[hermit][open-source] Add an extremely basic test script

.github/workflows/ci.yml

@@ -20,3 +20,5 @@ jobs:
       run: sudo apt-get install -y libunwind-dev
     - name: Build
       run: cargo build
+    - name: Run basic tests.
+      run: ./scripts/basic_oss_tests.sh

scripts/basic_oss_tests.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+# The full hermit testing setup is Buck-based, and is not working in the OSS release yet.
+# This extremely basic test harness is a stop-gap.
+
+set -eEuo pipefail
+
+cd "$(dirname $0)"
+cd "../"
+
+rootdir="$(pwd)"
+hermit="$rootdir/target/debug/hermit"
+hverify="$rootdir/target/debug/hermit-verify"
+
+# Hello world smoke test:
+"$hermit" run --no-rcb-time --preemption-timeout=disabled -- /bin/echo hello
+
+function hermit_verify {
+    # Github Actions VMs don't expose the perf counters we need to use RCBs:
+    "$hverify" --hermit-bin="$hermit" run --isolate-workdir \
+               --hermit-arg="--base-env=empty" --hermit-arg="--env=HERMIT_MODE=strict" \
+               --hermit-arg="--no-rcb-time" --hermit-arg="--preemption-timeout=disabled" \
+               "$1"
+}
+
+for script in $(ls "$rootdir"/tests/shell/*.sh); do
+    echo; echo "Running shell test: $script"
+    hermit_verify "$script"
+done
+
+rust_tests=(
+    rustbin_bind_connect_race
+    rustbin_clock_gettime
+    rustbin_futex_timeout
+    rustbin_futex_wait_child
+    rustbin_heap_ptrs
+    rustbin_interrogate_tty
+    rustbin_nanosleep
+    rustbin_network_hello_world
+    rustbin_poll
+    rustbin_print_clock_nanosleep_monotonic_abs_race
+    rustbin_print_clock_nanosleep_monotonic_race
+    rustbin_print_clock_nanosleep_realtime_abs_race
+    rustbin_print_nanosleep_race
+    rustbin_rdtsc
+    rustbin_sched_yield
+    rustbin_socketpair
+    rustbin_stack_ptr
+    rustbin_thread_random
+)
+# Some tests don't work without RCB-timed based preemptions.
+# rustbin_clock_total_order
+# rustbin_exit_group
+# rustbin_futex_and_print
+# rustbin_futex_wake_some
+# rustbin_mem_race
+# rustbin_pipe_basics
+# rustbin_poll_spin
+
+for test in "${rust_tests[@]}";
+do
+    echo; echo "Running rust test: $test"
+    file="$rootdir/target/debug/$test"
+    hermit_verify "$file"
+done
+