From 8fd5d3eaf3d8a92a381f9250dc56d5dd15f3d326 Mon Sep 17 00:00:00 2001
From: Maisem Ali <maisem@tailscale.com>
Date: Fri, 29 Jul 2022 09:48:35 -0700
Subject: [PATCH] tstest: do not error if the there are fewer goroutines than
 at start

This fixes test failures like:
```
    resource.go:34: goroutine count: expected 3, got 2
```

Signed-off-by: Maisem Ali <maisem@tailscale.com>
---
 tstest/resource.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tstest/resource.go b/tstest/resource.go
index 5b770986d..ae085ef5c 100644
--- a/tstest/resource.go
+++ b/tstest/resource.go
@@ -30,6 +30,9 @@ func ResourceCheck(tb testing.TB) {
 			time.Sleep(5 * time.Millisecond)
 		}
 		endN, endStacks := goroutines()
+		if endN <= startN {
+			return
+		}
 		tb.Logf("goroutine diff:\n%v\n", cmp.Diff(startStacks, endStacks))
 		tb.Fatalf("goroutine count: expected %d, got %d\n", startN, endN)
 	})