Testing

pkg/kubelet/deviceplugin/BUILD

@@ -5,6 +5,7 @@ licenses(["notice"])
 load(
     "@io_bazel_rules_go//go:def.bzl",
     "go_library",
+    "go_test",
 )
 
 go_library(
@@ -12,6 +13,7 @@ go_library(
     srcs = [
         "endpoint.go",
         "manager.go",
+        "mock_device_plugin.go",
         "types.go",
         "utils.go",
     ],
@@ -36,3 +38,17 @@ filegroup(
     srcs = [":package-srcs"],
     tags = ["automanaged"],
 )
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "endpoint_test.go",
+        "manager_test.go",
+        "utils_test.go",
+    ],
+    library = ":go_default_library",
+    deps = [
+        "//pkg/kubelet/apis/deviceplugin/v1alpha1:go_default_library",
+        "//vendor/github.com/stretchr/testify/require:go_default_library",
+    ],
+)

pkg/kubelet/deviceplugin/endpoint_test.go

@@ -0,0 +1,125 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package deviceplugin
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1alpha1"
+)
+
+const (
+	socket = "/tmp/mock.sock"
+)
+
+func TestNewEndpoint(t *testing.T) {
+	devs := []*pluginapi.Device{
+		{ID: "ADeviceId", Health: pluginapi.Healthy},
+	}
+
+	p, e := esetup(t, devs, socket, "mock", func(n string, a, u, r []*pluginapi.Device) {})
+	defer ecleanup(t, p, e)
+}
+
+func TestList(t *testing.T) {
+	devs := []*pluginapi.Device{
+		{ID: "ADeviceId", Health: pluginapi.Healthy},
+	}
+
+	p, e := esetup(t, devs, socket, "mock", func(n string, a, u, r []*pluginapi.Device) {})
+	defer ecleanup(t, p, e)
+
+	_, err := e.list()
+	require.NoError(t, err)
+
+	e.mutex.Lock()
+	defer e.mutex.Unlock()
+
+	require.Len(t, e.devices, 1)
+
+	d, ok := e.devices[devs[0].ID]
+	require.True(t, ok)
+
+	require.Equal(t, d.ID, devs[0].ID)
+	require.Equal(t, d.Health, devs[0].Health)
+}
+
+func TestListAndWatch(t *testing.T) {
+	devs := []*pluginapi.Device{
+		{ID: "ADeviceId", Health: pluginapi.Healthy},
+		{ID: "AnotherDeviceId", Health: pluginapi.Healthy},
+	}
+
+	updated := []*pluginapi.Device{
+		{ID: "ADeviceId", Health: pluginapi.Unhealthy},
+		{ID: "AThirdDeviceId", Health: pluginapi.Healthy},
+	}
+
+	p, e := esetup(t, devs, socket, "mock", func(n string, a, u, r []*pluginapi.Device) {
+		require.Len(t, a, 1)
+		require.Len(t, u, 1)
+		require.Len(t, r, 1)
+
+		require.Equal(t, a[0].ID, updated[1].ID)
+
+		require.Equal(t, u[0].ID, updated[0].ID)
+		require.Equal(t, u[0].Health, updated[0].Health)
+
+		require.Equal(t, r[0].ID, devs[1].ID)
+	})
+	defer ecleanup(t, p, e)
+
+	s, err := e.list()
+	require.NoError(t, err)
+
+	go e.listAndWatch(s)
+	p.Update(updated)
+	time.Sleep(time.Second)
+
+	e.mutex.Lock()
+	defer e.mutex.Unlock()
+
+	require.Len(t, e.devices, 2)
+	for _, dref := range updated {
+		d, ok := e.devices[dref.ID]
+
+		require.True(t, ok)
+		require.Equal(t, d.ID, dref.ID)
+		require.Equal(t, d.Health, dref.Health)
+	}
+
+}
+
+func esetup(t *testing.T, devs []*pluginapi.Device, socket, resourceName string, callback MonitorCallback) (*MockDevicePlugin, *endpoint) {
+	p := NewMockDevicePlugin(devs, socket)
+
+	err := p.Start()
+	require.NoError(t, err)
+
+	e, err := newEndpoint(socket, "mock", func(n string, a, u, r []*pluginapi.Device) {})
+	require.NoError(t, err)
+
+	return p, e
+}
+
+func ecleanup(t *testing.T, p *MockDevicePlugin, e *endpoint) {
+	p.Stop()
+	e.stop()
+}

pkg/kubelet/deviceplugin/manager_test.go

@@ -0,0 +1,58 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package deviceplugin
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1alpha1"
+)
+
+const (
+	msocket = "/tmp/server.sock"
+)
+
+func TestNewManagerImpl(t *testing.T) {
+	_, err := NewManagerImpl("", func(n string, a, u, r []*pluginapi.Device) {})
+	require.Error(t, err)
+
+	_, err = NewManagerImpl(msocket, func(n string, a, u, r []*pluginapi.Device) {})
+	require.NoError(t, err)
+}
+
+func TestNewManagerImplStart(t *testing.T) {
+	_, err := NewManagerImpl(msocket, func(n string, a, u, r []*pluginapi.Device) {})
+	require.NoError(t, err)
+}
+
+func setup(t *testing.T, devs []*pluginapi.Device, pluginSocket, serverSocket string, callback MonitorCallback) (Manager, *MockDevicePlugin) {
+	m, err := NewManagerImpl(serverSocket, callback)
+	require.NoError(t, err)
+
+	p := NewMockDevicePlugin(devs, pluginSocket)
+	err = p.Start()
+	require.NoError(t, err)
+
+	return m, p
+}
+
+func cleanup(t *testing.T, m Manager, p *MockDevicePlugin) {
+	p.Stop()
+	m.Stop()
+}

pkg/kubelet/deviceplugin/mock_device_plugin.go

@@ -0,0 +1,123 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package deviceplugin
+
+import (
+	"log"
+	"net"
+	"os"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+
+	pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1alpha1"
+)
+
+// MockDevicePlugin is a mock device plugin
+type MockDevicePlugin struct {
+	devs   []*pluginapi.Device
+	socket string
+
+	stop   chan interface{}
+	update chan []*pluginapi.Device
+
+	server *grpc.Server
+}
+
+// NewMockDevicePlugin returns an initialized MockDevicePlugin
+func NewMockDevicePlugin(devs []*pluginapi.Device, socket string) *MockDevicePlugin {
+	return &MockDevicePlugin{
+		devs:   devs,
+		socket: socket,
+
+		stop:   make(chan interface{}),
+		update: make(chan []*pluginapi.Device),
+	}
+}
+
+// Start starts the gRPC server of the device plugin
+func (m *MockDevicePlugin) Start() error {
+	err := m.cleanup()
+	if err != nil {
+		return err
+	}
+
+	sock, err := net.Listen("unix", m.socket)
+	if err != nil {
+		return err
+	}
+
+	m.server = grpc.NewServer([]grpc.ServerOption{}...)
+	pluginapi.RegisterDevicePluginServer(m.server, m)
+
+	go m.server.Serve(sock)
+	log.Println("Starting to serve on", m.socket)
+
+	return nil
+}
+
+// Stop stops the gRPC server
+func (m *MockDevicePlugin) Stop() error {
+	m.server.Stop()
+
+	return m.cleanup()
+}
+
+// ListAndWatch lists devices and update that list according to the Update call
+func (m *MockDevicePlugin) ListAndWatch(e *pluginapi.Empty, s pluginapi.DevicePlugin_ListAndWatchServer) error {
+	log.Println("ListAndWatch")
+	var devs []*pluginapi.Device
+
+	for _, d := range m.devs {
+		devs = append(devs, &pluginapi.Device{
+			ID:     d.ID,
+			Health: pluginapi.Healthy,
+		})
+	}
+
+	s.Send(&pluginapi.ListAndWatchResponse{Devices: devs})
+
+	for {
+		select {
+		case <-m.stop:
+			return nil
+		case updated := <-m.update:
+			s.Send(&pluginapi.ListAndWatchResponse{Devices: updated})
+		}
+	}
+}
+
+// Update allows the device plugin to send new devices through ListAndWatch
+func (m *MockDevicePlugin) Update(devs []*pluginapi.Device) {
+	m.update <- devs
+}
+
+// Allocate does a mock allocation
+func (m *MockDevicePlugin) Allocate(ctx context.Context, r *pluginapi.AllocateRequest) (*pluginapi.AllocateResponse, error) {
+	log.Printf("Allocate, %+v", r)
+
+	var response pluginapi.AllocateResponse
+	return &response, nil
+}
+
+func (m *MockDevicePlugin) cleanup() error {
+	if err := os.Remove(m.socket); err != nil && !os.IsNotExist(err) {
+		return err
+	}
+
+	return nil
+}

pkg/kubelet/deviceplugin/utils_test.go

@@ -0,0 +1,54 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package deviceplugin
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1alpha1"
+)
+
+func TestCloneDevice(t *testing.T) {
+	d := CloneDevice(&pluginapi.Device{ID: "ADeviceId", Health: pluginapi.Healthy})
+
+	require.Equal(t, d.ID, "ADeviceId")
+	require.Equal(t, d.Health, pluginapi.Healthy)
+}
+
+func TestCopyDevices(t *testing.T) {
+	d := map[string]*pluginapi.Device{
+		"ADeviceId": {ID: "ADeviceId", Health: pluginapi.Healthy},
+	}
+
+	devs := copyDevices(d)
+	require.Len(t, devs, 1)
+}
+
+func TestGetDevice(t *testing.T) {
+	devs := []*pluginapi.Device{
+		{ID: "ADeviceId", Health: pluginapi.Healthy},
+	}
+
+	_, ok := GetDevice(&pluginapi.Device{ID: "AnotherDeviceId"}, devs)
+	require.False(t, ok)
+
+	d, ok := GetDevice(&pluginapi.Device{ID: "ADeviceId"}, devs)
+	require.True(t, ok)
+	require.Equal(t, d, devs[0])
+}