test: supplement test cases for kata-check and kata-env in Arm64

There were missing test cases in Arm64 for platform-dependent
kata-check and kata-env, leading to 'make test' failure under
kata-containers/runtime

Fixes: #403

Signed-off-by: Penny Zheng <[email protected]>

cli/kata-check_amd64_test.go

@@ -455,3 +455,7 @@ func TestKvmIsUsable(t *testing.T) {
 	err = kvmIsUsable()
 	assert.Error(err)
 }
+
+func TestGetCPUDetails(t *testing.T) {
+	genericTestGetCPUDetails(t)
+}

cli/kata-check_arm64.go

@@ -53,6 +53,12 @@ func archHostCanCreateVMContainer() error {
 // hostIsVMContainerCapable checks to see if the host is theoretically capable
 // of creating a VM container.
 func hostIsVMContainerCapable(details vmContainerCapableDetails) error {
+
+	_, err := getCPUInfo(details.cpuInfoFile)
+	if err != nil {
+		return err
+	}
+
 	count, err := checkKernelModules(details.requiredKernelModules, archKernelParamHandler)
 	if err != nil {
 		return err

cli/kata-check_arm64_test.go

@@ -0,0 +1,201 @@
+// Copyright (c) 2018 ARM Limited
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/urfave/cli"
+)
+
+func setupCheckHostIsVMContainerCapable(assert *assert.Assertions, cpuInfoFile string, moduleData []testModuleData) {
+	//For now, Arm64 only deal with module check
+	createModules(assert, cpuInfoFile, moduleData)
+
+	err := makeCPUInfoFile(cpuInfoFile, "", "")
+	assert.NoError(err)
+
+}
+
+func TestCCCheckCLIFunction(t *testing.T) {
+	assert := assert.New(t)
+
+	dir, err := ioutil.TempDir("", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	savedSysModuleDir := sysModuleDir
+	savedProcCPUInfo := procCPUInfo
+
+	cpuInfoFile := filepath.Join(dir, "cpuinfo")
+
+	// XXX: override
+	sysModuleDir = filepath.Join(dir, "sys/module")
+	procCPUInfo = cpuInfoFile
+
+	defer func() {
+		sysModuleDir = savedSysModuleDir
+		procCPUInfo = savedProcCPUInfo
+	}()
+
+	err = os.MkdirAll(sysModuleDir, testDirMode)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	moduleData := []testModuleData{
+		{filepath.Join(sysModuleDir, "kvm"), true, ""},
+		{filepath.Join(sysModuleDir, "vhost"), true, ""},
+		{filepath.Join(sysModuleDir, "vhost_net"), true, ""},
+	}
+
+	devNull, err := os.OpenFile(os.DevNull, os.O_WRONLY, 0666)
+	assert.NoError(err)
+	defer devNull.Close()
+
+	savedLogOutput := kataLog.Logger.Out
+
+	// discard normal output
+	kataLog.Logger.Out = devNull
+
+	defer func() {
+		kataLog.Logger.Out = savedLogOutput
+	}()
+
+	setupCheckHostIsVMContainerCapable(assert, cpuInfoFile, moduleData)
+
+	app := cli.NewApp()
+	ctx := cli.NewContext(app, nil, nil)
+	app.Name = "foo"
+
+	// create buffer to save logger output
+	buf := &bytes.Buffer{}
+
+	// capture output this time
+	kataLog.Logger.Out = buf
+
+	fn, ok := kataCheckCLICommand.Action.(func(context *cli.Context) error)
+	assert.True(ok)
+
+	err = fn(ctx)
+	assert.NoError(err)
+
+	output := buf.String()
+
+	for _, m := range moduleData {
+		name := path.Base(m.path)
+		assert.True(findAnchoredString(output, name))
+	}
+}
+
+func TestKvmIsUsable(t *testing.T) {
+	assert := assert.New(t)
+
+	dir, err := ioutil.TempDir("", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	savedKvmDevice := kvmDevice
+	fakeKVMDevice := filepath.Join(dir, "kvm")
+	kvmDevice = fakeKVMDevice
+
+	defer func() {
+		kvmDevice = savedKvmDevice
+	}()
+
+	err = kvmIsUsable()
+	assert.Error(err)
+
+	err = createEmptyFile(fakeKVMDevice)
+	assert.NoError(err)
+
+	err = kvmIsUsable()
+	assert.Error(err)
+}
+
+func TestGetCPUDetails(t *testing.T) {
+	type testData struct {
+		contents                string
+		expectedVendor          string
+		expectedModel           string
+		expectedNormalizeVendor string
+		expectedNormalizeModel  string
+		expectError             bool
+	}
+
+	const validVendorName = "0x41"
+	const validNormalizeVendorName = "ARM Limited"
+	validVendor := fmt.Sprintf(`%s  : %s`, archCPUVendorField, validVendorName)
+
+	const validModelName = "8"
+	const validNormalizeModelName = "v8"
+	validModel := fmt.Sprintf(`%s   : %s`, archCPUModelField, validModelName)
+
+	validContents := fmt.Sprintf(`
+a       : b
+%s
+foo     : bar
+%s
+`, validVendor, validModel)
+
+	data := []testData{
+		{"", "", "", "", "", true},
+		{"invalid", "", "", "", "", true},
+		{archCPUVendorField, "", "", "", "", true},
+		{validVendor, "", "", "", "", true},
+		{validModel, "", "", "", "", true},
+		{validContents, validVendorName, validModelName, validNormalizeVendorName, validNormalizeModelName, false},
+	}
+
+	tmpdir, err := ioutil.TempDir("", "")
+	if err != nil {
+		panic(err)
+	}
+	defer os.RemoveAll(tmpdir)
+
+	savedProcCPUInfo := procCPUInfo
+
+	testProcCPUInfo := filepath.Join(tmpdir, "cpuinfo")
+
+	// override
+	procCPUInfo = testProcCPUInfo
+
+	defer func() {
+		procCPUInfo = savedProcCPUInfo
+	}()
+
+	_, _, err = getCPUDetails()
+	// ENOENT
+	assert.Error(t, err)
+	assert.True(t, os.IsNotExist(err))
+
+	for _, d := range data {
+		err := createFile(procCPUInfo, d.contents)
+		assert.NoError(t, err)
+
+		vendor, model, err := getCPUDetails()
+
+		if d.expectError {
+			assert.Error(t, err, fmt.Sprintf("%+v", d))
+			continue
+		} else {
+			assert.NoError(t, err, fmt.Sprintf("%+v", d))
+			assert.Equal(t, d.expectedNormalizeVendor, vendor)
+			assert.Equal(t, d.expectedNormalizeModel, model)
+		}
+	}
+}

cli/kata-check_data_arm64_test.go

@@ -0,0 +1,27 @@
+// Copyright (c) 2018 ARM Limited
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package main
+
+const testCPUInfoTemplate = `
+processor	: 0
+BogoMIPS	: 500.00
+Features	: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
+CPU implementer	: 0x41
+CPU architecture: 8
+CPU variant	: 0x1
+CPU part	: 0xd07
+CPU revision	: 2
+
+processor	: 1
+BogoMIPS	: 500.00
+Features	: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
+CPU implementer	: 0x41
+CPU architecture: 8
+CPU variant	: 0x1
+CPU part	: 0xd07
+CPU revision	: 2
+
+`

cli/kata-check_ppc64le_test.go

@@ -207,3 +207,7 @@ func TestKvmIsUsable(t *testing.T) {
 	err = kvmIsUsable()
 	assert.Error(err)
 }
+
+func TestGetCPUDetails(t *testing.T) {
+	genericTestGetCPUDetails(t)
+}

cli/kata-check_test.go

@@ -137,6 +137,75 @@ func makeCPUInfoFile(path, vendorID, flags string) error {
 	return ioutil.WriteFile(path, contents.Bytes(), testFileMode)
 }
 
+func genericTestGetCPUDetails(t *testing.T) {
+	type testData struct {
+		contents       string
+		expectedVendor string
+		expectedModel  string
+		expectError    bool
+	}
+
+	const validVendorName = "a vendor"
+	validVendor := fmt.Sprintf(`%s  : %s`, archCPUVendorField, validVendorName)
+
+	const validModelName = "some CPU model"
+	validModel := fmt.Sprintf(`%s   : %s`, archCPUModelField, validModelName)
+
+	validContents := fmt.Sprintf(`
+a       : b
+%s
+foo     : bar
+%s
+`, validVendor, validModel)
+
+	data := []testData{
+		{"", "", "", true},
+		{"invalid", "", "", true},
+		{archCPUVendorField, "", "", true},
+		{validVendor, "", "", true},
+		{validModel, "", "", true},
+		{validContents, validVendorName, validModelName, false},
+	}
+
+	tmpdir, err := ioutil.TempDir("", "")
+	if err != nil {
+		panic(err)
+	}
+	defer os.RemoveAll(tmpdir)
+
+	savedProcCPUInfo := procCPUInfo
+
+	testProcCPUInfo := filepath.Join(tmpdir, "cpuinfo")
+
+	// override
+	procCPUInfo = testProcCPUInfo
+
+	defer func() {
+		procCPUInfo = savedProcCPUInfo
+	}()
+
+	_, _, err = getCPUDetails()
+	// ENOENT
+	assert.Error(t, err)
+	assert.True(t, os.IsNotExist(err))
+
+	for _, d := range data {
+		err := createFile(procCPUInfo, d.contents)
+		assert.NoError(t, err)
+
+		vendor, model, err := getCPUDetails()
+
+		if d.expectError {
+			assert.Error(t, err, fmt.Sprintf("%+v", d))
+			continue
+		} else {
+			assert.NoError(t, err, fmt.Sprintf("%+v", d))
+			assert.Equal(t, d.expectedVendor, vendor)
+			assert.Equal(t, d.expectedModel, model)
+		}
+	}
+}
+
 func TestCheckGetCPUInfo(t *testing.T) {
 	assert := assert.New(t)
 

cli/kata-env_amd64_test.go

@@ -0,0 +1,10 @@
+// Copyright (c) 2018 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package main
+
+func getExpectedHostDetails(tmpdir string) (HostInfo, error) {
+	return genericGetExpectedHostDetails(tmpdir)
+}