Add cargo-build-bpf integration tests

sdk/cargo-build-bpf/tests/crates.rs

@@ -0,0 +1,70 @@
+use std::{
+    env, fs,
+    io::{self, Write},
+    process::{Command, Output},
+};
+
+fn run_cargo_build(extra_args: &[&str]) -> Output {
+    let cwd = env::current_dir().expect("Unable to get current working directory");
+    let root = cwd
+        .parent()
+        .expect("Unable to get parent directory of current working dir")
+        .parent()
+        .expect("Unable to get ../.. of current working dir");
+    let toml = cwd
+        .join("tests")
+        .join("crates")
+        .join("noop")
+        .join("Cargo.toml");
+    let toml = format!("{}", toml.display());
+    let mut args = vec!["--bpf-sdk", "../bpf", "--manifest-path", &toml];
+    for arg in extra_args {
+        args.push(arg);
+    }
+    let cargo_build_bpf = root.join("target").join("debug").join("cargo-build-bpf");
+    Command::new(cargo_build_bpf)
+        .args(&args)
+        .output()
+        .expect("Error running cargo-build-bpf")
+}
+
+#[test]
+fn test_build() {
+    let output = run_cargo_build(&[]);
+    assert!(output.status.success());
+}
+
+// This test requires rustfilt.
+// TODO: Add a check for rustfilt, and install it if not available.
+#[ignore]
+#[test]
+fn test_dump() {
+    let output = run_cargo_build(&["--dump"]);
+    if !output.status.success() {
+        eprintln!("--- stdout ---");
+        io::stderr().write_all(&output.stdout).unwrap();
+        eprintln!("--- stderr ---");
+        io::stderr().write_all(&output.stderr).unwrap();
+        eprintln!("--------------");
+    }
+    assert!(output.status.success());
+    let cwd = env::current_dir().expect("Unable to get current working directory");
+    let dump = cwd
+        .join("tests")
+        .join("crates")
+        .join("noop")
+        .join("target")
+        .join("deploy")
+        .join("noop-dump.txt");
+    assert!(dump.exists());
+}
+
+#[test]
+fn test_out_dir() {
+    let output = run_cargo_build(&["--bpf-out-dir", "tmp_out"]);
+    assert!(output.status.success());
+    let cwd = env::current_dir().expect("Unable to get current working directory");
+    let dir = cwd.join("tmp_out");
+    assert!(dir.exists());
+    fs::remove_dir_all("tmp_out").expect("Failed to remove tmp_out dir");
+}