Support compiling for host, allowing unit tests.

src/main.rs

@@ -49,8 +49,8 @@
 #![feature(naked_functions)]
 #![feature(sync_unsafe_cell)]
 #![feature(variant_count)]
-#![no_std]
-#![no_main]
+#![cfg_attr(not(test), no_std)]
+#![cfg_attr(not(test), no_main)]
 
 #[macro_use]
 extern crate alloc;
@@ -147,11 +147,7 @@ mod syscall;
 /// Time
 mod time;
 
-/// Tests
-#[cfg(test)]
-mod tests;
-
-#[global_allocator]
+#[cfg_attr(not(test), global_allocator)]
 static ALLOCATOR: allocator::Allocator = allocator::Allocator;
 
 /// Get the current CPU's scheduling ID

src/tests/mod.rs

@@ -1,29 +0,0 @@
-use syscall::{self, Error};
-
-/// Test stdio
-#[test]
-fn stdio() {
-    // Test opening stdin
-    assert_eq!(syscall::open(b"debug:", 0), Ok(0));
-
-    // Test opening stdout
-    assert_eq!(syscall::open(b"debug:", 0), Ok(1));
-
-    // Test opening stderr
-    assert_eq!(syscall::open(b"debug:", 0), Ok(2));
-
-    // Test writing stdout
-    let stdout_str = b"STDOUT";
-    assert_eq!(syscall::write(1, stdout_str), Ok(stdout_str.len()));
-
-    // Test writing stderr
-    let stderr_str = b"STDERR";
-    assert_eq!(syscall::write(2, stderr_str), Ok(stderr_str.len()));
-}
-
-/// Test that invalid reads/writes cause errors
-#[test]
-fn invalid_path() {
-    assert_eq!(syscall::read(999, &mut []), Err(Error::new(syscall::EBADF)));
-    assert_eq!(syscall::write(999, &[]), Err(Error::new(syscall::EBADF)));
-}