From fa97e8ca899fb7c665c0fbc795bcf3510c585708 Mon Sep 17 00:00:00 2001
From: samreid <reids@colorado.edu>
Date: Mon, 12 Oct 2020 09:33:31 -0600
Subject: [PATCH] Launch Tandem if it has not been launched already, so that
 phetioAPIValidation can run, see
 https://github.com/phetsims/scenery/issues/1046

---
 js/nodes/NodeTests.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/js/nodes/NodeTests.js b/js/nodes/NodeTests.js
index 8e176b26e..0e6ef1200 100644
--- a/js/nodes/NodeTests.js
+++ b/js/nodes/NodeTests.js
@@ -161,6 +161,11 @@ if ( Tandem.PHET_IO_ENABLED ) {
 
   QUnit.test( 'Node instrumented visible Property', assert => {
 
+    const wasLaunched = Tandem.launched;
+    if ( !Tandem.launched ) {
+      Tandem.launch();
+    }
+
     const apiValidation = phet.tandem.phetioAPIValidation;
     const previousEnabled = apiValidation.enabled;
     const previousSimStarted = apiValidation.simHasStarted;
@@ -377,5 +382,9 @@ if ( Tandem.PHET_IO_ENABLED ) {
     otherInstrumentedVisibleProperty.dispose();
     apiValidation.simHasStarted = previousSimStarted;
     apiValidation.enabled = previousEnabled;
+
+    if ( !wasLaunched ) {
+      Tandem.unlaunch();
+    }
   } );
 }