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main_test.go
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main_test.go
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// Copyright 2022 Northern.tech AS
//
// 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.
//go:build acceptance
// +build acceptance
package main
import (
"bufio"
"encoding/hex"
"flag"
"fmt"
"hash/crc64"
"io"
"os"
"os/signal"
"testing"
)
const (
coverName = "coverage-acceptance"
coverExt = ".txt"
)
func TestMain(m *testing.M) {
argHash := crc64.New(crc64.MakeTable(crc64.ECMA))
for _, arg := range os.Args {
_, _ = argHash.Write([]byte(arg))
}
fileNameCoverRun := fmt.Sprintf("%s@%s%s",
coverName, hex.EncodeToString(argHash.Sum(nil)), coverExt)
fileNameCoverAll := coverName + coverExt
os.Args = os.Args[:1]
flag.Set("test.run", "TestRunMain")
flag.Set("test.coverprofile", fileNameCoverRun)
exitCode := m.Run()
if exitCode > 0 {
os.Exit(exitCode)
}
// TODO: Should protect 'coverage-acceptance.txt' with a filelock
err := aggregateCoverage(fileNameCoverRun, fileNameCoverAll)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
os.Exit(0)
}
func TestRunMain(t *testing.T) {
stopChan := make(chan os.Signal)
signal.Notify(stopChan, os.Interrupt)
go func() {
doMain(os.Args[:cap(os.Args)])
signal.Stop(stopChan)
close(stopChan)
}()
<-stopChan
}
func aggregateCoverage(src, dst string) (err error) {
fdRun, err := os.OpenFile(src, os.O_RDONLY, 0644)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to open file '%s': %s\n", src, err)
os.Exit(1)
}
defer fdRun.Close()
var rSrc io.Reader = fdRun
fd, err := os.OpenFile(dst, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
if os.IsExist(err) {
fd, err = os.OpenFile(dst, os.O_RDWR, 0644)
if err != nil {
return err
}
defer fd.Close()
_, err := fd.Seek(0, io.SeekEnd)
if err != nil {
return err
}
rdr := bufio.NewReader(fdRun)
// Skip first line
_, err = rdr.ReadSlice('\n')
if err != nil {
return err
}
rSrc = rdr
} else if err != nil {
return err
} else {
// Coverage file created
defer fd.Close()
}
_, err = io.Copy(fd, rSrc)
return err
}