[Test] Restore test

test/functional/cases/100_general.robot

@@ -45,4 +45,10 @@ EMAILS DETECTION 1
   ${result} =  Scan Message With Rspamc  ${TESTDIR}/messages/emails1.eml
   Check Rspamc  ${result}  "jim@example.net"
   Should Contain  ${result.stdout}  "bob@example.net"
-  Should Contain  ${result.stdout}  "rupert@example.net"
+  Should Contain  ${result.stdout}  "rupert@example.net"
+
+EMAILS DETECTION ZEROFONT
+  ${result} =  Scan File  ${LOCAL_ADDR}  ${PORT_NORMAL}  ${TESTDIR}/messages/zerofont.eml
+  Follow Rspamd Log
+  Should Contain  ${result}  MANY_INVISIBLE_PARTS
+  Should Contain  ${result}  ZERO_FONT