(await cache.has('third')).toBe(true)
+
+    expect(await cache.get('third')).toBe(69)
+  }, 101 * 1000)
+})
+
+test('2. grab and steal entries', async () => {
+  const cache = new MiniCache({
+    maxAge: 100 // 100 seconds
+  })
+
+  // GENERATE 2 ENTRIES
+  await generateEntries(cache, 2)
+
+  // GRAB A SINGLE ENTRY
+  expect(await cache.grab(1)).toBe('smth1')
+
+  // GRAB A NON-EXISTENT ENTRY
+  expect(await cache.grab(99)).toBe(null)
+
+  // STEAL A SINGLE ENTRY
+  expect(await cache.has(1)).toBe(true)
+  expect(await cache.steal(1)).toBe('smth1')
+  expect(await cache.has(1)).toBe(false)
+
+  // STEAL A NON-EXISTENT ENTRY
+  expect(await cache.steal(99)).toBe(null)
+})
+
+test('3. update and purge entries', async () => {
+  const cache = new MiniCache()
+
+  // GENERATE 1 ENTRY
+  await generateEntries(cache, 1)
+
+  // UPDATE A SINGLE ENTRY
+  expect(await cache.get(1)).toBe('smth1')
+  await cache.update(1, 'smth else')
+  expect(await cache.get(1)).toBe('smth else')
+
+  // UPDATE A NON-EXISTENT ENTRY
+  await cache.update(99, 'lol')
+})
+
+test('5. prune cache', async () => {
+  const cache = new MiniCache()
+
+  // GENERATE 6 ENTRIES
+  await generateEntries(cache, 6)
+  expect(await cache.get(1)).toBe('smth1')
+  expect(await cache.get(2)).toBe('smth2')
+  expect(await cache.get(3)).toBe('smth3')
+  expect(await cache.get(4)).toBe('smth4')
+  expect(await cache.get(5)).toBe('smth5')
+  expect(await cache.get(6)).toBe('smth6')
+
+  setTimeout(async () => {
+    // SHOULD RESIST THE PRUNING
+    await cache.write(7, 'smth7')
+
+    // PRUNE CACHE
+    await cache.prune()
+
+    // ONLY THE ENTRY WITH KEY '7' SHOULD BE LEFT
+    expect(await cache.has(1)).toBe(false)
+    expect(await cache.has(2)).toBe(false)
+    expect(await cache.has(3)).toBe(false)
+    expect(await cache.has(4)).toBe(false)
+    expect(await cache.has(5)).toBe(false)
+    expect(await cache.has(6)).toBe(false)
+    expect(await cache.has(7)).toBe(true)
+  }, 101 * 1000)
+})
+
+test('6. get consumed memory', async () => {
+  const cache = new MiniCache()
+  expect(typeof (await cache.getConsumedMemory())).toBe('number')
+})