added tests

1 files changed, 22 insertions, 0 deletions

diff --git a/StrixKernel/src/vga_buffer.rs b/StrixKernel/src/vga_buffer.rs
index e2e388a..0f3e22f 100644
--- a/StrixKernel/src/vga_buffer.rs
+++ b/StrixKernel/src/vga_buffer.rs
@@ -168,4 +168,26 @@ macro_rules! println {
 pub fn _print(args: fmt::Arguments) {
     use core::fmt::Write;
     WRITER.lock().write_fmt(args).unwrap();
+}
+
+#[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 = "Some test string that fits on a single line";
+    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_character), c);
+    }
 }
\ No newline at end of file