1 files changed, 103 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/io/UncheckedIOTest.java b/src/test/java/org/apache/commons/io/UncheckedIOTest.java
new file mode 100644
index 00000000..38aae531
--- /dev/null
+++ b/src/test/java/org/apache/commons/io/UncheckedIOTest.java
@@ -0,0 +1,103 @@
+/*
+ * 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.io;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.ByteArrayInputStream;
+
+import org.apache.commons.io.function.IOBiFunction;
+import org.apache.commons.io.function.IOConsumer;
+import org.apache.commons.io.function.IOFunction;
+import org.apache.commons.io.function.IORunnable;
+import org.apache.commons.io.function.IOSupplier;
+import org.apache.commons.io.function.IOTriFunction;
+import org.apache.commons.io.function.Uncheck;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests {@link Uncheck}.
+ */
+public class UncheckedIOTest {
+
+    private static final byte[] BYTES = {'a', 'b'};
+
+    private ByteArrayInputStream newInputStream() {
+        return new ByteArrayInputStream(BYTES);
+    }
+
+    /**
+     * Tests {@link Uncheck#accept(IOConsumer, Object)}.
+     */
+    @Test
+    public void testAccept() {
+        final ByteArrayInputStream stream = newInputStream();
+        Uncheck.accept(n -> stream.skip(n), 1);
+        assertEquals('b', Uncheck.get(stream::read).intValue());
+    }
+
+    /**
+     * Tests {@link Uncheck#apply(IOFunction, Object)}.
+     */
+    @Test
+    public void testApply1() {
+        final ByteArrayInputStream stream = newInputStream();
+        assertEquals(1, Uncheck.apply(n -> stream.skip(n), 1).intValue());
+        assertEquals('b', Uncheck.get(stream::read).intValue());
+    }
+
+    /**
+     * Tests {@link Uncheck#apply(IOBiFunction, Object, Object)}.
+     */
+    @Test
+    public void testApply2() {
+        final ByteArrayInputStream stream = newInputStream();
+        final byte[] buf = new byte[BYTES.length];
+        assertEquals(1, Uncheck.apply((o, l) -> stream.read(buf, o, l), 0, 1).intValue());
+        assertEquals('a', buf[0]);
+    }
+
+    /**
+     * Tests {@link Uncheck#apply(IOTriFunction, Object, Object, Object)}.
+     */
+    @Test
+    public void testApply3() {
+        final ByteArrayInputStream stream = newInputStream();
+        final byte[] buf = new byte[BYTES.length];
+        assertEquals(1, Uncheck.apply((b, o, l) -> stream.read(b, o, l), buf, 0, 1).intValue());
+        assertEquals('a', buf[0]);
+    }
+
+    /**
+     * Tests {@link Uncheck#get(IOSupplier)}.
+     */
+    @Test
+    public void testGet() {
+        assertEquals('a', Uncheck.get(() -> newInputStream().read()).intValue());
+    }
+
+    /**
+     * Tests {@link Uncheck#run(IORunnable)}.
+     */
+    @Test
+    public void testRun() {
+        final ByteArrayInputStream stream = newInputStream();
+        Uncheck.run(() -> stream.skip(1));
+        assertEquals('b', Uncheck.get(stream::read).intValue());
+    }
+}