131 lines
3.7 KiB
Go
131 lines
3.7 KiB
Go
// Copyright 2017 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build cov
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package e2e
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"syscall"
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"time"
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"github.com/coreos/etcd/pkg/expect"
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"github.com/coreos/etcd/pkg/fileutil"
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"github.com/coreos/etcd/pkg/flags"
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)
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const noOutputLineCount = 2 // cov-enabled binaries emit PASS and coverage count lines
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func spawnCmd(args []string) (*expect.ExpectProcess, error) {
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if args[0] == binPath {
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return spawnEtcd(args)
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}
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if args[0] == ctlBinPath {
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covArgs, err := getCovArgs()
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if err != nil {
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return nil, err
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}
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// avoid test flag conflicts in coverage enabled etcdctl by putting flags in ETCDCTL_ARGS
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ctl_cov_env := []string{
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// was \xff, but that's used for testing boundary conditions; 0xe7cd should be safe
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"ETCDCTL_ARGS=" + strings.Join(args, "\xe7\xcd"),
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}
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// when withFlagByEnv() is used in testCtl(), env variables for ctl is set to os.env.
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// they must be included in ctl_cov_env.
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ctl_cov_env = append(ctl_cov_env, os.Environ()...)
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ep, err := expect.NewExpectWithEnv(binDir+"/etcdctl_test", covArgs, ctl_cov_env)
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if err != nil {
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return nil, err
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}
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ep.StopSignal = syscall.SIGTERM
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return ep, nil
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}
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return expect.NewExpect(args[0], args[1:]...)
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}
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func spawnEtcd(args []string) (*expect.ExpectProcess, error) {
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covArgs, err := getCovArgs()
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if err != nil {
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return nil, err
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}
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env := []string{}
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if args[1] == "grpc-proxy" {
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// avoid test flag conflicts in coverage enabled etcd by putting flags in ETCDCOV_ARGS
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env = append(os.Environ(), "ETCDCOV_ARGS="+strings.Join(args, "\xe7\xcd"))
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} else {
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env = args2env(args[1:])
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}
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ep, err := expect.NewExpectWithEnv(binDir+"/etcd_test", covArgs, env)
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if err != nil {
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return nil, err
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}
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// ep sends SIGTERM to etcd_test process on ep.close()
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// allowing the process to exit gracefully in order to generate a coverage report.
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// note: go runtime ignores SIGINT but not SIGTERM
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// if e2e test is run as a background process.
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ep.StopSignal = syscall.SIGTERM
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return ep, nil
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}
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func getCovArgs() ([]string, error) {
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coverPath := os.Getenv("COVERDIR")
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if !filepath.IsAbs(coverPath) {
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// COVERDIR is relative to etcd root but e2e test has its path set to be relative to the e2e folder.
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// adding ".." in front of COVERDIR ensures that e2e saves coverage reports to the correct location.
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coverPath = filepath.Join("..", coverPath)
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}
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if !fileutil.Exist(coverPath) {
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return nil, fmt.Errorf("could not find coverage folder")
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}
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covArgs := []string{
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fmt.Sprintf("-test.coverprofile=e2e.%v.coverprofile", time.Now().UnixNano()),
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"-test.outputdir=" + coverPath,
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}
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return covArgs, nil
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}
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func args2env(args []string) []string {
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var covEnvs []string
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for i := range args {
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if !strings.HasPrefix(args[i], "--") {
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continue
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}
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flag := strings.Split(args[i], "--")[1]
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val := "true"
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// split the flag that has "="
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// e.g --auto-tls=true" => flag=auto-tls and val=true
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if strings.Contains(args[i], "=") {
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split := strings.Split(flag, "=")
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flag = split[0]
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val = split[1]
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}
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if i+1 < len(args) {
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if !strings.HasPrefix(args[i+1], "--") {
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val = args[i+1]
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}
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}
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covEnvs = append(covEnvs, flags.FlagToEnv("ETCD", flag)+"="+val)
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}
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return covEnvs
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}
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