WebBrowser implements Serializable { public boolean isLinux() { if (browserDetails == null) { return false; } return browserDetails.isLinux(); }  String getBrowserApplication(); String getAddress(); Locale getLocale(); boolean isSecureConnection(); boolean isFirefox(); boolean isIE(); boolean isEdge(); boolean isSafari(); boolean isOpera(); boolean isChrome(); int getBrowserMajorVersion(); int getBrowserMinorVersion(); boolean isLinux(); boolean isMacOSX(); boolean isWindows(); boolean isWindowsPhone(); boolean isAndroid(); boolean isIPhone(); boolean isChromeOS(); void updateRequestDetails(VaadinRequest request); boolean isTooOldToFunctionProperly();  }
@Test public void isLinux_noDetails_returnsFalse() { Assert.assertFalse(browser.isLinux()); }