client_test += print NEO server log if >=1 test(s) failed

go/neo/client_test.go

@@ -572,6 +572,17 @@ func withNEO(t *testing.T, f func(t *testing.T, nsrv NEOSrv, ndrv *Client), optv
 			}
 
 			t.Run(name, func(t *testing.T) {
+				defer func() {
+					if t.Failed() {
+						logContent, err := nsrv.LogContent()
+						if err != nil {
+							t.Logf("logContent returned err: %s", err)
+						} else {
+							t.Logf("NEO log content:\n\n%s", logContent)
+						}
+					}
+				}()
+
 				X := xtesting.FatalIf(t)
 
 				if noautodetect && len(encv) > 1 && encv[0] == srvEnc {