From b913f51dfd3e5f2026341a1a2d114231a54a8b58 Mon Sep 17 00:00:00 2001
From: jamesaazam <james.azam@lshtm.ac.uk>
Date: Thu, 22 Aug 2024 14:37:52 +0100
Subject: [PATCH] Add test for expected error

---
 tests/testthat/tests-sim.r | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/testthat/tests-sim.r b/tests/testthat/tests-sim.r
index c284b32..f287b7b 100644
--- a/tests/testthat/tests-sim.r
+++ b/tests/testthat/tests-sim.r
@@ -134,6 +134,16 @@ test_that("Errors are thrown", {
     ),
     "If `tf` is specified, `serial` must be specified too."
   )
+  expect_error(
+    chain_sim(
+      n = 10,
+      offspring = "nbinom",
+      stat = "size",
+      mu = 0,
+      size = 0
+    ),
+    "must have at least one non-zero parameter"
+  )
 })
 
 test_that("Chains can be simulated", {