From 386522208e62769bfc22ce1038b49d6920d26010 Mon Sep 17 00:00:00 2001
From: clizia <xanthippe@cock.lu>
Date: Sun, 31 Aug 2025 20:22:13 +0200
Subject: [PATCH] unit testing for vga

---
 src/vga_buffer.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/vga_buffer.rs b/src/vga_buffer.rs
index b99723d..3d7dcff 100644
--- a/src/vga_buffer.rs
+++ b/src/vga_buffer.rs
@@ -155,3 +155,28 @@ impl Writer {
     }
 }
 
+#[test_case]
+fn test_println_simple() {
+    println!("test_println_simple output");
+}
+
+#[test_case]
+fn test_println_many() {
+    for _ in 0..200 {
+        println!("test_println_many output");
+    }
+}
+
+#[test_case]
+fn test_println_output() {
+    let s = "loss and gain is the same";
+    println!("{}", s);
+
+    for (i, c) in s.chars().enumerate() {
+        let screen_char = WRITER.lock()
+            .buffer
+            .chars[BUFFER_HEIGHT - 2][i]
+            .read();
+        assert_eq!(char::from(screen_char.ascii_carachter), c);
+    }
+}