Golang FileSystem.WriteFile方法代碼示例

			dirProvider := boshdirs.NewProvider(basePath)
			runner = boshsys.NewExecCmdRunner(logger)
			jobSupervisor = NewWindowsJobSupervisor(runner, dirProvider, fs, logger, jobFailuresServerPort,
				make(chan bool), DefaultMachineIP)
			if err := jobSupervisor.RemoveAllJobs(); err != nil {
				return "", err
			}
			processConfigContents, err := json.Marshal(configContents)
			if err != nil {
				return "", err
			}

			jobDir, err = fs.TempDir("testWindowsJobSupervisor")
			processConfigPath = filepath.Join(jobDir, "monit")

			err = fs.WriteFile(processConfigPath, processConfigContents)
			return processConfigPath, err
		}

		AddJob := func(jobName string) (WindowsProcessConfig, error) {
			conf, ok := testWindowsConfigs(jobName)
			if !ok {
				return conf, fmt.Errorf("Invalid Windows Config Process name: %s", jobName)
			}
			confPath, err := WriteJobConfig(conf)
			if err != nil {
				return conf, err
			}
			return conf, jobSupervisor.AddJob(jobName, 0, confPath)
		}

		fs           boshsys.FileSystem
		diskSettings boshsettings.DiskSettings
		resolver     DevicePathResolver
	)

	BeforeEach(func() {
		fs = fakesys.NewFakeFileSystem()
		resolver = NewMappedDevicePathResolver(time.Second, fs)
		diskSettings = boshsettings.DiskSettings{
			Path: "/dev/sda",
		}
	})

	Context("when a matching /dev/xvdX device is found", func() {
		BeforeEach(func() {
			fs.WriteFile("/dev/xvda", []byte{})
			fs.WriteFile("/dev/vda", []byte{})
			fs.WriteFile("/dev/sda", []byte{})
		})

		It("returns the match", func() {
			realPath, timedOut, err := resolver.GetRealDevicePath(diskSettings)
			Expect(err).NotTo(HaveOccurred())
			Expect(timedOut).To(BeFalse())
			Expect(realPath).To(Equal("/dev/xvda"))
		})
	})

	Context("when a matching /dev/vdX device is found", func() {
		BeforeEach(func() {
			fs.WriteFile("/dev/vda", []byte{})

func describeDummyPlatform() {
	var (
		platform           Platform
		collector          boshstats.Collector
		fs                 boshsys.FileSystem
		cmdRunner          boshsys.CmdRunner
		dirProvider        boshdirs.Provider
		devicePathResolver boshdpresolv.DevicePathResolver
		logger             boshlog.Logger
	)

	BeforeEach(func() {
		collector = &fakestats.FakeCollector{}
		fs = fakesys.NewFakeFileSystem()
		cmdRunner = fakesys.NewFakeCmdRunner()
		dirProvider = boshdirs.NewProvider("/fake-dir")
		devicePathResolver = fakedpresolv.NewFakeDevicePathResolver()
		logger = boshlog.NewLogger(boshlog.LevelNone)
	})

	JustBeforeEach(func() {
		platform = NewDummyPlatform(
			collector,
			fs,
			cmdRunner,
			dirProvider,
			devicePathResolver,
			logger,
		)
	})

	Describe("GetDefaultNetwork", func() {
		It("returns the contents of dummy-defaults-network-settings.json since that's what the dummy cpi writes", func() {
			settingsFilePath := "/fake-dir/bosh/dummy-default-network-settings.json"
			fs.WriteFileString(settingsFilePath, `{"IP": "1.2.3.4"}`)

			network, err := platform.GetDefaultNetwork()
			Expect(err).NotTo(HaveOccurred())

			Expect(network.IP).To(Equal("1.2.3.4"))
		})
	})

	Describe("GetCertManager", func() {
		It("returs a dummy cert manager", func() {
			certManager := platform.GetCertManager()

			Expect(certManager.UpdateCertificates("")).Should(BeNil())
		})
	})

	Describe("UnmountPersistentDisk", func() {
		Context("when there are two mounted persistent disks in the mounts json", func() {
			BeforeEach(func() {

				var mounts []mount
				mounts = append(mounts, mount{MountDir: "dir1", DiskCid: "cid1"})
				mounts = append(mounts, mount{MountDir: "dir2", DiskCid: "cid2"})
				mountsJSON, _ := json.Marshal(mounts)

				mountsPath := path.Join(dirProvider.BoshDir(), "mounts.json")
				fs.WriteFile(mountsPath, mountsJSON)
			})

			It("removes one of the disks from the mounts json", func() {
				unmounted, err := platform.UnmountPersistentDisk(settings.DiskSettings{ID: "cid1"})
				Expect(err).NotTo(HaveOccurred())
				Expect(unmounted).To(Equal(true))

				Expect(platform.IsMountPoint("dir1")).To(Equal(false))
				Expect(platform.IsMountPoint("dir2")).To(Equal(true))
			})
		})
	})
}