Add implementation for POST /email/test apiV4 - Send Test Email (#5716)

api4/system_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
 )
 
 func TestGetPing(t *testing.T) {
@@ -64,3 +65,32 @@ func TestGetConfig(t *testing.T) {
 		t.Fatal("did not sanitize properly")
 	}
 }
+
+func TestEmailTest(t *testing.T) {
+	th := Setup().InitBasic().InitSystemAdmin()
+	defer TearDown()
+	Client := th.Client
+
+	SendEmailNotifications := utils.Cfg.EmailSettings.SendEmailNotifications
+	SMTPServer := utils.Cfg.EmailSettings.SMTPServer
+	SMTPPort := utils.Cfg.EmailSettings.SMTPPort
+	FeedbackEmail := utils.Cfg.EmailSettings.FeedbackEmail
+	defer func() {
+		utils.Cfg.EmailSettings.SendEmailNotifications = SendEmailNotifications
+		utils.Cfg.EmailSettings.SMTPServer = SMTPServer
+		utils.Cfg.EmailSettings.SMTPPort = SMTPPort
+		utils.Cfg.EmailSettings.FeedbackEmail = FeedbackEmail
+	}()
+
+	utils.Cfg.EmailSettings.SendEmailNotifications = false
+	utils.Cfg.EmailSettings.SMTPServer = ""
+	utils.Cfg.EmailSettings.SMTPPort = ""
+	utils.Cfg.EmailSettings.FeedbackEmail = ""
+
+	_, resp := Client.TestEmail()
+	CheckForbiddenStatus(t, resp)
+
+	_, resp = th.SystemAdminClient.TestEmail()
+	CheckErrorMessage(t, resp, "api.admin.test_email.missing_server")
+	CheckInternalErrorStatus(t, resp)
+}