From 3c1a2a942a3264da7861891eb9852cdd2a889666 Mon Sep 17 00:00:00 2001
From: Laurens Valk <laurens@pybricks.com>
Date: Thu, 24 Nov 2022 08:58:10 +0100
Subject: [PATCH] tests/misc/cexample_class: Fix timing sensitivity.

This test could occasionally fail because some operations take longer
than expected. This relaxes the timing constraints and defers printing
until the very end.

Signed-off-by: Laurens Valk <laurens@pybricks.com>
---
 tests/misc/cexample_class.py     | 16 ++++++++++------
 tests/misc/cexample_class.py.exp |  1 +
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/tests/misc/cexample_class.py b/tests/misc/cexample_class.py
index bdeb9a8cb2..6b8718ad8c 100644
--- a/tests/misc/cexample_class.py
+++ b/tests/misc/cexample_class.py
@@ -7,14 +7,18 @@ except ImportError:
     print("SKIP")
     raise SystemExit
 
-t = cexample.Timer()
 
-print(t)
-print(t.time() <= 1)
+SLEEP_MS = 100
+TOLERANCE_MS = 20
+
+timer = cexample.Timer()
+
+t_start = timer.time()
 
 time.sleep_ms(100)
 
-elapsed = t.time()
+t_end = timer.time()
 
-if not (99 <= elapsed <= 110):
-    print("Elapsed time should be approx. 100ms but it is", elapsed)
+print(timer)
+print(0 <= t_start <= TOLERANCE_MS)
+print(SLEEP_MS - TOLERANCE_MS <= t_end <= SLEEP_MS + TOLERANCE_MS)
diff --git a/tests/misc/cexample_class.py.exp b/tests/misc/cexample_class.py.exp
index 67d98761b0..b9a06602a3 100644
--- a/tests/misc/cexample_class.py.exp
+++ b/tests/misc/cexample_class.py.exp
@@ -1,2 +1,3 @@
 <Timer>
 True
+True