133 lines
4 KiB
Rust
133 lines
4 KiB
Rust
use std::fs;
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use std::path::{Path, PathBuf};
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use std::process::Command;
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use std::time::{SystemTime, UNIX_EPOCH};
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fn temp_project(name: &str) -> PathBuf {
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let unique = SystemTime::now()
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.duration_since(UNIX_EPOCH)
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.unwrap()
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.as_nanos();
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let root = std::env::temp_dir().join(format!("cstat-call-trace-cli-{name}-{unique}"));
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fs::create_dir_all(root.join("src")).unwrap();
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fs::write(
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root.join("Cargo.toml"),
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"[package]\nname = \"fixture\"\nversion = \"0.1.0\"\nedition = \"2021\"\n",
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)
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.unwrap();
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fs::write(
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root.join("src/main.rs"),
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"fn main() { parse(); }\nfn parse() { leaf(); }\nfn leaf() {}\n",
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)
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.unwrap();
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root
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}
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fn run_cstat(project: &Path, extra_args: &[&str]) -> std::process::Output {
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let bin = env!("CARGO_BIN_EXE_cstat");
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let mut command = Command::new(bin);
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command.args(["--no-color", "--path"]);
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command.arg(project);
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command.args(extra_args);
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command.output().expect("invoke cstat binary")
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}
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fn assert_success(output: &std::process::Output) {
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assert!(
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output.status.success(),
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"cstat failed: status={:?}\nstderr={}\nstdout={}",
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output.status,
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String::from_utf8_lossy(&output.stderr),
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String::from_utf8_lossy(&output.stdout),
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);
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}
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#[test]
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fn call_trace_infers_cargo_run_entry() {
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let root = temp_project("default");
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let output = run_cstat(&root, &["call-trace"]);
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assert_success(&output);
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let stdout = String::from_utf8_lossy(&output.stdout);
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assert!(stdout.contains("cstat call trace"), "stdout={stdout}");
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assert!(
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stdout.contains("static possible-call expansion; not a runtime execution trace"),
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"stdout={stdout}"
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);
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assert!(
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stdout.contains("static expansion summary:"),
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"stdout={stdout}"
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);
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assert!(
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stdout.contains("cargo command: cargo run --"),
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"stdout={stdout}"
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);
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assert!(
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stdout.contains("entry: src/main.rs::main"),
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"stdout={stdout}"
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);
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assert!(stdout.contains("main"), "stdout={stdout}");
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assert!(stdout.contains("parse"), "stdout={stdout}");
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fs::remove_dir_all(root).unwrap();
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}
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#[test]
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fn call_trace_honors_explicit_entry() {
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let root = temp_project("explicit");
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let output = run_cstat(&root, &["call-trace", "--entry", "src/main.rs::parse"]);
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assert_success(&output);
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let stdout = String::from_utf8_lossy(&output.stdout);
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assert!(
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stdout.contains("entry: src/main.rs::parse"),
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"stdout={stdout}"
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);
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assert!(stdout.contains("\nparse\n"), "stdout={stdout}");
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assert!(
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!stdout.contains("cargo command: cargo run --"),
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"stdout={stdout}"
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);
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fs::remove_dir_all(root).unwrap();
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}
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#[test]
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fn call_trace_entry_dir_lists_parseable_files() {
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let root = temp_project("entry-dir");
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fs::write(root.join("src/broken.rs"), "fn broken(\n").unwrap();
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let output = run_cstat(&root, &["call-trace", "--entry", "src"]);
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assert_success(&output);
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let stdout = String::from_utf8_lossy(&output.stdout);
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assert!(
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stdout.contains("parseable files under src:"),
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"stdout={stdout}"
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);
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assert!(stdout.contains("src/main.rs"), "stdout={stdout}");
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assert!(!stdout.contains("src/broken.rs"), "stdout={stdout}");
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assert!(!stdout.contains("summary:"), "stdout={stdout}");
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fs::remove_dir_all(root).unwrap();
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}
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#[test]
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fn call_trace_entry_file_lists_entrypoints() {
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let root = temp_project("entry-file");
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let output = run_cstat(&root, &["call-trace", "--entry", "src/main.rs"]);
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assert_success(&output);
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let stdout = String::from_utf8_lossy(&output.stdout);
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assert!(
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stdout.contains("entrypoints in src/main.rs:"),
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"stdout={stdout}"
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);
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assert!(stdout.contains("src/main.rs::main"), "stdout={stdout}");
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assert!(stdout.contains("src/main.rs::parse"), "stdout={stdout}");
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assert!(stdout.contains("src/main.rs::leaf"), "stdout={stdout}");
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assert!(!stdout.contains("summary:"), "stdout={stdout}");
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fs::remove_dir_all(root).unwrap();
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}
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