virtcontainers: Initial import

This is a virtcontainers 1.0.8 import into Kata Containers runtime.

virtcontainers is a Go library designed to manage hardware virtualized
pods and containers. It is the core Clear Containers framework and will
become the core Kata Containers framework, as discussed at
https://github.com/kata-containers/runtime/issues/33

Some more more pointers:

virtcontainers README, including some design and architecure notes:
https://github.com/containers/virtcontainers/blob/master/README.md

virtcontainers 1.0 API:
https://github.com/containers/virtcontainers/blob/master/documentation/api/1.0/api.md

Fixes #40

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

virtcontainers/cc_proxy_test.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2017 Intel Corporation
+//
+// 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 virtcontainers
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCCProxyStart(t *testing.T) {
+	assert := assert.New(t)
+
+	tmpdir, err := ioutil.TempDir("", "")
+	assert.NoError(err)
+	defer os.RemoveAll(tmpdir)
+
+	proxy := &ccProxy{}
+
+	type testData struct {
+		pod         Pod
+		expectedURI string
+		expectError bool
+	}
+
+	invalidPath := filepath.Join(tmpdir, "enoent")
+	expectedSocketPath := filepath.Join(runStoragePath, testPodID, "proxy.sock")
+	expectedURI := fmt.Sprintf("unix://%s", expectedSocketPath)
+
+	data := []testData{
+		{Pod{}, "", true},
+		{
+			Pod{
+				config: &PodConfig{
+					ProxyType: "invalid",
+				},
+			}, "", true,
+		},
+		{
+			Pod{
+				config: &PodConfig{
+					ProxyType:   CCProxyType,
+					ProxyConfig: ProxyConfig{
+					// invalid - no path
+					},
+				},
+			}, "", true,
+		},
+		{
+			Pod{
+				config: &PodConfig{
+					ProxyType: CCProxyType,
+					ProxyConfig: ProxyConfig{
+						Path: invalidPath,
+					},
+				},
+			}, "", true,
+		},
+		{
+			Pod{
+				id: testPodID,
+				config: &PodConfig{
+					ProxyType: CCProxyType,
+					ProxyConfig: ProxyConfig{
+						Path: "echo",
+					},
+				},
+			}, expectedURI, false,
+		},
+	}
+
+	for _, d := range data {
+		pid, uri, err := proxy.start(d.pod, proxyParams{})
+		if d.expectError {
+			assert.Error(err)
+			continue
+		}
+
+		assert.NoError(err)
+		assert.True(pid > 0)
+		assert.Equal(d.expectedURI, uri)
+	}
+}