1 files changed, 124 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/concurrent/UncheckedFutureTest.java b/src/test/java/org/apache/commons/lang3/concurrent/UncheckedFutureTest.java
new file mode 100644
index 000000000..d583680be
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+++ b/src/test/java/org/apache/commons/lang3/concurrent/UncheckedFutureTest.java
@@ -0,0 +1,124 @@
+/*
+ * 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.commons.lang3.concurrent;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.stream.Collectors;
+
+import org.apache.commons.lang3.AbstractLangTest;
+import org.apache.commons.lang3.exception.UncheckedInterruptedException;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests {@link UncheckedFuture}.
+ */
+public class UncheckedFutureTest extends AbstractLangTest {
+
+    private static class TestFuture<V> extends AbstractFutureProxy<V> {
+
+        private final Exception exception;
+
+        TestFuture(final Exception throwable) {
+            super(ConcurrentUtils.constantFuture(null));
+            this.exception = throwable;
+        }
+
+        TestFuture(final V value) {
+            super(ConcurrentUtils.constantFuture(value));
+            this.exception = null;
+        }
+
+        @SuppressWarnings("unchecked") // Programming error if call site blows up at runtime.
+        private <T extends Exception> void checkException() throws T {
+            if (exception != null) {
+                throw (T) exception;
+            }
+        }
+
+        @Override
+        public V get() throws InterruptedException, ExecutionException {
+            checkException();
+            return super.get();
+        }
+
+        @Override
+        public V get(final long timeout, final TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
+            checkException();
+            return super.get(timeout, unit);
+        }
+
+    }
+
+    @Test
+    public void testGetExecutionException() {
+        final ExecutionException e = new ExecutionException(new Exception());
+        assertThrows(UncheckedExecutionException.class, () -> UncheckedFuture.on(new TestFuture<>(e)).get());
+    }
+
+    @Test
+    public void testGetInterruptedException() {
+        final InterruptedException e = new InterruptedException();
+        assertThrows(UncheckedInterruptedException.class, () -> UncheckedFuture.on(new TestFuture<>(e)).get());
+    }
+
+    @Test
+    public void testGetLongExecutionException() {
+        final ExecutionException e = new ExecutionException(new Exception());
+        assertThrows(UncheckedExecutionException.class, () -> UncheckedFuture.on(new TestFuture<>(e)).get(1, TimeUnit.MICROSECONDS));
+    }
+
+    @Test
+    public void testGetLongInterruptedException() {
+        final InterruptedException e = new InterruptedException();
+        assertThrows(UncheckedInterruptedException.class, () -> UncheckedFuture.on(new TestFuture<>(e)).get(1, TimeUnit.MICROSECONDS));
+    }
+
+    @Test
+    public void testGetLongTimeoutException() {
+        final TimeoutException e = new TimeoutException();
+        assertThrows(UncheckedTimeoutException.class, () -> UncheckedFuture.on(new TestFuture<>(e)).get(1, TimeUnit.MICROSECONDS));
+    }
+
+    @Test
+    public void testMap() {
+        final List<String> expected = Arrays.asList("Y", "Z");
+        final List<Future<String>> input = Arrays.asList(new TestFuture<>("Y"), new TestFuture<>("Z"));
+        assertEquals(expected, UncheckedFuture.map(input).map(UncheckedFuture::get).collect(Collectors.toList()));
+    }
+
+    @Test
+    public void testOnCollection() {
+        final List<String> expected = Arrays.asList("Y", "Z");
+        final List<Future<String>> input = Arrays.asList(new TestFuture<>("Y"), new TestFuture<>("Z"));
+        assertEquals(expected, UncheckedFuture.on(input).stream().map(UncheckedFuture::get).collect(Collectors.toList()));
+    }
+
+    @Test
+    public void testOnFuture() {
+        assertEquals("Z", UncheckedFuture.on(new TestFuture<>("Z")).get());
+    }
+
+}