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Текущая директория: /opt/BitGoJS/node_modules/proxyquire/test
Просмотр файла: proxyquire-cache.js

'use strict'

var assert = require('assert')

describe('Proxyquire', function () {
  describe('load()', function () {
    it('defaults to preserving the cache', function () {
      var original = require('./samples/foo')
      original.state = 'cached'

      var proxyquire = require('..')
      proxyquire('./samples/foo', { path: { } })

      var foo = require('./samples/foo')
      assert.strictEqual('cached', foo.state)
      assert.strictEqual(foo, original)
    })

    it('does not pollute the cache when module is proxyquired before it is loaded', function () {
      var proxyquire = require('..')

      proxyquire('./samples/no-call-thru-test', { './required': false })
      var original = require('./samples/no-call-thru-test')

      assert.strictEqual(original.original, true)
    })
  })

  describe('preserveCache()', function () {
    it('returns a reference to itself, so it can be chained', function () {
      var proxyquire = require('..')
      assert.strictEqual(proxyquire.preserveCache(), proxyquire)
    })

    it('has Proxyquire restore the cache for the module', function () {
      var original = require('./samples/foo')
      original.state = 'cached'

      var proxyquire = require('..')
      proxyquire.preserveCache()
      proxyquire.load('./samples/foo', { path: { } })

      var foo = require('./samples/foo')
      assert.strictEqual('cached', foo.state)
      assert.strictEqual(foo, original)
    })

    it('allows Singletons to function properly', function () {
      var original = require('./samples/foo-singleton').getInstance()

      var proxyquire = require('..')
      proxyquire.preserveCache()
      proxyquire.load('./samples/foo-singleton', { path: { } }).getInstance()

      var fooSingleton = require('./samples/foo-singleton').getInstance()
      assert.strictEqual(fooSingleton, original)
    })
  })

  describe('noPreserveCache()', function () {
    it('returns a reference to itself, so it can be chained', function () {
      var proxyquire = require('..')
      assert.strictEqual(proxyquire.noPreserveCache(), proxyquire)
    })

    it('forces subsequent requires to reload the proxied module', function () {
      var original = require('./samples/foo')
      original.state = 'cached'

      var proxyquire = require('..')
      proxyquire.load('./samples/foo', { path: { } })

      var cacheFoo = require('./samples/foo')
      assert.strictEqual('cached', cacheFoo.state)
      assert.strictEqual(cacheFoo, original)

      proxyquire.noPreserveCache()
      proxyquire.load('./samples/foo', { path: { } })
      var foo = require('./samples/foo')
      assert.strictEqual('', foo.state)
      assert.notStrictEqual(foo, original)
    })

    it('deletes the require.cache for the module being stubbed', function () {
      var proxyquire = require('..').noPreserveCache()

      proxyquire.load('./samples/foo', { path: { } })
      assert.strictEqual(undefined, require.cache[require.resolve('./samples/foo')])
    })

    it('deletes the require.cache for the stubs', function () {
      var proxyquire = require('..').noPreserveCache()

      var bar = {}
      var foo = proxyquire.load('./samples/cache/foo', { './bar': bar })
      bar.f.g = function () { return 'a' }
      bar.h = function () { return 'a' }

      assert.strictEqual(foo.bar.f.g(), 'a')
      assert.strictEqual(foo.bar.h(), 'a')

      foo = proxyquire.load('./samples/cache/foo', { './bar': {} })
      assert.strictEqual(foo.bar.h(), 'h')
      assert.strictEqual(foo.bar.f.g(), 'g')

      assert.strictEqual(undefined, require.cache[require.resolve('./samples/cache/foo')])
      assert.strictEqual(undefined, require.cache[require.resolve('./samples/cache/bar')])
    })

    it('silences errors when stub lookups fail', function () {
      var proxyquire = require('..').noPreserveCache()

      assert.doesNotThrow(function () {
        proxyquire.load('./samples/cache/foo', { './does-not-exist': {} })
      })
    })
  })
})
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