ColumnReference implements Expression { public void visit(ExpressionVisitor visitor) { visitor.visit(this); } ColumnReference(TableReference tableReference,
                         Column<T> column); void visit(ExpressionVisitor visitor); Class<T> typeConstraint(); Iterable<Expression> children(); int compareTo(Expression e); boolean equals(Object o); int hashCode(); final TableReference tableReference; final Column<T> column; }
@Test public void visitVisits() { ExpressionVisitor visitor = mock(ExpressionVisitor.class); colRef.visit(visitor); verify(visitor).visit(colRef); }