pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / backwards / src / test / org / apache / lucene / util / TestIOUtils.java

diff --git a/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/util/TestIOUtils.java b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/util/TestIOUtils.java
new file mode 100644 (file)
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--- /dev/null
+++ b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/util/TestIOUtils.java
@@ -0,0 +1,107 @@
+package org.apache.lucene.util;
+
+/**
+ * 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.
+ */
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+public class TestIOUtils extends LuceneTestCase {
+
+  static final class BrokenCloseable implements Closeable {
+    final int i;
+    
+    public BrokenCloseable(int i) {
+      this.i = i;
+    }
+  
+    // Not until Java6: @Override
+    public void close() throws IOException {
+      throw new IOException("TEST-IO-EXCEPTION-" + i);
+    }
+  }
+
+  static final class TestException extends Exception {
+    public TestException() {
+      super("BASE-EXCEPTION");
+    }
+  }
+
+  public void testSuppressedExceptions() {
+    boolean isJava7 = true;
+    try {
+      // this class only exists in Java 7:
+      Class.forName("java.lang.AutoCloseable");
+    } catch (ClassNotFoundException cnfe) {
+      isJava7 = false;
+    }
+    
+    if (!isJava7) {
+      System.err.println("WARNING: TestIOUtils.testSuppressedExceptions: Full test coverage only with Java 7, as suppressed exception recording is not supported before.");
+    }
+    
+    // test with prior exception
+    try {
+      final TestException t = new TestException();
+      IOUtils.closeWhileHandlingException(t, new BrokenCloseable(1), new BrokenCloseable(2));
+    } catch (TestException e1) {
+      assertEquals("BASE-EXCEPTION", e1.getMessage());
+      final StringWriter sw = new StringWriter();
+      final PrintWriter pw = new PrintWriter(sw);
+      e1.printStackTrace(pw);
+      pw.flush();
+      final String trace = sw.toString();
+      if (VERBOSE) {
+        System.out.println("TestIOUtils.testSuppressedExceptions: Thrown Exception stack trace:");
+        System.out.println(trace);
+      }
+      if (isJava7) {
+        assertTrue("Stack trace does not contain first suppressed Exception: " + trace,
+          trace.contains("java.io.IOException: TEST-IO-EXCEPTION-1"));
+        assertTrue("Stack trace does not contain second suppressed Exception: " + trace,
+          trace.contains("java.io.IOException: TEST-IO-EXCEPTION-2"));
+      }
+    } catch (IOException e2) {
+      fail("IOException should not be thrown here");
+    }
+    
+    // test without prior exception
+    try {
+      IOUtils.closeWhileHandlingException((TestException) null, new BrokenCloseable(1), new BrokenCloseable(2));
+    } catch (TestException e1) {
+      fail("TestException should not be thrown here");
+    } catch (IOException e2) {
+      assertEquals("TEST-IO-EXCEPTION-1", e2.getMessage());
+      final StringWriter sw = new StringWriter();
+      final PrintWriter pw = new PrintWriter(sw);
+      e2.printStackTrace(pw);
+      pw.flush();
+      final String trace = sw.toString();
+      if (VERBOSE) {
+        System.out.println("TestIOUtils.testSuppressedExceptions: Thrown Exception stack trace:");
+        System.out.println(trace);
+      }
+      if (isJava7) {
+        assertTrue("Stack trace does not contain suppressed Exception: " + trace,
+          trace.contains("java.io.IOException: TEST-IO-EXCEPTION-2"));
+      }
+    }
+  }
+  
+}