[bug-67579] test OPCPackage

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1913368 13f79535-47bb-0310-9956-ffa450edef68

poi-ooxml/src/test/java/org/apache/poi/openxml4j/TestOPCPackage.java

@@ -0,0 +1,78 @@
+/* ====================================================================
+   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.poi.openxml4j;
+
+import org.apache.poi.hssf.HSSFTestDataSamples;
+import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
+import org.apache.poi.openxml4j.opc.OPCPackage;
+import org.apache.poi.openxml4j.util.ZipSecureFile;
+import org.apache.poi.xssf.usermodel.TestXSSFWorkbook;
+import org.apache.poi.xssf.usermodel.XSSFSheet;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class TestOPCPackage {
+    @Test
+    void testPackageCloseClosesInputStream() throws Exception {
+        try (WrappedStream stream = new WrappedStream(
+                     HSSFTestDataSamples.openSampleFileStream("HeaderFooterComplexFormats.xlsx"))) {
+            try (OPCPackage opcPackage = OPCPackage.open(stream)) {
+                assertFalse(opcPackage.isClosed());
+            }
+            assertTrue(stream.isClosed(), "stream should be closed by OPCPackage");
+        }
+    }
+
+    @Test
+    void testPackageCloseDoesNptCloseInputStream() throws Exception {
+        try (WrappedStream stream = new WrappedStream(
+                HSSFTestDataSamples.openSampleFileStream("HeaderFooterComplexFormats.xlsx"))) {
+            try (OPCPackage opcPackage = OPCPackage.open(stream, false)) {
+                assertFalse(opcPackage.isClosed());
+            }
+            assertFalse(stream.isClosed(), "stream should not be closed by OPCPackage");
+        }
+    }
+
+    private static class WrappedStream extends FilterInputStream {
+        private boolean closed;
+
+        WrappedStream(InputStream stream) {
+            super(stream);
+        }
+
+        @Override
+        public void close() throws IOException {
+            super.close();
+            closed = true;
+        }
+
+        boolean isClosed() {
+            return closed;
+        }
+    }
+
+}