✨ Alternate display for TextSurface, test Sender::draw

stackline/src/text.rs

@@ -133,16 +133,23 @@ impl std::fmt::Display for TextSurface {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         use colored::Colorize;
 
+        let alternate = f.alternate();
+
         for y in 0..self.height {
             for x in 0..self.width {
                 let ch = self.chars[y * self.width + x];
-                let mut string = String::from(ch.ch).truecolor(ch.fg.red, ch.fg.green, ch.fg.blue);
+                if alternate {
+                    write!(f, "{}", ch.ch)?;
+                } else {
+                    let mut string =
+                        String::from(ch.ch).truecolor(ch.fg.red, ch.fg.green, ch.fg.blue);
 
-                if let Some(bg) = ch.bg {
-                    string = string.on_truecolor(bg.red, bg.green, bg.blue);
-                }
+                    if let Some(bg) = ch.bg {
+                        string = string.on_truecolor(bg.red, bg.green, bg.blue);
+                    }
 
-                write!(f, "{}", string)?;
+                    write!(f, "{}", string)?;
+                }
             }
             writeln!(f)?;
         }

stackline/tests/common/mod.rs

@@ -63,3 +63,23 @@ macro_rules! assert_no_signal {
         );
     }};
 }
+
+#[macro_export]
+macro_rules! assert_display_eq {
+    ( $world:expr, $path:expr ) => {{
+        use std::fmt::Write;
+
+        let actual = format!("{:#}", $world);
+        let path = $path;
+        let expected = std::fs::read_to_string(&path).unwrap_or_else(|err| {
+            panic!("Couldn't read {}: {}", path, err);
+        });
+
+        let mut actual_trimmed = String::new();
+        for line in actual.lines() {
+            write!(&mut actual_trimmed, "{}\n", line.trim_end()).unwrap();
+        }
+
+        assert_eq!(actual_trimmed.trim_end(), expected.trim_end());
+    }};
+}

stackline/tests/transmit.rs

@@ -0,0 +1,10 @@
+#[allow(unused_imports)]
+use stackline::prelude::*;
+mod common;
+
+#[test]
+fn test_display_sender() {
+    let world = load_test!("tests/transmit/sender-dir.json");
+
+    assert_display_eq!(world, "tests/transmit/sender-dir.txt");
+}

stackline/tests/transmit/sender-dir.json

@@ -0,0 +1 @@
+{"panes":{"second":{"tiles":[{"cell":{"Sender":{"coordinates":["target",0,0],"path":[[6,6],[3,6],[3,3]],"length":6,"signals":[]}},"signal":null,"state":"Idle","updated":false}],"width":1,"height":1,"position":[6,6]},"target":{"tiles":[{"cell":{"Wire":"Any"},"signal":null,"state":"Idle","updated":false}],"width":1,"height":1,"position":[3,3]},"main":{"tiles":[{"cell":{"Sender":{"coordinates":["target",0,0],"path":[[0,0],[3,0],[3,3]],"length":6,"signals":[]}},"signal":null,"state":"Idle","updated":false}],"width":1,"height":1,"position":[0,0]}}}

stackline/tests/transmit/sender-dir.txt

@@ -0,0 +1,7 @@
+>--v
+   |
+   |
+   +
+   |
+   |
+   ^--<