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    * Licensed to the Apache Software Foundation (ASF) under one
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    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
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    *
   *   https://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
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  package org.apache.bcel.verifier.structurals;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import org.apache.bcel.classfile.Constant;
  import org.apache.bcel.generic.ConstantPoolGen;
  import org.apache.bcel.generic.LDC;
  import org.apache.bcel.verifier.exc.CodeConstraintException;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.MethodSource;
  
  class InstConstraintVisitorTest {
  
      private ConstantPoolGen cp;
  
      @ParameterizedTest
      @MethodSource("org.apache.bcel.verifier.statics.Pass3aVerifierTest#constantsNotSupportedByLdc")
      public void rejectLdcConstantModule(final Constant constant) {
          final InstConstraintVisitor visitor = new InstConstraintVisitor();
          cp = mock(ConstantPoolGen.class);
          when(cp.getConstant(0)).thenReturn(constant);
          visitor.setConstantPoolGen(cp);
          final LDC ldc = new LDC(0);
          assertTrue(assertThrows(CodeConstraintException.class, () -> visitor.visitLDC(ldc)).getMessage()
                  .startsWith("Instruction LDC constraint violated: Referenced constant should be a"));
      }
  
      @BeforeEach
      public void setup() {
          cp = mock(ConstantPoolGen.class);
      }
  }