### Question:
RendererUtils { public static Group getExpressionHeaderText(final EditableHeaderMetaData headerMetaData, final GridHeaderColumnRenderContext context) { final GridRenderer gridRenderer = context.getRenderer(); final GridRendererTheme theme = gridRenderer.getTheme(); return getExpressionText(theme, headerMetaData.getTitle()); }  static Group getExpressionCellText(final GridBodyCellRenderContext context,
                                              final GridCell<String> gridCell); static Group getCenteredCellText(final GridBodyCellRenderContext context,
                                            final GridCell<String> gridCell); static Group getNameAndDataTypeCellText(final InformationItemCell.HasNameAndDataTypeCell hasNameAndDataTypeCell,
                                                   final GridBodyCellRenderContext context); static Group getExpressionHeaderText(final EditableHeaderMetaData headerMetaData,
                                                final GridHeaderColumnRenderContext context); static Group getValueAndDataTypeHeaderText(final ValueAndDataTypeHeaderMetaData headerMetaData,
                                                      final GridHeaderColumnRenderContext context,
                                                      final double blockWidth,
                                                      final double blockHeight); static Group getEditableHeaderText(final EditableHeaderMetaData headerMetaData,
                                              final GridHeaderColumnRenderContext context,
                                              final double blockWidth,
                                              final double blockHeight); static Group getEditableHeaderPlaceHolderText(final EditableHeaderMetaData headerMetaData,
                                                         final GridHeaderColumnRenderContext context,
                                                         final double blockWidth,
                                                         final double blockHeight); static double getExpressionTextLineHeight(final GridRendererTheme theme); static final double EXPRESSION_TEXT_PADDING; static final String FONT_STYLE_TYPE_REF; static final double SPACING; }### Answer:
@Test public void testRenderExpressionHeaderText() throws Exception { when(headerMetaData.getTitle()).thenReturn(VALUE); RendererUtils.getExpressionHeaderText(headerMetaData, headerContext); assertExpressionRendering(); }