From dfeb0b6fa64c6781d93fd161bf9f616ecd7c6caa Mon Sep 17 00:00:00 2001
From: axexlck <axelclk@gmail.com>
Date: Sun, 10 Nov 2024 02:43:24 +0100
Subject: [PATCH] wait for `Rubi` context to be initialized in JUnit
 `FileFunctionsTest`

---
 .../core/system/FileFunctionsTest.java          | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/symja_android_library/matheclipse-core/src/test/java/org/matheclipse/core/system/FileFunctionsTest.java b/symja_android_library/matheclipse-core/src/test/java/org/matheclipse/core/system/FileFunctionsTest.java
index 3fd95e954b..004ddda35f 100644
--- a/symja_android_library/matheclipse-core/src/test/java/org/matheclipse/core/system/FileFunctionsTest.java
+++ b/symja_android_library/matheclipse-core/src/test/java/org/matheclipse/core/system/FileFunctionsTest.java
@@ -2,9 +2,26 @@
 
 import org.junit.Test;
 import org.matheclipse.core.basic.Config;
+import org.matheclipse.core.expression.F;
+import org.matheclipse.core.expression.S;
 
 public class FileFunctionsTest extends ExprEvaluatorTestCase {
 
+  @Override
+  public void setUp() {
+    super.setUp();
+    try {
+      F.initSymbols();
+      F.await();
+      // wait especially for Rubi` context to be initialized otherwise
+      // java.util.ConcurrentModificationException can occur in saving Global` context in
+      // testSaveGlobalContext()
+      S.Integrate.getEvaluator().await();
+    } catch (InterruptedException e) {
+      e.printStackTrace();
+    }
+  }
+
   @Test
   public void testSave() {
     Config.FILESYSTEM_ENABLED = true;