[rust] re-enable cxx-integraion tests (#3041)

src/rust/cxx-integration-test/BUILD.bazel

@@ -0,0 +1,29 @@
+load("//:build/kj_test.bzl", "kj_test")
+load("//:build/wd_rust_crate.bzl", "wd_rust_crate")
+
+wd_rust_crate(
+    name = "cxx-integration-test",
+    cxx_bridge_deps = [
+        "@capnp-cpp//src/kj",
+    ],
+    cxx_bridge_src = "lib.rs",
+    test_deps = [
+        "@crates_vendor//:nix",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//src/rust/cxx-integration",
+        "@crates_vendor//:tokio",
+        "@crates_vendor//:tracing",
+    ],
+)
+
+kj_test(
+    src = "cxx-rust-integration-test.c++",
+    deps = [
+        ":cxx-integration-test",
+        "//deps/rust:runtime",
+        "//src/rust/cxx-integration",
+        "@capnp-cpp//src/kj:kj-async",
+    ],
+)

src/rust/cxx-integration-test/cxx-rust-integration-test.c++

@@ -12,6 +12,15 @@
 
 namespace workerd::rust {
 
+KJ_TEST("init cxx_integration") {
+  // this tests initializes cxx integration for the rest of the tests
+  rust::cxx_integration::init();
+}
+
+KJ_TEST("panic results in abort") {
+  KJ_EXPECT_SIGNAL(SIGABRT, rust::cxx_integration::trigger_panic("foobar"));
+}
+
 KJ_TEST("ok Result") { KJ_EXPECT(42 == rust::test::result_ok()); }
 
 KJ_TEST("err Result") {
@@ -25,28 +34,6 @@ KJ_TEST("err Result") {
   }
 }
 
-KJ_TEST("panic without hook results in exception") {
-  try {
-    rust::cxx_integration::trigger_panic("foobar");
-    KJ_UNREACHABLE;
-  } catch (::rust::Error e) {
-    // this is expected
-    KJ_EXPECT(e.what() == "panic in cxx_integration::ffi::trigger_panic: foobar"_kj);
-  }
-}
-
-KJ_TEST("panic with panic hook installed results in exception") {
-  rust::cxx_integration::init();
-
-  try {
-    rust::cxx_integration::trigger_panic("foobar");
-    KJ_UNREACHABLE;
-  } catch (::rust::Error e) {
-    // this is expected
-    KJ_EXPECT(e.what() == "panic in cxx_integration::ffi::trigger_panic: foobar"_kj);
-  }
-}
-
 KJ_TEST("test callback") {
   rust::test::TestCallback callback = [](size_t a, size_t b) { return a + b; };
   auto result = rust::test::call_callback(callback, 40, 2);