tests: Add gnrc-pktbuf

tests/gnrc-pktbuf/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "riot-wrappers-test-gnrc-pktbuf"
+version = "0.1.0"
+authors = ["Christian Amsüss <[email protected]>"]
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["staticlib"]
+
+[profile.release]
+panic = "abort"
+
+[dependencies]
+riot-wrappers = { version = "*", features = [ "set_panic_handler", "panic_handler_format" ] }
+riot-sys = "*"
+
+[patch.crates-io]
+riot-sys = { git = "https://github.com/RIOT-OS/rust-riot-sys" }

tests/gnrc-pktbuf/Makefile

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+# name of your application
+APPLICATION = riot-wrappers-test-gnrc-pktbuf
+APPLICATION_RUST_MODULE = riot_wrappers_test_gnrc_pktbuf
+BASELIBS += $(APPLICATION_RUST_MODULE).module
+FEATURES_REQUIRED += rust_target
+
+# FIXME: That's not a good criterion, gnrc_pktbuf can well stand alone
+USEMODULE += gnrc
+USEMODULE += gnrc_pktbuf
+
+# thus we get `gnrc_pktbuf_is_empty` and `_is_sane`
+CFLAGS += -DTEST_SUITES
+
+include $(RIOTBASE)/Makefile.include

tests/gnrc-pktbuf/src/lib.rs

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+#![no_std]
+
+use riot_wrappers::println;
+use riot_wrappers::riot_main;
+
+riot_main!(main);
+
+#[track_caller]
+fn check() {
+    assert!(
+        unsafe { riot_sys::gnrc_pktbuf_is_sane() },
+        "GNRC packet buffer in unsound state"
+    );
+}
+
+#[track_caller]
+fn check_empty() {
+    check();
+    assert!(
+        unsafe { riot_sys::gnrc_pktbuf_is_empty() },
+        "GNRC packet buffer should be empty at this point"
+    );
+}
+
+fn main() {
+    check_empty();
+
+    let snip1 = riot_wrappers::gnrc::pktbuf::Pktsnip::allocate(
+        128,
+        riot_sys::gnrc_nettype_t_GNRC_NETTYPE_UNDEF,
+    )
+    .unwrap();
+    println!("Allocated pktsnip {:?}", snip1);
+
+    check();
+
+    let snip2 = riot_wrappers::gnrc::pktbuf::Pktsnip::allocate_from(
+        &[1, 2, 3, 4],
+        riot_sys::gnrc_nettype_t_GNRC_NETTYPE_UNDEF,
+    )
+    .unwrap();
+    println!("Allocated another pktsnip {:?}", snip2);
+    let snip2 = snip2
+        .add(10, riot_sys::gnrc_nettype_t_GNRC_NETTYPE_UNDEF)
+        .unwrap();
+    println!("... and prefixed it with 10 bytes into {:?}", snip2);
+
+    check();
+
+    drop(snip1);
+    drop(snip2);
+    println!("Dropped it");
+
+    check_empty();
+
+    println!("Tests completed.");
+}

tests/gnrc-pktbuf/tests/01-run.py

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+#!/usr/bin/env python3
+
+import sys
+from testrunner import run
+
+def test(child):
+    child.expect_exact("Tests completed.")
+
+if __name__ == "__main__":
+    sys.exit(run(test))