Vendor dependencies

Let's see how I like this workflow.

vendor/tui/tests/widgets_tabs.rs

@@ -0,0 +1,48 @@
+use tui::{
+    backend::TestBackend, buffer::Buffer, layout::Rect, symbols, text::Spans, widgets::Tabs,
+    Terminal,
+};
+
+#[test]
+fn widgets_tabs_should_not_panic_on_narrow_areas() {
+    let backend = TestBackend::new(1, 1);
+    let mut terminal = Terminal::new(backend).unwrap();
+    terminal
+        .draw(|f| {
+            let tabs = Tabs::new(["Tab1", "Tab2"].iter().cloned().map(Spans::from).collect());
+            f.render_widget(
+                tabs,
+                Rect {
+                    x: 0,
+                    y: 0,
+                    width: 1,
+                    height: 1,
+                },
+            );
+        })
+        .unwrap();
+    let expected = Buffer::with_lines(vec![" "]);
+    terminal.backend().assert_buffer(&expected);
+}
+
+#[test]
+fn widgets_tabs_should_truncate_the_last_item() {
+    let backend = TestBackend::new(10, 1);
+    let mut terminal = Terminal::new(backend).unwrap();
+    terminal
+        .draw(|f| {
+            let tabs = Tabs::new(["Tab1", "Tab2"].iter().cloned().map(Spans::from).collect());
+            f.render_widget(
+                tabs,
+                Rect {
+                    x: 0,
+                    y: 0,
+                    width: 9,
+                    height: 1,
+                },
+            );
+        })
+        .unwrap();
+    let expected = Buffer::with_lines(vec![format!(" Tab1 {} T ", symbols::line::VERTICAL)]);
+    terminal.backend().assert_buffer(&expected);
+}