MaterialDesignIcons { @NotNull public static Collection<String> getCategories() { return getCategories(getResourceUrl(PATH)); } private  MaterialDesignIcons(); @Nullable static String getPathForBasename(@NotNull String basename); @NotNull static Collection<String> getCategories(); @NotNull static List<String> getIconNames(@NotNull String categoryName); @NotNull static URL getIcon(@NotNull String iconName, @NotNull String categoryName); @NotNull static URL getDefaultIcon();  }
@Test public void getCategoriesNullUrl() { assertEquals(Collections.emptyList(), MaterialDesignIcons.getCategories(null)); }
@Test public void getCategoriesUrlProtocolEqualsHttps() throws MalformedURLException { Object actual = MaterialDesignIcons.getCategories(new URL("https: assertEquals(Collections.emptyList(), actual); }