Added unit tests for all the new widgets

src/ui/widgets/loading_block_tests.rs

@@ -0,0 +1,14 @@
+#[cfg(test)]
+mod tests {
+  use crate::ui::utils::layout_block;
+  use crate::ui::widgets::loading_block::LoadingBlock;
+  use pretty_assertions::assert_eq;
+
+  #[test]
+  fn test_loading_block_new() {
+    let loading_block = LoadingBlock::new(true, layout_block());
+
+    assert_eq!(loading_block.is_loading, true);
+    assert_eq!(loading_block.block, layout_block());
+  }
+}