chore(traits): add Display and FromStr traits (#425)

Use strum for most of these, with a couple of manual implementations,
and related tests

Cargo.toml

@@ -43,6 +43,7 @@ indoc = "2.0"
 itertools = "0.11"
 paste = "1.0.2"
 serde = { version = "1", optional = true, features = ["derive"] }
+strum = { version = "0.25", features = ["derive"] }
 termion = { version = "2.0", optional = true }
 termwiz = { version = "0.20.0", optional = true }
 time = { version = "0.3.11", optional = true, features = ["local-offset"] }

src/backend/mod.rs

@@ -27,6 +27,8 @@
 
 use std::io;
 
+use strum::{Display, EnumString};
+
 use crate::{buffer::Cell, layout::Rect};
 
 #[cfg(feature = "termion")]
@@ -49,7 +51,7 @@ pub use self::test::TestBackend;
 
 /// Enum representing the different types of clearing operations that can be performed
 /// on the terminal screen.
-#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum ClearType {
     All,
     AfterCursor,
@@ -115,3 +117,41 @@ pub trait Backend {
     /// Flush any buffered content to the terminal screen.
     fn flush(&mut self) -> Result<(), io::Error>;
 }
+
+#[cfg(test)]
+mod tests {
+    use strum::ParseError;
+
+    use super::*;
+
+    #[test]
+    fn clear_type_tostring() {
+        assert_eq!(ClearType::All.to_string(), "All");
+        assert_eq!(ClearType::AfterCursor.to_string(), "AfterCursor");
+        assert_eq!(ClearType::BeforeCursor.to_string(), "BeforeCursor");
+        assert_eq!(ClearType::CurrentLine.to_string(), "CurrentLine");
+        assert_eq!(ClearType::UntilNewLine.to_string(), "UntilNewLine");
+    }
+
+    #[test]
+    fn clear_type_from_str() {
+        assert_eq!("All".parse::<ClearType>(), Ok(ClearType::All));
+        assert_eq!(
+            "AfterCursor".parse::<ClearType>(),
+            Ok(ClearType::AfterCursor)
+        );
+        assert_eq!(
+            "BeforeCursor".parse::<ClearType>(),
+            Ok(ClearType::BeforeCursor)
+        );
+        assert_eq!(
+            "CurrentLine".parse::<ClearType>(),
+            Ok(ClearType::CurrentLine)
+        );
+        assert_eq!(
+            "UntilNewLine".parse::<ClearType>(),
+            Ok(ClearType::UntilNewLine)
+        );
+        assert_eq!("".parse::<ClearType>(), Err(ParseError::VariantNotFound));
+    }
+}

src/layout.rs

@@ -2,6 +2,7 @@ use std::{
     cell::RefCell,
     cmp::{max, min},
     collections::HashMap,
+    fmt,
     rc::Rc,
 };
 
@@ -11,8 +12,9 @@ use cassowary::{
     WeightedRelation::{EQ, GE, LE},
 };
 use itertools::Itertools;
+use strum::{Display, EnumString};
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum Corner {
     #[default]
     TopLeft,
@@ -21,7 +23,7 @@ pub enum Corner {
     BottomLeft,
 }
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum Direction {
     Horizontal,
     #[default]
@@ -97,6 +99,18 @@ impl Default for Constraint {
     }
 }
 
+impl fmt::Display for Constraint {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Constraint::Percentage(p) => write!(f, "Percentage({})", p),
+            Constraint::Ratio(n, d) => write!(f, "Ratio({}, {})", n, d),
+            Constraint::Length(l) => write!(f, "Length({})", l),
+            Constraint::Max(m) => write!(f, "Max({})", m),
+            Constraint::Min(m) => write!(f, "Min({})", m),
+        }
+    }
+}
+
 impl Constraint {
     pub fn apply(&self, length: u16) -> u16 {
         match *self {
@@ -121,11 +135,26 @@ impl Constraint {
 
 #[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
 pub struct Margin {
-    pub vertical: u16,
     pub horizontal: u16,
+    pub vertical: u16,
 }
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+impl Margin {
+    pub const fn new(horizontal: u16, vertical: u16) -> Margin {
+        Margin {
+            horizontal,
+            vertical,
+        }
+    }
+}
+
+impl fmt::Display for Margin {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}x{}", self.horizontal, self.vertical)
+    }
+}
+
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum Alignment {
     #[default]
     Left,
@@ -144,6 +173,12 @@ pub struct Rect {
     pub height: u16,
 }
 
+impl fmt::Display for Rect {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}x{}+{}+{}", self.width, self.height, self.x, self.y)
+    }
+}
+
 impl Rect {
     /// Creates a new rect, with width and height limited to keep the area under max u16.
     /// If clipped, aspect ratio will be preserved.
@@ -234,8 +269,8 @@ impl Rect {
     }
 }
 
-#[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Eq, PartialEq, Hash)]
-pub enum SegmentSize {
+pub(crate) enum SegmentSize {
     EvenDistribution,
     #[default]
     LastTakesRemainder,
@@ -614,9 +649,181 @@ fn try_split(area: Rect, layout: &Layout) -> Result<Rc<[Rect]>, AddConstraintErr
 
 #[cfg(test)]
 mod tests {
+    use strum::ParseError;
+
     use super::{SegmentSize::*, *};
     use crate::prelude::Constraint::*;
 
+    #[test]
+    fn corner_to_string() {
+        assert_eq!(Corner::BottomLeft.to_string(), "BottomLeft");
+        assert_eq!(Corner::BottomRight.to_string(), "BottomRight");
+        assert_eq!(Corner::TopLeft.to_string(), "TopLeft");
+        assert_eq!(Corner::TopRight.to_string(), "TopRight");
+    }
+
+    #[test]
+    fn corner_from_str() {
+        assert_eq!("BottomLeft".parse::<Corner>(), Ok(Corner::BottomLeft));
+        assert_eq!("BottomRight".parse::<Corner>(), Ok(Corner::BottomRight));
+        assert_eq!("TopLeft".parse::<Corner>(), Ok(Corner::TopLeft));
+        assert_eq!("TopRight".parse::<Corner>(), Ok(Corner::TopRight));
+        assert_eq!("".parse::<Corner>(), Err(ParseError::VariantNotFound));
+    }
+
+    #[test]
+    fn direction_to_string() {
+        assert_eq!(Direction::Horizontal.to_string(), "Horizontal");
+        assert_eq!(Direction::Vertical.to_string(), "Vertical");
+    }
+
+    #[test]
+    fn direction_from_str() {
+        assert_eq!("Horizontal".parse::<Direction>(), Ok(Direction::Horizontal));
+        assert_eq!("Vertical".parse::<Direction>(), Ok(Direction::Vertical));
+        assert_eq!("".parse::<Direction>(), Err(ParseError::VariantNotFound));
+    }
+
+    #[test]
+    fn constraint_to_string() {
+        assert_eq!(Constraint::Percentage(50).to_string(), "Percentage(50)");
+        assert_eq!(Constraint::Ratio(1, 2).to_string(), "Ratio(1, 2)");
+        assert_eq!(Constraint::Length(10).to_string(), "Length(10)");
+        assert_eq!(Constraint::Max(10).to_string(), "Max(10)");
+        assert_eq!(Constraint::Min(10).to_string(), "Min(10)");
+    }
+
+    #[test]
+    fn margin_to_string() {
+        assert_eq!(Margin::new(1, 2).to_string(), "1x2");
+    }
+
+    #[test]
+    fn margin_new() {
+        assert_eq!(
+            Margin::new(1, 2),
+            Margin {
+                horizontal: 1,
+                vertical: 2
+            }
+        );
+    }
+
+    #[test]
+    fn alignment_to_string() {
+        assert_eq!(Alignment::Left.to_string(), "Left");
+        assert_eq!(Alignment::Center.to_string(), "Center");
+        assert_eq!(Alignment::Right.to_string(), "Right");
+    }
+
+    #[test]
+    fn alignment_from_str() {
+        assert_eq!("Left".parse::<Alignment>(), Ok(Alignment::Left));
+        assert_eq!("Center".parse::<Alignment>(), Ok(Alignment::Center));
+        assert_eq!("Right".parse::<Alignment>(), Ok(Alignment::Right));
+        assert_eq!("".parse::<Alignment>(), Err(ParseError::VariantNotFound));
+    }
+
+    #[test]
+    fn rect_to_string() {
+        assert_eq!(Rect::new(1, 2, 3, 4).to_string(), "3x4+1+2");
+    }
+
+    #[test]
+    fn rect_new() {
+        assert_eq!(
+            Rect::new(1, 2, 3, 4),
+            Rect {
+                x: 1,
+                y: 2,
+                width: 3,
+                height: 4
+            }
+        );
+    }
+
+    #[test]
+    fn rect_area() {
+        assert_eq!(Rect::new(1, 2, 3, 4).area(), 12);
+    }
+
+    #[test]
+    fn rect_left() {
+        assert_eq!(Rect::new(1, 2, 3, 4).left(), 1);
+    }
+
+    #[test]
+    fn rect_right() {
+        assert_eq!(Rect::new(1, 2, 3, 4).right(), 4);
+    }
+
+    #[test]
+    fn rect_top() {
+        assert_eq!(Rect::new(1, 2, 3, 4).top(), 2);
+    }
+
+    #[test]
+    fn rect_bottom() {
+        assert_eq!(Rect::new(1, 2, 3, 4).bottom(), 6);
+    }
+
+    #[test]
+    fn rect_inner() {
+        assert_eq!(
+            Rect::new(1, 2, 3, 4).inner(&Margin::new(1, 2)),
+            Rect::new(2, 4, 1, 0)
+        );
+    }
+
+    #[test]
+    fn rect_union() {
+        assert_eq!(
+            Rect::new(1, 2, 3, 4).union(Rect::new(2, 3, 4, 5)),
+            Rect::new(1, 2, 5, 6)
+        );
+    }
+
+    #[test]
+    fn rect_intersection() {
+        assert_eq!(
+            Rect::new(1, 2, 3, 4).intersection(Rect::new(2, 3, 4, 5)),
+            Rect::new(2, 3, 2, 3)
+        );
+    }
+
+    #[test]
+    fn rect_intersects() {
+        assert!(Rect::new(1, 2, 3, 4).intersects(Rect::new(2, 3, 4, 5)));
+        assert!(!Rect::new(1, 2, 3, 4).intersects(Rect::new(5, 6, 7, 8)));
+    }
+
+    #[test]
+    fn segment_size_to_string() {
+        assert_eq!(
+            SegmentSize::EvenDistribution.to_string(),
+            "EvenDistribution"
+        );
+        assert_eq!(
+            SegmentSize::LastTakesRemainder.to_string(),
+            "LastTakesRemainder"
+        );
+        assert_eq!(SegmentSize::None.to_string(), "None");
+    }
+
+    #[test]
+    fn segment_size_from_string() {
+        assert_eq!(
+            "EvenDistribution".parse::<SegmentSize>(),
+            Ok(EvenDistribution)
+        );
+        assert_eq!(
+            "LastTakesRemainder".parse::<SegmentSize>(),
+            Ok(LastTakesRemainder)
+        );
+        assert_eq!("None".parse::<SegmentSize>(), Ok(None));
+        assert_eq!("".parse::<SegmentSize>(), Err(ParseError::VariantNotFound));
+    }
+
     fn get_x_width_with_segment_size(
         segment_size: SegmentSize,
         constraints: Vec<Constraint>,

src/symbols.rs

@@ -1,3 +1,5 @@
+use strum::{Display, EnumString};
+
 pub mod block {
     pub const FULL: &str = "█";
     pub const SEVEN_EIGHTHS: &str = "▉";
@@ -240,7 +242,7 @@ pub mod braille {
 }
 
 /// Marker to use when plotting data points
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum Marker {
     /// One point per cell in shape of dot
     #[default]
@@ -301,3 +303,27 @@ pub mod scrollbar {
         end: "→",
     };
 }
+
+#[cfg(test)]
+mod tests {
+    use strum::ParseError;
+
+    use super::*;
+
+    #[test]
+    fn marker_tostring() {
+        assert_eq!(Marker::Dot.to_string(), "Dot");
+        assert_eq!(Marker::Block.to_string(), "Block");
+        assert_eq!(Marker::Bar.to_string(), "Bar");
+        assert_eq!(Marker::Braille.to_string(), "Braille");
+    }
+
+    #[test]
+    fn marker_from_str() {
+        assert_eq!("Dot".parse::<Marker>(), Ok(Marker::Dot));
+        assert_eq!("Block".parse::<Marker>(), Ok(Marker::Block));
+        assert_eq!("Bar".parse::<Marker>(), Ok(Marker::Bar));
+        assert_eq!("Braille".parse::<Marker>(), Ok(Marker::Braille));
+        assert_eq!("".parse::<Marker>(), Err(ParseError::VariantNotFound));
+    }
+}

src/terminal.rs

@@ -1,4 +1,4 @@
-use std::io;
+use std::{fmt, io};
 
 use crate::{
     backend::{Backend, ClearType},
@@ -15,6 +15,16 @@ pub enum Viewport {
     Fixed(Rect),
 }
 
+impl fmt::Display for Viewport {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Viewport::Fullscreen => write!(f, "Fullscreen"),
+            Viewport::Inline(height) => write!(f, "Inline({})", height),
+            Viewport::Fixed(area) => write!(f, "Fixed({})", area),
+        }
+    }
+}
+
 /// Options to pass to [`Terminal::with_options`]
 #[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
 pub struct TerminalOptions {
@@ -487,3 +497,18 @@ fn compute_inline_size<B: Backend>(
         pos,
     ))
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn viewport_to_string() {
+        assert_eq!(Viewport::Fullscreen.to_string(), "Fullscreen");
+        assert_eq!(Viewport::Inline(5).to_string(), "Inline(5)");
+        assert_eq!(
+            Viewport::Fixed(Rect::new(0, 0, 5, 5)).to_string(),
+            "Fixed(5x5+0+0)"
+        );
+    }
+}

src/title.rs

@@ -1,3 +1,5 @@
+use strum::{Display, EnumString};
+
 use crate::{layout::Alignment, text::Line};
 
 #[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
@@ -10,7 +12,7 @@ pub struct Title<'a> {
     pub position: Option<Position>,
 }
 
-#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Position {
     #[default]
     Top,
@@ -45,3 +47,23 @@ where
         Self::default().content(value.into())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use strum::ParseError;
+
+    use super::*;
+
+    #[test]
+    fn position_tostring() {
+        assert_eq!(Position::Top.to_string(), "Top");
+        assert_eq!(Position::Bottom.to_string(), "Bottom");
+    }
+
+    #[test]
+    fn position_from_str() {
+        assert_eq!("Top".parse::<Position>(), Ok(Position::Top));
+        assert_eq!("Bottom".parse::<Position>(), Ok(Position::Bottom));
+        assert_eq!("".parse::<Position>(), Err(ParseError::VariantNotFound));
+    }
+}

src/widgets/block.rs

@@ -1,6 +1,8 @@
 #[path = "../title.rs"]
 pub mod title;
 
+use strum::{Display, EnumString};
+
 pub use self::title::{Position, Title};
 use crate::{
     buffer::Buffer,
@@ -10,7 +12,7 @@ use crate::{
     widgets::{Borders, Widget},
 };
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum BorderType {
     #[default]
     Plain,
@@ -526,6 +528,8 @@ impl<'a> Styled for Block<'a> {
 
 #[cfg(test)]
 mod tests {
+    use strum::ParseError;
+
     use super::*;
     use crate::{
         assert_buffer_eq,
@@ -985,4 +989,19 @@ mod tests {
             assert_buffer_eq!(buffer, expected_buffer);
         }
     }
+
+    #[test]
+    fn border_type_to_string() {
+        assert_eq!(format!("{}", BorderType::Plain), "Plain");
+        assert_eq!(format!("{}", BorderType::Rounded), "Rounded");
+        assert_eq!(format!("{}", BorderType::Double), "Double");
+    }
+
+    #[test]
+    fn border_type_from_str() {
+        assert_eq!("Plain".parse(), Ok(BorderType::Plain));
+        assert_eq!("Rounded".parse(), Ok(BorderType::Rounded));
+        assert_eq!("Double".parse(), Ok(BorderType::Double));
+        assert_eq!("".parse::<BorderType>(), Err(ParseError::VariantNotFound));
+    }
 }

src/widgets/canvas/map.rs

@@ -1,3 +1,5 @@
+use strum::{Display, EnumString};
+
 use crate::{
     style::Color,
     widgets::canvas::{
@@ -6,7 +8,7 @@ use crate::{
     },
 };
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum MapResolution {
     #[default]
     Low,
@@ -38,3 +40,26 @@ impl Shape for Map {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use strum::ParseError;
+
+    use super::*;
+
+    #[test]
+    fn map_resolution_to_string() {
+        assert_eq!(MapResolution::Low.to_string(), "Low");
+        assert_eq!(MapResolution::High.to_string(), "High");
+    }
+
+    #[test]
+    fn map_resolution_from_str() {
+        assert_eq!("Low".parse(), Ok(MapResolution::Low));
+        assert_eq!("High".parse(), Ok(MapResolution::High));
+        assert_eq!(
+            "".parse::<MapResolution>(),
+            Err(ParseError::VariantNotFound)
+        );
+    }
+}

src/widgets/chart.rs

@@ -1,5 +1,6 @@
 use std::{borrow::Cow, cmp::max};
 
+use strum::{Display, EnumString};
 use unicode_width::UnicodeWidthStr;
 
 use crate::{
@@ -76,7 +77,7 @@ impl<'a> Axis<'a> {
 }
 
 /// Used to determine which style of graphing to use
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum GraphType {
     /// Draw each point
     #[default]
@@ -627,6 +628,8 @@ impl<'a> Styled for Chart<'a> {
 
 #[cfg(test)]
 mod tests {
+    use strum::ParseError;
+
     use super::*;
     use crate::style::{Modifier, Stylize};
 
@@ -702,4 +705,17 @@ mod tests {
                 .remove_modifier(Modifier::DIM)
         )
     }
+
+    #[test]
+    fn graph_type_to_string() {
+        assert_eq!(GraphType::Scatter.to_string(), "Scatter");
+        assert_eq!(GraphType::Line.to_string(), "Line");
+    }
+
+    #[test]
+    fn graph_type_from_str() {
+        assert_eq!("Scatter".parse::<GraphType>(), Ok(GraphType::Scatter));
+        assert_eq!("Line".parse::<GraphType>(), Ok(GraphType::Line));
+        assert_eq!("".parse::<GraphType>(), Err(ParseError::VariantNotFound));
+    }
 }

src/widgets/scrollbar.rs

@@ -1,3 +1,5 @@
+use strum::{Display, EnumString};
+
 use super::StatefulWidget;
 use crate::{
     buffer::Buffer,
@@ -7,7 +9,7 @@ use crate::{
 };
 
 /// An enum representing the direction of scrolling in a Scrollbar widget.
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum ScrollDirection {
     /// Forward scroll direction, usually corresponds to scrolling downwards or rightwards.
     #[default]
@@ -101,7 +103,7 @@ impl ScrollbarState {
 }
 
 /// Scrollbar Orientation
-#[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Eq, PartialEq, Hash)]
 pub enum ScrollbarOrientation {
     #[default]
     VerticalRight,
@@ -458,12 +460,80 @@ impl<'a> StatefulWidget for Scrollbar<'a> {
 
 #[cfg(test)]
 mod tests {
+    use strum::ParseError;
+
     use super::*;
     use crate::{
         assert_buffer_eq,
         symbols::scrollbar::{HORIZONTAL, VERTICAL},
     };
 
+    #[test]
+    fn scroll_direction_to_string() {
+        assert_eq!(ScrollDirection::Forward.to_string(), "Forward");
+        assert_eq!(ScrollDirection::Backward.to_string(), "Backward");
+    }
+
+    #[test]
+    fn scroll_direction_from_str() {
+        assert_eq!(
+            "Forward".parse::<ScrollDirection>(),
+            Ok(ScrollDirection::Forward)
+        );
+        assert_eq!(
+            "Backward".parse::<ScrollDirection>(),
+            Ok(ScrollDirection::Backward)
+        );
+        assert_eq!(
+            "".parse::<ScrollDirection>(),
+            Err(ParseError::VariantNotFound)
+        );
+    }
+
+    #[test]
+    fn scrollbar_orientation_to_string() {
+        assert_eq!(
+            ScrollbarOrientation::VerticalRight.to_string(),
+            "VerticalRight"
+        );
+        assert_eq!(
+            ScrollbarOrientation::VerticalLeft.to_string(),
+            "VerticalLeft"
+        );
+        assert_eq!(
+            ScrollbarOrientation::HorizontalBottom.to_string(),
+            "HorizontalBottom"
+        );
+        assert_eq!(
+            ScrollbarOrientation::HorizontalTop.to_string(),
+            "HorizontalTop"
+        );
+    }
+
+    #[test]
+    fn scrollbar_orientation_from_str() {
+        assert_eq!(
+            "VerticalRight".parse::<ScrollbarOrientation>(),
+            Ok(ScrollbarOrientation::VerticalRight)
+        );
+        assert_eq!(
+            "VerticalLeft".parse::<ScrollbarOrientation>(),
+            Ok(ScrollbarOrientation::VerticalLeft)
+        );
+        assert_eq!(
+            "HorizontalBottom".parse::<ScrollbarOrientation>(),
+            Ok(ScrollbarOrientation::HorizontalBottom)
+        );
+        assert_eq!(
+            "HorizontalTop".parse::<ScrollbarOrientation>(),
+            Ok(ScrollbarOrientation::HorizontalTop)
+        );
+        assert_eq!(
+            "".parse::<ScrollbarOrientation>(),
+            Err(ParseError::VariantNotFound)
+        );
+    }
+
     #[test]
     fn test_no_render_when_area_zero() {
         let mut buffer = Buffer::empty(Rect::new(0, 0, 0, 0));

src/widgets/sparkline.rs

@@ -1,5 +1,7 @@
 use std::cmp::min;
 
+use strum::{Display, EnumString};
+
 use crate::{
     buffer::Buffer,
     layout::Rect,
@@ -38,7 +40,7 @@ pub struct Sparkline<'a> {
     direction: RenderDirection,
 }
 
-#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Debug, Default, Display, EnumString, Clone, Copy, Eq, PartialEq, Hash)]
 pub enum RenderDirection {
     #[default]
     LeftToRight,
@@ -167,6 +169,8 @@ impl<'a> Widget for Sparkline<'a> {
 
 #[cfg(test)]
 mod tests {
+    use strum::ParseError;
+
     use super::*;
     use crate::{
         assert_buffer_eq,
@@ -174,6 +178,28 @@ mod tests {
         style::{Color, Modifier, Stylize},
     };
 
+    #[test]
+    fn render_direction_to_string() {
+        assert_eq!(RenderDirection::LeftToRight.to_string(), "LeftToRight");
+        assert_eq!(RenderDirection::RightToLeft.to_string(), "RightToLeft");
+    }
+
+    #[test]
+    fn render_direction_from_str() {
+        assert_eq!(
+            "LeftToRight".parse::<RenderDirection>(),
+            Ok(RenderDirection::LeftToRight)
+        );
+        assert_eq!(
+            "RightToLeft".parse::<RenderDirection>(),
+            Ok(RenderDirection::RightToLeft)
+        );
+        assert_eq!(
+            "".parse::<RenderDirection>(),
+            Err(ParseError::VariantNotFound)
+        );
+    }
+
     // Helper function to render a sparkline to a buffer with a given width
     // filled with x symbols to make it easier to assert on the result
     fn render(widget: Sparkline, width: u16) -> Buffer {

src/widgets/table.rs

@@ -1,3 +1,4 @@
+use strum::{Display, EnumString};
 use unicode_width::UnicodeWidthStr;
 
 use crate::{
@@ -161,7 +162,7 @@ impl<'a> Styled for Row<'a> {
 }
 
 /// This option allows the user to configure the "highlight symbol" column width spacing
-#[derive(Debug, PartialEq, Eq, Clone, Default, Hash)]
+#[derive(Debug, Display, EnumString, PartialEq, Eq, Clone, Default, Hash)]
 pub enum HighlightSpacing {
     /// Always add spacing for the selection symbol column
     ///
@@ -776,4 +777,34 @@ mod tests {
                 .remove_modifier(Modifier::CROSSED_OUT)
         )
     }
+
+    #[test]
+    fn highlight_spacing_to_string() {
+        assert_eq!(HighlightSpacing::Always.to_string(), "Always".to_string());
+        assert_eq!(
+            HighlightSpacing::WhenSelected.to_string(),
+            "WhenSelected".to_string()
+        );
+        assert_eq!(HighlightSpacing::Never.to_string(), "Never".to_string());
+    }
+
+    #[test]
+    fn highlight_spacing_from_str() {
+        assert_eq!(
+            "Always".parse::<HighlightSpacing>(),
+            Ok(HighlightSpacing::Always)
+        );
+        assert_eq!(
+            "WhenSelected".parse::<HighlightSpacing>(),
+            Ok(HighlightSpacing::WhenSelected)
+        );
+        assert_eq!(
+            "Never".parse::<HighlightSpacing>(),
+            Ok(HighlightSpacing::Never)
+        );
+        assert_eq!(
+            "".parse::<HighlightSpacing>(),
+            Err(strum::ParseError::VariantNotFound)
+        );
+    }
 }