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// Copyright 2021 Google Inc. All rights reserved.
//
// 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 build
import (
"os"
"testing"
)
func TestMain(m *testing.M) {
// set src dir of sandbox
sandboxConfig.srcDir = "/my/src/dir"
os.Exit(m.Run())
}
func TestMountFlagsSrcDir(t *testing.T) {
testCases := []struct {
srcDirIsRO bool
expectedSrcDirFlag string
}{
{
srcDirIsRO: false,
expectedSrcDirFlag: "-B",
},
{
srcDirIsRO: true,
expectedSrcDirFlag: "-R",
},
}
for _, testCase := range testCases {
c := testCmd()
c.config.sandboxConfig.SetSrcDirIsRO(testCase.srcDirIsRO)
c.wrapSandbox()
if !isExpectedMountFlag(c.Args, sandboxConfig.srcDir, testCase.expectedSrcDirFlag) {
t.Error("Mount flag of srcDir is not correct")
}
}
}
func TestMountFlagsSrcDirRWAllowlist(t *testing.T) {
testCases := []struct {
srcDirRWAllowlist []string
}{
{
srcDirRWAllowlist: []string{},
},
{
srcDirRWAllowlist: []string{"my/path"},
},
{
srcDirRWAllowlist: []string{"my/path1", "my/path2"},
},
}
for _, testCase := range testCases {
c := testCmd()
c.config.sandboxConfig.SetSrcDirIsRO(true)
c.config.sandboxConfig.SetSrcDirRWAllowlist(testCase.srcDirRWAllowlist)
c.wrapSandbox()
for _, allowlistPath := range testCase.srcDirRWAllowlist {
if !isExpectedMountFlag(c.Args, allowlistPath, "-B") {
t.Error("Mount flag of srcDirRWAllowlist is not correct, expect -B")
}
}
}
}
// utils for setting up test
func testConfig() Config {
// create a minimal testConfig
env := Environment([]string{})
sandboxConfig := SandboxConfig{}
return Config{&configImpl{environ: &env,
sandboxConfig: &sandboxConfig}}
}
func testCmd() *Cmd {
return Command(testContext(), testConfig(), "sandbox_test", "path/to/nsjail")
}
func isExpectedMountFlag(cmdArgs []string, dirName string, expectedFlag string) bool {
indexOfSrcDir := index(cmdArgs, dirName)
return cmdArgs[indexOfSrcDir-1] == expectedFlag
}
func index(arr []string, target string) int {
for idx, element := range arr {
if element == target {
return idx
}
}
panic("element could not be located in input array")
}
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