Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/utils/testutils/static_config_service.go

@@ -0,0 +1,33 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package testutils
+
+import (
+	"crypto/ecdsa"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+)
+
+type StaticConfigService struct {
+	Cfg *model.Config
+}
+
+func (s StaticConfigService) Config() *model.Config {
+	return s.Cfg
+}
+
+func (StaticConfigService) AddConfigListener(func(old, current *model.Config)) string {
+	return ""
+}
+
+func (StaticConfigService) RemoveConfigListener(string) {
+
+}
+
+func (StaticConfigService) AsymmetricSigningKey() *ecdsa.PrivateKey {
+	return &ecdsa.PrivateKey{}
+}
+func (StaticConfigService) PostActionCookieSecret() []byte {
+	return make([]byte, 32)
+}

server/channels/utils/testutils/testutils.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package testutils
+
+import (
+	"bytes"
+	"io"
+	"net"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"time"
+
+	"github.com/mattermost/mattermost-server/v6/server/channels/utils"
+
+	"github.com/mattermost/mattermost-server/v6/server/channels/utils/fileutils"
+)
+
+func ReadTestFile(name string) ([]byte, error) {
+	path, _ := fileutils.FindDir("tests")
+	file, err := os.Open(filepath.Join(path, name))
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	data := &bytes.Buffer{}
+	if _, err := io.Copy(data, file); err != nil {
+		return nil, err
+	}
+	return data.Bytes(), nil
+}
+
+// GetInterface returns the best match of an interface that might be listening on a given port.
+// This is helpful when a test is being run in a CI environment under docker.
+func GetInterface(port int) string {
+	dial := func(iface string, port int) bool {
+		c, err := net.DialTimeout("tcp", iface+":"+strconv.Itoa(port), time.Second)
+		if err != nil {
+			return false
+		}
+		c.Close()
+		return true
+	}
+	// First, we check dockerhost
+	iface := "dockerhost"
+	if ok := dial(iface, port); ok {
+		return iface
+	}
+	// If not, we check localhost
+	iface = "localhost"
+	if ok := dial(iface, port); ok {
+		return iface
+	}
+	// If nothing works, we just attempt to use a hack and get the interface IP.
+	// https://stackoverflow.com/a/37212665/4962526.
+	cmdStr := ""
+	switch runtime.GOOS {
+	// Using ip address for Linux, ifconfig for Darwin.
+	case "linux":
+		cmdStr = `ip address | grep -E "([0-9]{1,3}\.){3}[0-9]{1,3}" | grep -v 127.0.0.1 | awk '{ print $2 }' | cut -f2 -d: | cut -f1 -d/ | head -n1`
+	case "darwin":
+		cmdStr = `ifconfig | grep -E "([0-9]{1,3}\.){3}[0-9]{1,3}" | grep -v 127.0.0.1 | awk '{ print $2 }' | cut -f2 -d: | head -n1`
+	default:
+		return ""
+	}
+	cmd := exec.Command("bash", "-c", cmdStr)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return ""
+	}
+	return string(out)
+}
+
+func ResetLicenseValidator() {
+	utils.LicenseValidator = &utils.LicenseValidatorImpl{}
+}