add some unit tests to check ratatui support

because doctests are run with tui-rs

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
         if: ${{ matrix.os != 'windows-latest' }}
       - run: cargo test --features=search -- --skip src\lib.rs
         if: ${{ matrix.os == 'windows-latest' }}
-      - run: cargo test --no-default-features --features=ratatui-crossterm,search -- --skip src
+      - run: cargo test --no-default-features --features=ratatui-crossterm,search -- --skip .rs
   lint:
     runs-on: ubuntu-latest
     steps:

src/cursor.rs

@@ -321,3 +321,31 @@ impl CursorMove {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    // Seaparate tests for ratatui support
+    #[test]
+    fn in_viewport() {
+        use crate::tui::buffer::Buffer;
+        use crate::tui::layout::Rect;
+        use crate::tui::widgets::Widget;
+        use crate::{CursorMove, TextArea};
+
+        let mut textarea: TextArea = (0..20).into_iter().map(|i| i.to_string()).collect();
+        let r = Rect {
+            x: 0,
+            y: 0,
+            width: 24,
+            height: 8,
+        };
+        let mut b = Buffer::empty(r.clone());
+        textarea.widget().render(r, &mut b);
+
+        textarea.move_cursor(CursorMove::Bottom);
+        assert_eq!(textarea.cursor(), (19, 0));
+
+        textarea.move_cursor(CursorMove::InViewport);
+        assert_eq!(textarea.cursor(), (7, 0));
+    }
+}

src/scroll.rs

@@ -178,3 +178,33 @@ impl From<(i16, i16)> for Scrolling {
         Self::Delta { rows, cols }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // Seaparate tests for ratatui support
+    #[test]
+    fn delta() {
+        use crate::tui::buffer::Buffer;
+        use crate::tui::layout::Rect;
+        use crate::tui::widgets::Widget;
+        use crate::TextArea;
+
+        let mut textarea: TextArea = (0..20).into_iter().map(|i| i.to_string()).collect();
+        let r = Rect {
+            x: 0,
+            y: 0,
+            width: 24,
+            height: 8,
+        };
+        let mut b = Buffer::empty(r.clone());
+        textarea.widget().render(r, &mut b);
+
+        textarea.scroll(Scrolling::Delta { rows: 2, cols: 0 });
+        assert_eq!(textarea.cursor(), (2, 0));
+
+        textarea.scroll((1, 0));
+        assert_eq!(textarea.cursor(), (3, 0));
+    }
+}

src/textarea.rs

@@ -1597,3 +1597,33 @@ impl<'a> TextArea<'a> {
         self.move_cursor(CursorMove::InViewport);
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // Seaparate tests for ratatui support
+    #[test]
+    fn scroll() {
+        use crate::tui::buffer::Buffer;
+        use crate::tui::layout::Rect;
+        use crate::tui::widgets::Widget;
+
+        let mut textarea: TextArea = (0..20).into_iter().map(|i| i.to_string()).collect();
+        let r = Rect {
+            x: 0,
+            y: 0,
+            width: 24,
+            height: 8,
+        };
+        let mut b = Buffer::empty(r.clone());
+        textarea.widget().render(r, &mut b);
+
+        textarea.scroll((15, 0));
+        assert_eq!(textarea.cursor(), (15, 0));
+        textarea.scroll((-5, 0));
+        assert_eq!(textarea.cursor(), (15, 0));
+        textarea.scroll((-5, 0));
+        assert_eq!(textarea.cursor(), (12, 0));
+    }
+}