Bug 281126 [CSS] Illegal state exc from tab-height
If you just type a space in the CSS Editors SWT example you will get traces in the console failing on CSSValue.getFloatValue() for tab-height.
tests/org.eclipse.e4.ui.tests.css.swt/src/org/eclipse/e4/ui/tests/css/swt/CTabFolderTest.java
assertNotSame(50, folderToTest.getTabHeight());
	}
	public void testSingle() throws Exception {
		CTabFolder folderToTest = createTestCTabFolder("CTabFolder { single: true}");
		assertEquals(true, folderToTest.getSingle());
		assertEquals("true", engine.retrieveCSSProperty(folderToTest, "single", null));
		folderToTest = createTestCTabFolder("CTabFolder { single: false}");
		assertEquals(false, folderToTest.getSingle());
		assertEquals("false", engine.retrieveCSSProperty(folderToTest, "single", null));
	}
	
	public void testShowClose() throws Exception {
		CTabFolder folderToTest = createTestCTabFolder("CTabFolder { show-close: true}");
		CTabItem[] itemList = folderToTest.getItems();
		for(CTabItem item: itemList){
			assertEquals(true, item.getShowClose());
		}
		assertEquals("true", engine.retrieveCSSProperty(folderToTest, "show-close", null));
		folderToTest = createTestCTabFolder("CTabFolder { show-close: false}");
		itemList = folderToTest.getItems();
		for(CTabItem item: itemList){
			assertEquals(false, item.getShowClose());
		}
		assertEquals(false, folderToTest.getSingle());
		assertEquals("false", engine.retrieveCSSProperty(folderToTest, "show-close", null));
	}
	
	public void testUnselectedCloseVisible() throws Exception {
		CTabFolder folderToTest = createTestCTabFolder("CTabFolder { unselected-close-visible: true}");
		assertEquals(true, folderToTest.getUnselectedCloseVisible());