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diff --git a/asm/src/test/java/org/objectweb/asm/HandlerTest.java b/asm/src/test/java/org/objectweb/asm/HandlerTest.java
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+// ASM: a very small and fast Java bytecode manipulation framework
+// Copyright (c) 2000-2011 INRIA, France Telecom
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the copyright holders nor the names of its
+//    contributors may be used to endorse or promote products derived from
+//    this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
+package org.objectweb.asm;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit tests for {@link Handler}.
+ *
+ * @author Eric Bruneton
+ */
+class HandlerTest {
+
+  @Test
+  void testConstructor() {
+    Label startPc = new Label();
+    Label endPc = new Label();
+    Label handlerPc = new Label();
+    int catchType = 123;
+    String catchDescriptor = "123";
+
+    Handler handler = new Handler(startPc, endPc, handlerPc, catchType, catchDescriptor);
+
+    assertEquals(startPc, handler.startPc);
+    assertEquals(endPc, handler.endPc);
+    assertEquals(handlerPc, handler.handlerPc);
+    assertEquals(catchType, handler.catchType);
+    assertEquals(catchDescriptor, handler.catchTypeDescriptor);
+  }
+
+  @Test
+  void testCopyConstructor() {
+    Label startPc1 = new Label();
+    Label endPc1 = new Label();
+    Label handlerPc = new Label();
+    int catchType = 123;
+    String catchDescriptor = "123";
+    Handler handler1 = new Handler(startPc1, endPc1, handlerPc, catchType, catchDescriptor);
+    Label startPc2 = new Label();
+    Label endPc2 = new Label();
+
+    Handler handler2 = new Handler(handler1, startPc2, endPc2);
+
+    assertEquals(startPc2, handler2.startPc);
+    assertEquals(endPc2, handler2.endPc);
+    assertEquals(handlerPc, handler2.handlerPc);
+    assertEquals(catchType, handler2.catchType);
+    assertEquals(catchDescriptor, handler2.catchTypeDescriptor);
+  }
+
+  @Test
+  void testRemoveRange_removeAllOrNothing() {
+    Handler handler = newHandler(10, 20);
+
+    assertEquals(null, Handler.removeRange(null, newLabel(0), newLabel(10)));
+    assertEquals(handler, Handler.removeRange(handler, newLabel(0), newLabel(10)));
+    assertEquals(handler, Handler.removeRange(handler, newLabel(20), newLabel(30)));
+    assertEquals(handler, Handler.removeRange(handler, newLabel(20), null));
+    assertEquals(null, Handler.removeRange(handler, newLabel(0), newLabel(30)));
+  }
+
+  @Test
+  void testRemoveRange_removeStart() {
+    Handler handler = Handler.removeRange(newHandler(10, 20), newLabel(0), newLabel(15));
+
+    assertEquals(15, handler.startPc.bytecodeOffset);
+    assertEquals(20, handler.endPc.bytecodeOffset);
+    assertEquals(null, handler.nextHandler);
+  }
+
+  @Test
+  void testRemoveRange_removeEnd() {
+    Handler handler = Handler.removeRange(newHandler(10, 20), newLabel(15), newLabel(30));
+
+    assertEquals(10, handler.startPc.bytecodeOffset);
+    assertEquals(15, handler.endPc.bytecodeOffset);
+    assertEquals(null, handler.nextHandler);
+  }
+
+  @Test
+  void testRemoveRange_removeMiddle() {
+    Handler handler = Handler.removeRange(newHandler(10, 20), newLabel(13), newLabel(17));
+
+    assertEquals(10, handler.startPc.bytecodeOffset);
+    assertEquals(13, handler.endPc.bytecodeOffset);
+    assertEquals(17, handler.nextHandler.startPc.bytecodeOffset);
+    assertEquals(20, handler.nextHandler.endPc.bytecodeOffset);
+    assertEquals(null, handler.nextHandler.nextHandler);
+  }
+
+  @Test
+  void testGetExceptionTableLength() {
+    Handler handler = newHandler(10, 20);
+
+    assertEquals(0, Handler.getExceptionTableLength(null));
+    assertEquals(1, Handler.getExceptionTableLength(handler));
+  }
+
+  @Test
+  void testGetExceptionTableSize() {
+    Handler handlerList = Handler.removeRange(newHandler(10, 20), newLabel(13), newLabel(17));
+
+    assertEquals(2, Handler.getExceptionTableSize(null));
+    assertEquals(18, Handler.getExceptionTableSize(handlerList));
+  }
+
+  @Test
+  void testPutExceptionTable() {
+    Handler handlerList = Handler.removeRange(newHandler(10, 20), newLabel(13), newLabel(17));
+    ByteVector byteVector = new ByteVector();
+
+    Handler.putExceptionTable(handlerList, byteVector);
+
+    assertEquals(18, byteVector.length);
+  }
+
+  private static Handler newHandler(final int startPc, final int endPc) {
+    return new Handler(newLabel(startPc), newLabel(endPc), newLabel(0), 0, "");
+  }
+
+  private static Label newLabel(final int bytecodeOffset) {
+    Label label = new Label();
+    label.bytecodeOffset = bytecodeOffset;
+    return label;
+  }
+}