add test

Author: pjfanning

actor-typed-tests/src/test/scala/org/apache/pekko/actor/typed/ActorSystemSpec.scala

@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.pekko.actor.typed
+
+import com.typesafe.config.ConfigFactory
+import org.apache.pekko
+import pekko.actor.typed.scaladsl.Behaviors
+import pekko.testkit.PekkoSpec
+
+import scala.annotation.nowarn
+
+@nowarn("msg=possible missing interpolator")
+class ActorSystemSpec extends PekkoSpec {
+  "ActorSystem" should {
+    "not include username in toString" in {
+      // Actor System toString is output to logs and we don't want env variable values appearing in logs
+      val system = ActorSystem(Behaviors.empty[String], "config-test-system",
+          ConfigFactory
+            .parseString("""pekko.test.java.property.home = "${user.home}"""")
+            .withFallback(PekkoSpec.testConf))
+      try {
+        val debugText = system.settings.toString
+        val username = System.getProperty("user.name")
+        val userHome = System.getProperty("user.home")
+        (debugText should not).include(username)
+        (debugText should not).include(userHome)
+        debugText should include("<username>")
+      } finally {
+        system.terminate()
+      }
+    }
+  }
+}