helpers tests

tests/unit/helpers.spec.js

@@ -0,0 +1,88 @@
+/* global describe it expect */
+const { isArray, isString, isObject, getKey, createRecord, indexForKey } = require('../../src/helpers')
+
+function random (n) {
+  return 0 | (Math.random() * n) + 1
+}
+
+function makeSnap (key, val) {
+  return {
+    key () { return key },
+    val () { return val }
+  }
+}
+
+describe('Type helpers', () => {
+  it('isArray', () => {
+    const A = []
+    const B = [0, 1, 2]
+    const C = '0 1 2'
+    expect(isArray(A)).toBe(true)
+    expect(isArray(B)).toBe(true)
+    expect(isArray(C)).toBe(false)
+  })
+
+  it('isString', () => {
+    const A = ''
+    const B = '0 1 2'
+    const C = [0, 1, 2]
+    expect(isString(A)).toBe(true)
+    expect(isString(B)).toBe(true)
+    expect(isString(C)).toBe(false)
+  })
+
+  it('isObject', () => {
+    const A = {}
+    const B = { foo: 'bar' }
+    const C = 'foobar'
+    expect(isObject(A)).toBe(true)
+    expect(isObject(B)).toBe(true)
+    expect(isObject(C)).toBe(false)
+  })
+})
+
+describe('Helpers', () => {
+  it('getKey', () => {
+    const key = random(100)
+    const A = { key }
+    const B = { key () { return key } }
+    expect(getKey(A)).toBe(key)
+    expect(getKey(B)).toBe(key)
+  })
+
+  it('createRecord simple', () => {
+    const key = '-' + random(100)
+    const val = random(100)
+    const snapshot = makeSnap(key, val)
+    const record = createRecord(snapshot)
+    expect(record).toEqual({
+      '.key': key,
+      '.value': val
+    })
+  })
+
+  it('createRecord object', () => {
+    const key = '-' + random(100)
+    const val = random(100)
+    const snapshot = makeSnap(key, { val, foo: 'bar' })
+    const record = createRecord(snapshot)
+    expect(record).toEqual({
+      val,
+      foo: 'bar',
+      '.key': key
+    })
+  })
+
+  it('indexForKey', () => {
+    const list = []
+    const len = random(20)
+    for (let i = 0; i < len; i++) {
+      list.push(createRecord(makeSnap(random(100), random(10))))
+    }
+    const index = random(len) - 1
+    const record = list[index]
+    const key = record['.key']
+    expect(indexForKey(list, key)).toBe(index)
+    expect(indexForKey(list, 'toto')).toBe(-1)
+  })
+})

tests/unit/jasmine.json

@@ -1,5 +1,5 @@
 {
-  "spec_dir": "test/unit",
+  "spec_dir": "tests/unit",
   "spec_files": [
     "**/*.spec.js"
   ]