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// Copyright 2019 The gVisor 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 common executes functions for proctor binaries.
package common
import (
"flag"
"fmt"
"os"
"path/filepath"
"regexp"
)
var (
list = flag.Bool("list", false, "list all available tests")
test = flag.String("test", "", "run a single test from the list of available tests")
version = flag.Bool("v", false, "print out the version of node that is installed")
)
// TestRunner is an interface to be implemented in each proctor binary.
type TestRunner interface {
// ListTests returns a string slice of tests available to run.
ListTests() ([]string, error)
// RunTest runs a single test.
RunTest(test string) error
}
// LaunchFunc parses flags passed by a proctor binary and calls the requested behavior.
func LaunchFunc(tr TestRunner) error {
flag.Parse()
if *list && *test != "" {
flag.PrintDefaults()
return fmt.Errorf("cannot specify 'list' and 'test' flags simultaneously")
}
if *list {
tests, err := tr.ListTests()
if err != nil {
return fmt.Errorf("failed to list tests: %v", err)
}
for _, test := range tests {
fmt.Println(test)
}
return nil
}
if *version {
fmt.Println(os.Getenv("LANG_NAME"), "version:", os.Getenv("LANG_VER"), "is installed.")
return nil
}
if *test != "" {
if err := tr.RunTest(*test); err != nil {
return fmt.Errorf("test %q failed to run: %v", *test, err)
}
return nil
}
if err := runAllTests(tr); err != nil {
return fmt.Errorf("error running all tests: %v", err)
}
return nil
}
// Search uses filepath.Walk to perform a search of the disk for test files
// and returns a string slice of tests.
func Search(root string, testFilter *regexp.Regexp) ([]string, error) {
var testSlice []string
err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
name := filepath.Base(path)
if info.IsDir() || !testFilter.MatchString(name) {
return nil
}
relPath, err := filepath.Rel(root, path)
if err != nil {
return err
}
testSlice = append(testSlice, relPath)
return nil
})
if err != nil {
return nil, fmt.Errorf("walking %q: %v", root, err)
}
return testSlice, nil
}
func runAllTests(tr TestRunner) error {
tests, err := tr.ListTests()
if err != nil {
return fmt.Errorf("failed to list tests: %v", err)
}
for _, test := range tests {
if err := tr.RunTest(test); err != nil {
return fmt.Errorf("test %q failed to run: %v", test, err)
}
}
return nil
}
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