MM-9983 Requiring SiteURL to be set. (#8769)

* Requiring SiteURL to be set.

* Modifying to make tests pass.

* Fixing test.

cmd/mattermost/commands/server.go

@@ -6,6 +6,8 @@ package commands
 import (
 	"fmt"
 	"net"
+	"net/http"
+	"net/url"
 	"os"
 	"os/signal"
 	"syscall"
@@ -129,7 +131,19 @@ func runServer(configFileLocation string, disableConfigWatch bool, usedPlatform
 
 	// Enable developer settings if this is a "dev" build
 	if model.BuildNumber == "dev" {
-		a.UpdateConfig(func(cfg *model.Config) { *cfg.ServiceSettings.EnableDeveloper = true })
+		a.UpdateConfig(func(cfg *model.Config) {
+			*cfg.ServiceSettings.EnableDeveloper = true
+			if *cfg.ServiceSettings.SiteURL == "" {
+				*cfg.ServiceSettings.SiteURL = "http://localhost:8065"
+			}
+		})
+	}
+
+	// SiteURL should be set at this point. Either by a user or by the dev mode above
+	// This is here instead of in config.IsValid because there are many tests that make the assumption
+	// that the default config is valid. Which it is not.
+	if _, err := url.ParseRequestURI(*a.Config().ServiceSettings.SiteURL); err != nil {
+		return model.NewAppError("Config.IsValid", "model.config.is_valid.site_url.app_error", nil, "", http.StatusBadRequest)
 	}
 
 	resetStatuses(a)

cmd/mattermost/commands/server_test.go

@@ -11,6 +11,7 @@ import (
 	"testing"
 
 	"github.com/mattermost/mattermost-server/jobs"
+	"github.com/mattermost/mattermost-server/model"
 	"github.com/mattermost/mattermost-server/utils"
 	"github.com/stretchr/testify/require"
 )
@@ -20,6 +21,7 @@ type ServerTestHelper struct {
 	disableConfigWatch bool
 	interruptChan      chan os.Signal
 	originalInterval   int
+	oldBuildNumber     string
 }
 
 func SetupServerTest() *ServerTestHelper {
@@ -41,14 +43,20 @@ func SetupServerTest() *ServerTestHelper {
 		interruptChan:      interruptChan,
 		originalInterval:   originalInterval,
 	}
+
+	// Run in dev mode so SiteURL gets set
+	th.oldBuildNumber = model.BuildNumber
+	model.BuildNumber = "dev"
+
 	return th
 }
 
 func (th *ServerTestHelper) TearDownServerTest() {
 	jobs.DEFAULT_WATCHER_POLLING_INTERVAL = th.originalInterval
+	model.BuildNumber = th.oldBuildNumber
 }
 
-func TestRunServerSuccess(t *testing.T) {
+func TestRunServerSiteURL(t *testing.T) {
 	th := SetupServerTest()
 	defer th.TearDownServerTest()