### Question:
SQLColumn extends SQLCompletion { public String[] getCompletions(int position) { SQLSchema.Table table = null; if(qualifier != null) { table = getStatement().getTableForAlias(qualifier); if(table == null) table = getStatement().getTable(null, null, qualifier); } else table = getStatement().getTable(); if(table != null) { String col = null; if(name != null && position > namePos) { col = position <= endPosition ? name.substring(0, position-namePos) : name; } String[] result = table.getColumns(col); return (col != null && result.length == 1 && result[0].length() == col.length()) ? EMPTY_RESULT : result; } else return EMPTY_RESULT; } SQLColumn(SQLStatementContext parent,  int start);  SQLColumn(SQLStatementContext parent, int start, int end);  SQLColumn(SQLStatementContext parent); void setQualifier(String alias, int pos); void setQualifier(String alias); String getQualifier(); void setColumn(String name, int pos); void setName(String name); String getName(); boolean hasTable(int position); SQLStatement getStatement(); String getText(); String getText(int position); String getText(int position, String option); String[] getCompletions(int position); void setRepeatable(boolean repeatable); boolean isRepeatable(); boolean mustReplace(int position);  }### Answer:
@Test public void testGetCompletions() throws Exception { mockHelper.replayAll(); assertNotNull(classUnderTest.getCompletions(10)); mockHelper.verifyAll(); }