### Question:
DropDownTextField extends JTextField implements GComponent { public void setMatchingWindowHeight(int height) { matchingWindowHeight = height; if (matchingWindow == null) { return; } updateDisplayLocation(getMatchingWindow().isShowing()); } DropDownTextField(DropDownTextFieldDataModel<T> dataModel);  DropDownTextField(DropDownTextFieldDataModel<T> dataModel, int updateMinDelay); @Override void setText(String text); boolean isMatchingListShowing(); void setConsumeEnterKeyPress(boolean consume); void setIgnoreEnterKeyPress(boolean ignore); void setMatchingWindowHeight(int height); void addDropDownSelectionChoiceListener(DropDownSelectionChoiceListener<T> listener); void addCellEditorListener(CellEditorListener listener); void removeCellEditorListener(CellEditorListener listener); T getSelectedValue(); void setSelectedValue(T value); void closeDropDownWindow();  }### Answer:
@Test public void testSetMatchingWindowHeight() { int newSize = 200; runSwing(() -> textField.setMatchingWindowHeight(newSize)); waitForSwing(); typeText("d", true); JWindow matchingWindow = textField.getActiveMatchingWindow(); Dimension windowSize = matchingWindow.getSize(); assertEquals(newSize, windowSize.height); }