Test for rx3.io-scheduled-release

Author: sgc-code

src/test/java/io/reactivex/rxjava3/schedulers/IoScheduledReleaseTest.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2016-present, RxJava Contributors.
+ *
+ * Licensed 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 io.reactivex.rxjava3.schedulers;
+
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.core.Flowable;
+import io.reactivex.rxjava3.core.RxJavaTest;
+import org.junit.Test;
+
+import java.util.concurrent.TimeUnit;
+
+public class IoScheduledReleaseTest extends RxJavaTest {
+
+    /* This test will be stuck in a deadlock if rx3.io-scheduled-release is not set */
+    @Test
+    public void scheduledRelease() {
+        System.setProperty("rx3.io-scheduled-release", Boolean.TRUE.toString());
+        Flowable.just("item")
+                .observeOn(Schedulers.io())
+                .firstOrError()
+                .map(item -> {
+                    for (int i = 0; i < 50; i++) {
+                        Completable.complete()
+                                .observeOn(Schedulers.io())
+                                .blockingAwait();
+                    }
+                    return "Done";
+                })
+                .ignoreElement()
+                .test()
+                .awaitDone(5, TimeUnit.SECONDS)
+                .assertComplete();
+    }
+}