Function test_file_churn

tests/graph_suite/graph_test.rs:1235–1283

()

#[tokio::test]
async fn test_file_churn() {
    let dir = TempDir::new().expect("failed to create temp dir");
    let project = dir.path();

    // Init a real git repo and make two commits touching the same file
    std::process::Command::new("git")
        .args(["init"])
        .current_dir(project)
        .output()
        .expect("git init failed");
    std::process::Command::new("git")
        .args(["config", "user.email", "test@test.com"])
        .current_dir(project)
        .output()
        .expect("git config email failed");
    std::process::Command::new("git")
        .args(["config", "user.name", "Test"])
        .current_dir(project)
        .output()
        .expect("git config name failed");

    fs::write(project.join("file.rs"), "fn foo() {}").expect("write failed");
    std::process::Command::new("git")
        .args(["add", "."])
        .current_dir(project)
        .output()
        .expect("git add failed");
    std::process::Command::new("git")
        .args(["commit", "-m", "first"])
        .current_dir(project)
        .output()
        .expect("git commit 1 failed");

    fs::write(project.join("file.rs"), "fn foo() {} fn bar() {}").expect("write failed");
    std::process::Command::new("git")
        .args(["add", "."])
        .current_dir(project)
        .output()
        .expect("git add 2 failed");
    std::process::Command::new("git")
        .args(["commit", "-m", "second"])
        .current_dir(project)
        .output()
        .expect("git commit 2 failed");

    let churn = file_churn(project, 90).await.expect("file_churn failed");
    let count = churn.get("file.rs").copied().unwrap_or(0);
    assert!(count >= 2, "file.rs should have churn >= 2, got {count}");
}

#[tokio::test]
async fn test_file_churn_nonexistent_dir() {