feathers/packages/commons/test/utils.test.ts

/* tslint:disable:no-unused-expression */
import { strict as assert } from 'assert'
import { _, stripSlashes, isPromise, createSymbol } from '../src'

describe('@feathersjs/commons utils', () => {
  it('stripSlashes', () => {
    assert.equal(stripSlashes('some/thing'), 'some/thing')
    assert.equal(stripSlashes('/some/thing'), 'some/thing')
    assert.equal(stripSlashes('some/thing/'), 'some/thing')
    assert.equal(stripSlashes('/some/thing/'), 'some/thing')
    assert.equal(stripSlashes('//some/thing/'), 'some/thing')
    assert.equal(stripSlashes('//some//thing////'), 'some//thing')
  })

  it('isPromise', () => {
    assert.equal(isPromise(Promise.resolve()), true)
    assert.ok(
      isPromise({
        then() {
          return true
        }
      })
    )
    assert.equal(isPromise(null), false)
  })

  it('createSymbol', () => {
    assert.equal(typeof createSymbol('a test'), 'symbol')
  })

  describe('_', () => {
    it('isObject', () => {
      assert.equal(_.isObject({}), true)
      assert.equal(_.isObject([]), false)
      assert.equal(_.isObject(null), false)
    })

    it('isObjectOrArray', () => {
      assert.equal(_.isObjectOrArray({}), true)
      assert.equal(_.isObjectOrArray([]), true)
      assert.equal(_.isObjectOrArray(null), false)
    })

    it('each', () => {
      _.each({ hi: 'there' }, (value, key) => {
        assert.equal(key, 'hi')
        assert.equal(value, 'there')
      })

      _.each(['hi'], (value, key) => {
        assert.equal(key, 0)
        assert.equal(value, 'hi')
      })

      _.each('moo', () => assert.fail('Should never get here'))
    })

    it('some', () => {
      assert.ok(_.some(['a', 'b'], (current) => current === 'a'))
      assert.ok(!_.some(['a', 'b'], (current) => current === 'c'))
    })

    it('every', () => {
      assert.ok(_.every(['a', 'a'], (current) => current === 'a'))
      assert.ok(!_.every(['a', 'b'], (current) => current === 'a'))
    })

    it('keys', () => {
      const data = { hi: 'there', name: 'David' }
      assert.deepEqual(_.keys(data), ['hi', 'name'])
    })

    it('values', () => {
      const data = { hi: 'there', name: 'David' }
      assert.deepEqual(_.values(data), ['there', 'David'])
    })

    it('isMatch', () => {
      assert.ok(
        _.isMatch(
          {
            test: 'me',
            hi: 'you',
            more: true
          },
          {
            test: 'me',
            hi: 'you'
          }
        )
      )

      assert.ok(
        !_.isMatch(
          {
            test: 'me',
            hi: 'you',
            more: true
          },
          {
            test: 'me',
            hi: 'there'
          }
        )
      )
    })

    it('isEmpty', () => {
      assert.ok(_.isEmpty({}))
      assert.ok(!_.isEmpty({ name: 'David' }))
    })

    it('extend', () => {
      assert.deepEqual(_.extend({ hi: 'there' }, { name: 'david' }), {
        hi: 'there',
        name: 'david'
      })
    })

    it('omit', () => {
      assert.deepEqual(
        _.omit(
          {
            name: 'David',
            first: 1,
            second: 2
          },
          'first',
          'second'
        ),
        {
          name: 'David'
        }
      )
    })

    it('pick', () => {
      assert.deepEqual(
        _.pick(
          {
            name: 'David',
            first: 1,
            second: 2
          },
          'first',
          'second'
        ),
        {
          first: 1,
          second: 2
        }
      )

      assert.deepEqual(
        _.pick(
          {
            name: 'David',
            first: 1
          },
          'first',
          'second'
        ),
        {
          first: 1
        }
      )
    })

    it('merge', () => {
      assert.deepEqual(_.merge({ hi: 'there' }, { name: 'david' }), {
        hi: 'there',
        name: 'david'
      })

      assert.deepEqual(
        _.merge(
          {},
          {
            name: 'david',
            nested: { obj: true }
          }
        ),
        {
          name: 'david',
          nested: { obj: true }
        }
      )

      assert.deepEqual(_.merge({ name: 'david' }, {}), {
        name: 'david'
      })

      assert.deepEqual(
        _.merge(
          {
            hi: 'there',
            my: {
              name: { is: 'david' },
              number: { is: 1 }
            }
          },
          { my: { name: { is: 'eric' } } }
        ),
        {
          hi: 'there',
          my: {
            number: { is: 1 },
            name: { is: 'eric' }
          }
        }
      )

      assert.equal(_.merge('hello', {}), 'hello')
    })
  })
})