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  package org.apache.cayenne.exp.parser;
  
  import java.io.IOException;
  
  import org.apache.cayenne.exp.Expression;
  import org.apache.cayenne.exp.ExpressionFactory;
  import org.junit.Test;
  
  import static org.hamcrest.CoreMatchers.instanceOf;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.junit.Assert.*;
  
  /**
   * @since 4.2
   */
  public class ASTDbIdPathTest {
  
      @Test
      public void testShallowCopy() {
          ASTDbIdPath path = new ASTDbIdPath("test");
  
          Expression exp = path.shallowCopy();
          assertEquals(exp.getType(), Expression.DBID_PATH);
          assertThat(exp, instanceOf(ASTDbIdPath.class));
  
          ASTDbIdPath clone = (ASTDbIdPath)exp;
          assertEquals("test", clone.getPath().value());
      }
  
      @Test
      public void testAppendAsString() throws IOException {
          ASTDbIdPath path = new ASTDbIdPath("test");
          StringBuilder sb = new StringBuilder();
          path.appendAsString(sb);
  
          assertEquals("dbid:test", sb.toString());
      }
  
      @Test
      public void testSimpleParse() {
          Expression exp = ExpressionFactory.exp("dbid:test");
          assertThat(exp, instanceOf(ASTDbIdPath.class));
          ASTDbIdPath path = (ASTDbIdPath)exp;
          assertEquals("test", path.getPath().value());
      }
  
      @Test
      public void testExpParse() {
          Expression exp = ExpressionFactory.exp("dbid:test = 1");
          assertThat(exp, instanceOf(ASTEqual.class));
          ASTEqual equal = (ASTEqual)exp;
  
          Node child0 = equal.jjtGetChild(0);
          assertThat(child0, instanceOf(ASTDbIdPath.class));
          ASTDbIdPath path = (ASTDbIdPath)child0;
          assertEquals("test", path.getPath().value());
      }
  
  }