1 files changed, 70 insertions, 0 deletions
diff --git a/testsuite/minitest/src/lib.rs b/testsuite/minitest/src/lib.rs
new file mode 100644
index 0000000..d98fb64
--- /dev/null
+++ b/testsuite/minitest/src/lib.rs
@@ -0,0 +1,70 @@
+#![no_std]
+
+use core::fmt::Debug;
+pub use minitest_macros::tests;
+
+/// Private implementation details used by the proc macro.
+#[doc(hidden)]
+pub mod export;
+
+mod sealed {
+    pub trait Sealed {}
+    impl Sealed for () {}
+    impl<T, E> Sealed for Result<T, E> {}
+}
+
+/// Indicates whether a test succeeded or failed.
+///
+/// This is comparable to the `Termination` trait in libstd, except stable and tailored towards the
+/// needs of defmt-test. It is implemented for `()`, which always indicates success, and `Result`,
+/// where `Ok` indicates success.
+pub trait TestOutcome: Debug + sealed::Sealed {
+    fn is_success(&self) -> bool;
+}
+
+impl TestOutcome for () {
+    fn is_success(&self) -> bool {
+        true
+    }
+}
+
+impl<T: Debug, E: Debug> TestOutcome for Result<T, E> {
+    fn is_success(&self) -> bool {
+        self.is_ok()
+    }
+}
+
+#[macro_export]
+macro_rules! log {
+    ($s:literal $(, $x:expr)* $(,)?)  => {
+        {
+            #[cfg(feature = "semihosting")]
+            ::cortex_m_semihosting::hprintln!($s $(, $x)*);
+            #[cfg(feature = "rtt")]
+            ::rtt_target::rprintln!($s $(, $x)*);
+            #[cfg(not(any(feature = "semihosting", feature="rtt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+/// Stop all tests without failure.
+pub fn exit() -> ! {
+    #[cfg(feature = "rtt")]
+    cortex_m::asm::bkpt();
+    #[cfg(feature = "semihosting")]
+    cortex_m_semihosting::debug::exit(cortex_m_semihosting::debug::EXIT_SUCCESS);
+
+    unreachable!()
+}
+
+/// Stop all tests and report a failure.
+pub fn fail() -> ! {
+    #[cfg(feature = "rtt")]
+    cortex_m::asm::udf();
+    #[cfg(feature = "semihosting")]
+    cortex_m_semihosting::debug::exit(cortex_m_semihosting::debug::EXIT_FAILURE);
+
+    #[cfg(not(feature = "rtt"))]
+    unreachable!()
+}