uv/crates/puffin-cli/tests/pip_sync.rs

#![cfg(all(feature = "python", feature = "pypi"))]

use std::path::Path;
use std::process::Command;

use anyhow::{Context, Result};
use assert_cmd::prelude::*;
use assert_fs::prelude::*;
use insta_cmd::_macro_support::insta;
use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};

use common::{create_venv_py312, BIN_NAME, INSTA_FILTERS};

mod common;

fn check_command(venv: &Path, command: &str, temp_dir: &Path) {
    Command::new(venv.join("bin").join("python"))
        .arg("-c")
        .arg(command)
        .current_dir(temp_dir)
        .assert()
        .success();
}

#[test]
fn missing_requirements_txt() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let requirements_txt = temp_dir.child("requirements.txt");

    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .current_dir(&temp_dir));

    requirements_txt.assert(predicates::path::missing());

    Ok(())
}

#[test]
fn missing_venv() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = temp_dir.child(".venv");

    assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir));

    venv.assert(predicates::path::missing());

    Ok(())
}

/// Install a package into a virtual environment using the default link semantics. (On macOS,
/// this using `clone` semantics.)
#[test]
fn install() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment using copy semantics.
#[test]
fn install_copy() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--link-mode")
            .arg("copy")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment using hardlink semantics.
#[test]
fn install_hardlink() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--link-mode")
            .arg("hardlink")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe", &temp_dir);

    Ok(())
}

/// Install multiple packages into a virtual environment.
#[test]
fn install_many() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3\ntomli==2.0.1")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe; import tomli", &cache_dir);

    Ok(())
}

/// Attempt to install an already-installed package into a virtual environment.
#[test]
fn noop() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment, then install the same package into a different
/// virtual environment.
#[test]
fn link() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv1 = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv1.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let venv2 = temp_dir.child(".venv2");
    Command::new(get_cargo_bin(BIN_NAME))
        .arg("venv")
        .arg(venv2.as_os_str())
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .arg("--python")
        .arg("python3.12")
        .current_dir(&temp_dir)
        .assert()
        .success();
    venv2.assert(predicates::path::is_dir());

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv2.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv2, "import markupsafe", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment, then sync the virtual environment with a
/// different requirements file.
#[test]
fn add_remove() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("tomli==2.0.1")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import tomli", &temp_dir);

    Command::new(venv.join("bin").join("python"))
        .arg("-c")
        .arg("import markupsafe")
        .current_dir(&temp_dir)
        .assert()
        .failure();

    Ok(())
}

/// Install a package into a virtual environment, then install a second package into the same
/// virtual environment.
#[test]
fn install_sequential() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("MarkupSafe==2.1.3\ntomli==2.0.1")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import markupsafe; import tomli", &cache_dir);

    Ok(())
}

/// Install a package into a virtual environment, then install a second package into the same
/// virtual environment.
#[test]
fn upgrade() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("tomli==2.0.0")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("tomli==2.0.1")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import tomli", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment from a URL.
#[test]
fn install_url() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ https://files.pythonhosted.org/packages/ff/1d/960bb4017c68674a1cb099534840f18d3def3ce44aed12b5ed8b78e0153e/Werkzeug-2.0.0-py3-none-any.whl")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment from a Git repository.
#[test]
#[cfg(feature = "git")]
fn install_git_commit() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ git+https://github.com/pallets/werkzeug.git@af160e0b6b7ddd81c22f1652c728ff5ac72d5c74")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Install a package into a virtual environment from a Git repository.
#[test]
#[cfg(feature = "git")]
fn install_git_tag() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ git+https://github.com/pallets/werkzeug.git@2.0.0")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Install two packages from the same Git repository.
#[test]
#[cfg(feature = "git")]
fn install_git_subdirectories() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("example-pkg-a @ git+https://github.com/pypa/sample-namespace-packages.git@df7530eeb8fa0cb7dbb8ecb28363e8e36bfa2f45#subdirectory=pkg_resources/pkg_a\nexample-pkg-b @ git+https://github.com/pypa/sample-namespace-packages.git@df7530eeb8fa0cb7dbb8ecb28363e8e36bfa2f45#subdirectory=pkg_resources/pkg_b")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import example_pkg", &temp_dir);

    Ok(())
}

/// Install a source distribution into a virtual environment.
#[test]
fn install_sdist() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("Werkzeug==0.9.6")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Attempt to re-install a package into a virtual environment from a URL. The second install
/// should be a no-op.
#[test]
fn install_url_then_install_url() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ https://files.pythonhosted.org/packages/ff/1d/960bb4017c68674a1cb099534840f18d3def3ce44aed12b5ed8b78e0153e/Werkzeug-2.0.0-py3-none-any.whl")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Install a package via a URL, then via a registry version. The second install _should_ remove the
/// URL-based version, but doesn't right now.
#[test]
fn install_url_then_install_version() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ https://files.pythonhosted.org/packages/ff/1d/960bb4017c68674a1cb099534840f18d3def3ce44aed12b5ed8b78e0153e/Werkzeug-2.0.0-py3-none-any.whl")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug==2.0.0")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Install a package via a registry version, then via a direct URL version. The second install
/// should remove the registry-based version.
#[test]
fn install_version_then_install_url() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug==2.0.0")?;

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("pip-sync")
        .arg("requirements.txt")
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .env("VIRTUAL_ENV", venv.as_os_str())
        .current_dir(&temp_dir)
        .assert()
        .success();

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("werkzeug @ https://files.pythonhosted.org/packages/ff/1d/960bb4017c68674a1cb099534840f18d3def3ce44aed12b5ed8b78e0153e/Werkzeug-2.0.0-py3-none-any.whl")?;

    insta::with_settings!({
        filters => vec![
            (r"(\d|\.)+(ms|s)", "[TIME]"),
        ]
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import werkzeug", &temp_dir);

    Ok(())
}

/// Test that we select the last 3.8 compatible numpy version instead of trying to compile an
/// incompatible sdist <https://github.com/astral-sh/puffin/issues/388>
#[test]
fn install_numpy_py38() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = temp_dir.child(".venv");

    Command::new(get_cargo_bin(BIN_NAME))
        .arg("venv")
        .arg(venv.as_os_str())
        .arg("--python")
        // TODO(konstin): Mock the venv in the installer test so we don't need this anymore
        .arg(which::which("python3.8").context("python3.8 must be installed")?)
        .arg("--cache-dir")
        .arg(cache_dir.path())
        .current_dir(&temp_dir)
        .assert()
        .success();
    venv.assert(predicates::path::is_dir());

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.touch()?;
    requirements_txt.write_str("numpy")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    check_command(&venv, "import numpy", &temp_dir);

    Ok(())
}

#[test]
fn warn_on_yanked_version() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    let requirements_in = temp_dir.child("requirements.txt");
    requirements_in.touch()?;
    // This version is yanked
    requirements_in.write_str("ipython==8.13.0")?;

    insta::with_settings!({
        filters => INSTA_FILTERS.to_vec()
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    Ok(())
}

/// Resolve a local wheel.
#[test]
fn install_local_wheel() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    // Download a wheel.
    let response = reqwest::blocking::get("https://files.pythonhosted.org/packages/36/42/015c23096649b908c809c69388a805a571a3bea44362fe87e33fc3afa01f/flask-3.0.0-py3-none-any.whl")?;
    let flask_wheel = temp_dir.child("flask-3.0.0-py3-none-any.whl");
    let mut flask_wheel_file = std::fs::File::create(&flask_wheel)?;
    std::io::copy(&mut response.bytes()?.as_ref(), &mut flask_wheel_file)?;

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.write_str(&format!("flask @ file://{}", flask_wheel.path().display()))?;

    // In addition to the standard filters, remove the temporary directory from the snapshot.
    let mut filters = INSTA_FILTERS.to_vec();
    filters.push((r"file://.*/", "file://[TEMP_DIR]/"));

    insta::with_settings!({
        filters => filters
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    Ok(())
}

/// Install a local source distribution.
#[test]
fn install_local_source_distribution() -> Result<()> {
    let temp_dir = assert_fs::TempDir::new()?;
    let cache_dir = assert_fs::TempDir::new()?;
    let venv = create_venv_py312(&temp_dir, &cache_dir);

    // Download a source distribution.
    let response = reqwest::blocking::get("https://files.pythonhosted.org/packages/d8/09/c1a7354d3925a3c6c8cfdebf4245bae67d633ffda1ba415add06ffc839c5/flask-3.0.0.tar.gz")?;
    let flask_wheel = temp_dir.child("flask-3.0.0.tar.gz");
    let mut flask_wheel_file = std::fs::File::create(&flask_wheel)?;
    std::io::copy(&mut response.bytes()?.as_ref(), &mut flask_wheel_file)?;

    let requirements_txt = temp_dir.child("requirements.txt");
    requirements_txt.write_str(&format!("flask @ file://{}", flask_wheel.path().display()))?;

    // In addition to the standard filters, remove the temporary directory from the snapshot.
    let mut filters = INSTA_FILTERS.to_vec();
    filters.push((r"file://.*/", "file://[TEMP_DIR]/"));

    insta::with_settings!({
        filters => filters
    }, {
        assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
            .arg("pip-sync")
            .arg("requirements.txt")
            .arg("--cache-dir")
            .arg(cache_dir.path())
            .env("VIRTUAL_ENV", venv.as_os_str())
            .current_dir(&temp_dir));
    });

    Ok(())
}