Fixed misuses of fmt.Println and t.Error

Author: NI

application/command/handler.go

@@ -80,7 +80,7 @@ func (h *handlerSender) signal(hd Header, d []byte, buf []byte) error {
 	dLen := len(d)
 
 	if bufLen < dLen+1 {
-		panic(fmt.Sprintln("Sending signal %s:%d requires %d bytes of buffer, "+
+		panic(fmt.Sprintf("Sending signal %s:%d requires %d bytes of buffer, "+
 			"but only %d bytes is available", hd, d, dLen+1, bufLen))
 	}
 

application/commands/integer_test.go

@@ -65,7 +65,7 @@ func TestIntegerSingleByte1(t *testing.T) {
 	}
 
 	if mLen != 1 {
-		t.Error("Expecting the Integer to be marshalled into %d bytes, got "+
+		t.Errorf("Expecting the Integer to be marshalled into %d bytes, got "+
 			"%d instead", 1, mLen)
 
 		return
@@ -101,7 +101,7 @@ func TestIntegerSingleByte2(t *testing.T) {
 	}
 
 	if mLen != 1 {
-		t.Error("Expecting the Integer to be marshalled into %d bytes, got "+
+		t.Errorf("Expecting the Integer to be marshalled into %d bytes, got "+
 			"%d instead", 1, mLen)
 
 		return