tests: use libtest-mimic and fix CI

.github/workflows/build-aya.yml

@@ -66,8 +66,12 @@ jobs:
 
       - name: Install Pre-requisites
         run: |
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+          echo "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-15 main" | sudo tee -a /etc/apt/sources.list
           sudo apt-get update
-          sudo apt-get -qy install linux-tools-common qemu-system-x86 cloud-image-utils openssh-client libelf-dev gcc-multilib
+          sudo apt-get -qy install linux-tools-common qemu-system-x86 cloud-image-utils openssh-client libelf-dev gcc-multilib llvm-15 clang-15
+          sudo update-alternatives --install /usr/bin/llvm-objcopy llvm-objcopy /usr/bin/llvm-objcopy-15 200
+          sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-15 200
           cargo install bpf-linker
 
       - name: Lint integration tests

test/integration-test/Cargo.toml

@@ -19,3 +19,4 @@ object = { version = "0.30", default-features = false, features = ["std", "read_
 rbpf = "0.1.0"
 regex = "1"
 tempfile = "3.3.0"
+libtest-mimic = "0.6.0"

test/integration-test/src/main.rs

@@ -1,74 +1,21 @@
-use log::info;
+use libtest_mimic::{Arguments, Trial};
 
 mod tests;
 use tests::IntegrationTest;
 
-use clap::Parser;
-
-#[derive(Debug, Parser)]
-#[clap(author, version, about, long_about = None)]
-#[clap(propagate_version = true)]
-pub struct RunOptions {
-    #[clap(short, long, value_parser)]
-    tests: Option<Vec<String>>,
-}
-
-#[derive(Debug, Parser)]
-struct Cli {
-    #[clap(subcommand)]
-    command: Option<Command>,
-}
-
-#[derive(Debug, Parser)]
-enum Command {
-    /// Run one or more tests: ... -- run -t test1 -t test2
-    Run(RunOptions),
-    /// List all the tests: ... -- list
-    List,
-}
-
-macro_rules! exec_test {
-    ($test:expr) => {{
-        info!("Running {}", $test.name);
-        ($test.test_fn)();
-    }};
-}
-
-macro_rules! exec_all_tests {
-    () => {{
-        for t in inventory::iter::<IntegrationTest> {
-            exec_test!(t)
-        }
-    }};
-}
-
-fn main() -> anyhow::Result<()> {
+fn main() {
     env_logger::init();
-
-    let cli = Cli::parse();
-
-    match &cli.command {
-        Some(Command::Run(opts)) => match &opts.tests {
-            Some(tests) => {
-                for t in inventory::iter::<IntegrationTest> {
-                    if tests.contains(&t.name.into()) {
-                        exec_test!(t)
-                    }
-                }
-            }
-            None => {
-                exec_all_tests!()
-            }
-        },
-        Some(Command::List) => {
-            for t in inventory::iter::<IntegrationTest> {
-                info!("{}", t.name);
-            }
-        }
-        None => {
-            exec_all_tests!()
-        }
-    }
-
-    Ok(())
+    let mut args = Arguments::from_args();
+    // Force to run single-threaded
+    args.test_threads = Some(1);
+    let tests = inventory::iter::<IntegrationTest>
+        .into_iter()
+        .map(|test| {
+            Trial::test(test.name, move || {
+                (test.test_fn)();
+                Ok(())
+            })
+        })
+        .collect();
+    libtest_mimic::run(&args, tests).exit();
 }

test/integration-test/src/tests/relocations.rs

@@ -145,7 +145,7 @@ impl RelocationTest {
 
     /// - Generate the target BTF source with a mock main()
     /// - Compile it with clang
-    /// - Extract the BTF with pahole
+    /// - Extract the BTF with llvm-objcopy
     fn build_btf(&self) -> Result<Btf> {
         let target_btf = self.target_btf;
         let relocation_code = self.relocation_code;
@@ -171,12 +171,12 @@ impl RelocationTest {
             "#
         ))
         .context("Failed to compile BTF")?;
-        Command::new("pahole")
+        Command::new("llvm-objcopy")
             .current_dir(tmp_dir.path())
-            .arg("--btf_encode_detached=target.btf")
+            .args(["--dump-section", ".BTF=target.btf"])
             .arg(compiled_file)
             .status()
-            .context("Failed to run pahole")?
+            .context("Failed to run llvm-objcopy")?
             .success()
             .then_some(())
             .context("Failed to extract BTF")?;

test/run.sh

@@ -185,4 +185,10 @@ trap stop_vm EXIT
 
 cargo xtask build-integration-test --musl --libbpf-dir "$1"
 scp_vm ../target/x86_64-unknown-linux-musl/debug/integration-test
-exec_vm sudo ./integration-test
+exec_vm sudo ./integration-test --skip relocations
+
+# Relocation tests build the eBPF programs and require libbpf. We run them outside VM.
+export LIBBPF_INCLUDE="${AYA_TMPDIR}/libbpf/"
+mkdir -p "$LIBBPF_INCLUDE"
+(cd "$1/src" && make INCLUDEDIR="$LIBBPF_INCLUDE" install_headers)
+sudo -E ../target/x86_64-unknown-linux-musl/debug/integration-test relocations