From e1f009ee6f7a145fb6c324b08db5767ea50d0fe0 Mon Sep 17 00:00:00 2001
From: Vinzenz Schroeter <vinzenz.f.s@gmail.com>
Date: Sun, 23 Jun 2024 10:41:46 +0200
Subject: [PATCH] examples: error message on connection failure

---
 crates/servicepoint/examples/announce.rs          | 8 +++++---
 crates/servicepoint/examples/brightness_tester.rs | 3 ++-
 crates/servicepoint/examples/game_of_life.rs      | 3 ++-
 crates/servicepoint/examples/moving_line.rs       | 3 ++-
 crates/servicepoint/examples/random_brightness.rs | 3 ++-
 crates/servicepoint/examples/wiping_clear.rs      | 5 +++--
 6 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/crates/servicepoint/examples/announce.rs b/crates/servicepoint/examples/announce.rs
index b165135..fd6609e 100644
--- a/crates/servicepoint/examples/announce.rs
+++ b/crates/servicepoint/examples/announce.rs
@@ -22,9 +22,11 @@ fn main() {
         cli.text.push("Hello, CCCB!".to_string());
     }
 
-    let connection = Connection::open(&cli.destination).unwrap();
+    let connection = Connection::open(&cli.destination)
+        .expect("could not connect to display");
+
     if cli.clear {
-        connection.send(Command::Clear).unwrap();
+        connection.send(Command::Clear).expect("sending clear failed");
     }
 
     let max_width = cli.text.iter().map(|t| t.len()).max().unwrap();
@@ -41,5 +43,5 @@ fn main() {
 
     connection
         .send(Command::Cp437Data(Origin(0, 0), chars))
-        .unwrap();
+        .expect("sending text failed");
 }
diff --git a/crates/servicepoint/examples/brightness_tester.rs b/crates/servicepoint/examples/brightness_tester.rs
index b1b1ac3..798e94f 100644
--- a/crates/servicepoint/examples/brightness_tester.rs
+++ b/crates/servicepoint/examples/brightness_tester.rs
@@ -13,7 +13,8 @@ struct Cli {
 
 fn main() {
     let cli = Cli::parse();
-    let connection = Connection::open(cli.destination).unwrap();
+    let connection = Connection::open(cli.destination)
+        .expect("could not connect to display");
 
     let mut pixels = PixelGrid::max_sized();
     pixels.fill(true);
diff --git a/crates/servicepoint/examples/game_of_life.rs b/crates/servicepoint/examples/game_of_life.rs
index 9fff62e..47f1139 100644
--- a/crates/servicepoint/examples/game_of_life.rs
+++ b/crates/servicepoint/examples/game_of_life.rs
@@ -18,7 +18,8 @@ struct Cli {
 fn main() {
     let cli = Cli::parse();
 
-    let connection = Connection::open(&cli.destination).unwrap();
+    let connection = Connection::open(&cli.destination)
+        .expect("could not connect to display");
     let mut field = make_random_field(cli.probability);
 
     loop {
diff --git a/crates/servicepoint/examples/moving_line.rs b/crates/servicepoint/examples/moving_line.rs
index f0353be..d2b4455 100644
--- a/crates/servicepoint/examples/moving_line.rs
+++ b/crates/servicepoint/examples/moving_line.rs
@@ -13,7 +13,8 @@ struct Cli {
 }
 
 fn main() {
-    let connection = Connection::open(Cli::parse().destination).unwrap();
+    let connection = Connection::open(Cli::parse().destination)
+        .expect("could not connect to display");
 
     let mut pixels = PixelGrid::max_sized();
     for x_offset in 0..usize::MAX {
diff --git a/crates/servicepoint/examples/random_brightness.rs b/crates/servicepoint/examples/random_brightness.rs
index d9ea583..ad3dfae 100644
--- a/crates/servicepoint/examples/random_brightness.rs
+++ b/crates/servicepoint/examples/random_brightness.rs
@@ -22,7 +22,8 @@ struct Cli {
 fn main() {
     let cli = Cli::parse();
 
-    let connection = Connection::open(cli.destination).unwrap();
+    let connection = Connection::open(cli.destination)
+        .expect("could not connect to display");
     let wait_duration = Duration::from_millis(cli.wait_ms);
 
     // put all pixels in on state
diff --git a/crates/servicepoint/examples/wiping_clear.rs b/crates/servicepoint/examples/wiping_clear.rs
index fdf84e3..03e8215 100644
--- a/crates/servicepoint/examples/wiping_clear.rs
+++ b/crates/servicepoint/examples/wiping_clear.rs
@@ -22,7 +22,8 @@ fn main() {
         Duration::from_millis(cli.time / PIXEL_WIDTH as u64),
     );
 
-    let connection = Connection::open(cli.destination).unwrap();
+    let connection = Connection::open(cli.destination)
+        .expect("could not connect to display");
 
     let mut enabled_pixels = PixelGrid::new(PIXEL_WIDTH, PIXEL_HEIGHT);
     enabled_pixels.fill(true);
@@ -38,7 +39,7 @@ fn main() {
 
         connection
             .send(Command::BitmapLinearAnd(0, bit_vec, CompressionCode::Lzma))
-            .unwrap();
+            .expect("could not send command to display");
         thread::sleep(sleep_duration);
     }
 }