use defmt-test in the test suite

testsuite/tests/test.rs

@@ -4,9 +4,16 @@
 use cortex_m_rt::entry;
 use {{crate_name}} as _; // memory layout + panic handler
 
-#[entry]
-fn main() -> ! {
-    assert!(false, "TODO: Write actual tests");
+// See https://crates.io/crates/defmt-test/0.1.0 for more documentation
+#[defmt_test::tests]
+mod tests {
+    #[test]
+    fn assert_true() {
+        assert!(true)
+    }
 
-    {{crate_name}}::exit();
+    #[test]
+    fn assert_false() {
+        assert!(false, "TODO: write actual tests")
+    }
 }