diff --git a/crates/home/.github/workflows/check.yml b/crates/home/.github/workflows/check.yml new file mode 100644 index 000000000..704f241ee --- /dev/null +++ b/crates/home/.github/workflows/check.yml @@ -0,0 +1,107 @@ +on: + push: + branches: [main] + pull_request: +name: check +jobs: + fmt: + runs-on: ubuntu-latest + name: stable / fmt + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install stable + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: stable + components: rustfmt + - name: cargo fmt --check + uses: actions-rs/cargo@v1 + with: + command: fmt + args: --check + clippy: + runs-on: ubuntu-latest + name: ${{ matrix.toolchain }} / clippy + strategy: + fail-fast: false + matrix: + toolchain: [stable, beta] + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install ${{ matrix.toolchain }} + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: ${{ matrix.toolchain }} + default: true + components: clippy + - name: cargo clippy + uses: actions-rs/clippy-check@v1 + with: + token: ${{ secrets.GITHUB_TOKEN }} + doc: + runs-on: ubuntu-latest + name: nightly / doc + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install nightly + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: nightly + default: true + - name: cargo doc + uses: actions-rs/cargo@v1 + with: + command: doc + args: --no-deps --all-features + env: + RUSTDOCFLAGS: --cfg docsrs + hack: + runs-on: ubuntu-latest + name: ubuntu / stable / features + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install stable + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: stable + - name: cargo install cargo-hack + uses: taiki-e/install-action@cargo-hack + - name: cargo hack + uses: actions-rs/cargo@v1 + with: + command: hack + args: --feature-powerset check --lib --tests + msrv: + runs-on: ubuntu-latest + # we use a matrix here just because env can't be used in job names + # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability + strategy: + matrix: + msrv: [1.36.0] + name: ubuntu / ${{ matrix.msrv }} + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install ${{ matrix.toolchain }} + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: ${{ matrix.msrv }} + default: true + - name: cargo +${{ matrix.msrv }} check + uses: actions-rs/cargo@v1 + with: + command: check diff --git a/crates/home/.github/workflows/scheduled.yml b/crates/home/.github/workflows/scheduled.yml new file mode 100644 index 000000000..a5f53110b --- /dev/null +++ b/crates/home/.github/workflows/scheduled.yml @@ -0,0 +1,64 @@ +on: + push: + branches: [main] + pull_request: + schedule: + - cron: '7 7 * * *' +name: rolling +jobs: + # https://twitter.com/mycoliza/status/1571295690063753218 + nightly: + runs-on: ubuntu-latest + name: ubuntu / nightly + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install nightly + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: nightly + default: true + - name: cargo generate-lockfile + if: hashFiles('Cargo.lock') == '' + uses: actions-rs/cargo@v1 + with: + command: generate-lockfile + - name: cargo test --locked + uses: actions-rs/cargo@v1 + with: + command: test + args: --locked --all-features --all-targets + # https://twitter.com/alcuadrado/status/1571291687837732873 + update: + runs-on: ubuntu-latest + name: ubuntu / beta / updated + # There's no point running this if no Cargo.lock was checked in in the + # first place, since we'd just redo what happened in the regular test job. + # Unfortunately, hashFiles only works in if on steps, so we reepeat it. + # if: hashFiles('Cargo.lock') != '' + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install beta + if: hashFiles('Cargo.lock') != '' + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: beta + default: true + - name: cargo update + if: hashFiles('Cargo.lock') != '' + uses: actions-rs/cargo@v1 + with: + command: update + - name: cargo test + if: hashFiles('Cargo.lock') != '' + uses: actions-rs/cargo@v1 + with: + command: test + args: --locked --all-features --all-targets + env: + RUSTFLAGS: -D deprecated diff --git a/crates/home/.github/workflows/test.yml b/crates/home/.github/workflows/test.yml new file mode 100644 index 000000000..af346295a --- /dev/null +++ b/crates/home/.github/workflows/test.yml @@ -0,0 +1,87 @@ +on: + push: + branches: [main] + pull_request: +name: test +jobs: + required: + runs-on: ubuntu-latest + name: ubuntu / ${{ matrix.toolchain }} + strategy: + matrix: + toolchain: [stable, beta] + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install ${{ matrix.toolchain }} + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: ${{ matrix.toolchain }} + default: true + - name: cargo generate-lockfile + if: hashFiles('Cargo.lock') == '' + uses: actions-rs/cargo@v1 + with: + command: generate-lockfile + # https://twitter.com/jonhoo/status/1571290371124260865 + - name: cargo test --locked + uses: actions-rs/cargo@v1 + with: + command: test + args: --locked --all-features --all-targets + minimal: + runs-on: ubuntu-latest + name: ubuntu / stable / minimal-versions + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install stable + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: stable + - name: Install nightly for -Zminimal-versions + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: nightly + - name: cargo update -Zminimal-versions + uses: actions-rs/cargo@v1 + with: + command: update + toolchain: nightly + args: -Zminimal-versions + - name: cargo test + uses: actions-rs/cargo@v1 + with: + command: test + args: --locked --all-features --all-targets + os-check: + runs-on: ${{ matrix.os }} + name: ${{ matrix.os }} / stable + strategy: + fail-fast: false + matrix: + os: [macos-latest, windows-latest] + steps: + - uses: actions/checkout@v3 + with: + submodules: true + - name: Install stable + uses: actions-rs/toolchain@v1 + with: + profile: minimal + toolchain: stable + - name: cargo generate-lockfile + if: hashFiles('Cargo.lock') == '' + uses: actions-rs/cargo@v1 + with: + command: generate-lockfile + - name: cargo test + uses: actions-rs/cargo@v1 + with: + command: test + args: --locked --all-features --all-targets diff --git a/crates/home/.gitignore b/crates/home/.gitignore new file mode 100644 index 000000000..2c96eb1b6 --- /dev/null +++ b/crates/home/.gitignore @@ -0,0 +1,2 @@ +target/ +Cargo.lock diff --git a/crates/home/.rustfmt.toml b/crates/home/.rustfmt.toml new file mode 100644 index 000000000..17120d6f6 --- /dev/null +++ b/crates/home/.rustfmt.toml @@ -0,0 +1,4 @@ +max_width = 120 +edition = "2018" +merge_derives = false +use_field_init_shorthand = true diff --git a/crates/home/CHANGELOG.md b/crates/home/CHANGELOG.md new file mode 100644 index 000000000..7674667c9 --- /dev/null +++ b/crates/home/CHANGELOG.md @@ -0,0 +1,46 @@ +# Changelog +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + + + +## [0.5.4] - 2022-10-10 +- Add `_with_env` variants of functions to support in-process threaded tests for + rustup. + +## [0.5.3] - 2020-01-07 + +Use Rust 1.36.0 as minimum Rust version. + +## [0.5.2] - 2020-01-05 + +*YANKED since it cannot be built on Rust 1.36.0* + +### Changed +- Check for emptiness of `CARGO_HOME` and `RUSTUP_HOME` environment variables. +- Windows: Use `SHGetFolderPath` to replace `GetUserProfileDirectory` syscall. + * Remove `scopeguard` dependency. + +## [0.5.1] - 2019-10-12 +### Changed +- Disable unnecessary features for `scopeguard`. Thanks @mati865. + +## [0.5.0] - 2019-08-21 +### Added +- Add `home_dir` implementation for Windows UWP platforms. + +### Fixed +- Fix `rustup_home` implementation when `RUSTUP_HOME` is an absolute directory. +- Fix `cargo_home` implementation when `CARGO_HOME` is an absolute directory. + +### Removed +- Remove support for `multirust` folder used in old version of `rustup`. + +[Unreleased]: https://github.com/brson/home/compare/v0.5.4...HEAD +[0.5.4]: https://github.com/brson/home/compare/v0.5.3...v0.5.4 +[0.5.3]: https://github.com/brson/home/compare/v0.5.2...v0.5.3 +[0.5.2]: https://github.com/brson/home/compare/v0.5.1...v0.5.2 +[0.5.1]: https://github.com/brson/home/compare/v0.5.0...v0.5.1 +[0.5.0]: https://github.com/brson/home/compare/0.4.2...v0.5.0 diff --git a/crates/home/Cargo.toml b/crates/home/Cargo.toml new file mode 100644 index 000000000..052b61932 --- /dev/null +++ b/crates/home/Cargo.toml @@ -0,0 +1,25 @@ +[package] +name = "home" +version = "0.5.4" # also update `html_root_url` in `src/lib.rs` +authors = [ "Brian Anderson " ] +documentation = "https://docs.rs/home" +edition = "2018" +include = [ + "/src", + "/Cargo.toml", + "/CHANGELOG", + "/LICENSE-*", + "/README.md", +] +license = "MIT OR Apache-2.0" +readme = "README.md" +repository = "https://github.com/brson/home" +description = "Shared definitions of home directories" + +[target."cfg(windows)".dependencies.winapi] +version = "0.3" +features = [ + "shlobj", + "std", + "winerror", +] diff --git a/crates/home/LICENSE-APACHE b/crates/home/LICENSE-APACHE new file mode 100644 index 000000000..c31645556 --- /dev/null +++ b/crates/home/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2019 Brian Anderson + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/crates/home/LICENSE-MIT b/crates/home/LICENSE-MIT new file mode 100644 index 000000000..f613bcb1f --- /dev/null +++ b/crates/home/LICENSE-MIT @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2019 Brian Anderson + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/crates/home/README.md b/crates/home/README.md new file mode 100644 index 000000000..db2ba9259 --- /dev/null +++ b/crates/home/README.md @@ -0,0 +1,27 @@ +[![Documentation](https://docs.rs/home/badge.svg)](https://docs.rs/home) +[![Crates.io](https://img.shields.io/crates/v/home.svg)](https://crates.io/crates/home) + +Canonical definitions of `home_dir`, `cargo_home`, and `rustup_home`. + +This provides the definition of `home_dir` used by Cargo and rustup, +as well functions to find the correct value of `CARGO_HOME` and +`RUSTUP_HOME`. + +The definition of `home_dir` provided by the standard library is +incorrect because it considers the `HOME` environment variable on +Windows. This causes surprising situations where a Rust program will +behave differently depending on whether it is run under a Unix +emulation environment like Cygwin or MinGW. Neither Cargo nor rustup +use the standard libraries definition - they use the definition here. + +This crate further provides two functions, `cargo_home` and +`rustup_home`, which are the canonical way to determine the location +that Cargo and rustup store their data. + +See [rust-lang/rust#43321]. + +[rust-lang/rust#43321]: https://github.com/rust-lang/rust/issues/43321 + +## License + +MIT OR Apache-2.0 diff --git a/crates/home/src/env.rs b/crates/home/src/env.rs new file mode 100644 index 000000000..e47273bc8 --- /dev/null +++ b/crates/home/src/env.rs @@ -0,0 +1,106 @@ +//! Lower-level utilities for mocking the process environment. + +use std::{ + ffi::OsString, + io, + path::{Path, PathBuf}, +}; + +/// Permits parameterizing the home functions via the _from variants - used for +/// in-process unit testing by rustup. +pub trait Env { + /// Return the path to the the users home dir, or None if any error occurs: + /// see home_inner. + fn home_dir(&self) -> Option; + /// Return the current working directory. + fn current_dir(&self) -> io::Result; + /// Get an environment variable, as per std::env::var_os. + fn var_os(&self, key: &str) -> Option; +} + +/// Implements Env for the OS context, both Unix style and Windows. +/// +/// This is trait permits in-process testing by providing a control point to +/// allow in-process divergence on what is normally process wide state. +/// +/// Implementations should be provided by whatever testing framework the caller +/// is using. Code that is not performing in-process threaded testing requiring +/// isolated rustup/cargo directories does not need this trait or the _from +/// functions. +pub struct OsEnv; +impl Env for OsEnv { + fn home_dir(&self) -> Option { + crate::home_dir_inner() + } + fn current_dir(&self) -> io::Result { + std::env::current_dir() + } + fn var_os(&self, key: &str) -> Option { + std::env::var_os(key) + } +} + +pub const OS_ENV: OsEnv = OsEnv {}; + +/// Returns the path of the current user's home directory from [`Env::home_dir`]. +pub fn home_dir_with_env(env: &dyn Env) -> Option { + env.home_dir() +} + +/// Variant of cargo_home where the environment source is parameterized. This is +/// specifically to support in-process testing scenarios as environment +/// variables and user home metadata are normally process global state. See the +/// [`Env`] trait. +pub fn cargo_home_with_env(env: &dyn Env) -> io::Result { + let cwd = env.current_dir()?; + cargo_home_with_cwd_env(env, &cwd) +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn cargo_home_with_cwd_env(env: &dyn Env, cwd: &Path) -> io::Result { + match env.var_os("CARGO_HOME").filter(|h| !h.is_empty()) { + Some(home) => { + let home = PathBuf::from(home); + if home.is_absolute() { + Ok(home) + } else { + Ok(cwd.join(&home)) + } + } + _ => home_dir_with_env(env) + .map(|p| p.join(".cargo")) + .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "could not find cargo home dir")), + } +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn rustup_home_with_env(env: &dyn Env) -> io::Result { + let cwd = env.current_dir()?; + rustup_home_with_cwd_env(env, &cwd) +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn rustup_home_with_cwd_env(env: &dyn Env, cwd: &Path) -> io::Result { + match env.var_os("RUSTUP_HOME").filter(|h| !h.is_empty()) { + Some(home) => { + let home = PathBuf::from(home); + if home.is_absolute() { + Ok(home) + } else { + Ok(cwd.join(&home)) + } + } + _ => home_dir_with_env(env) + .map(|d| d.join(".rustup")) + .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "could not find rustup home dir")), + } +} diff --git a/crates/home/src/lib.rs b/crates/home/src/lib.rs new file mode 100644 index 000000000..ad254ca3b --- /dev/null +++ b/crates/home/src/lib.rs @@ -0,0 +1,149 @@ +//! Canonical definitions of `home_dir`, `cargo_home`, and `rustup_home`. +//! +//! This provides the definition of `home_dir` used by Cargo and +//! rustup, as well functions to find the correct value of +//! `CARGO_HOME` and `RUSTUP_HOME`. +//! +//! See also the [`dirs`](https://docs.rs/dirs) crate. +//! +//! _Note that as of 2019/08/06 it appears that cargo uses this crate. And +//! rustup has used this crate since 2019/08/21._ +//! +//! The definition of `home_dir` provided by the standard library is +//! incorrect because it considers the `HOME` environment variable on +//! Windows. This causes surprising situations where a Rust program +//! will behave differently depending on whether it is run under a +//! Unix emulation environment like Cygwin or MinGW. Neither Cargo nor +//! rustup use the standard libraries definition - they use the +//! definition here. +//! +//! This crate further provides two functions, `cargo_home` and +//! `rustup_home`, which are the canonical way to determine the +//! location that Cargo and rustup store their data. +//! +//! See also this [discussion]. +//! +//! [discussion]: https://github.com/rust-lang/rust/pull/46799#issuecomment-361156935 + +#![doc(html_root_url = "https://docs.rs/home/0.5.4")] +#![deny(rust_2018_idioms)] + +pub mod env; + +#[cfg(windows)] +mod windows; + +use std::io; +use std::path::{Path, PathBuf}; + +/// Returns the path of the current user's home directory if known. +/// +/// # Unix +/// +/// Returns the value of the `HOME` environment variable if it is set +/// and not equal to the empty string. Otherwise, it tries to determine the +/// home directory by invoking the `getpwuid_r` function on the UID of the +/// current user. +/// +/// # Windows +/// +/// Returns the value of the `USERPROFILE` environment variable if it +/// is set and not equal to the empty string. If both do not exist, +/// [`SHGetFolderPathW`][msdn] is used to return the appropriate path. +/// +/// [msdn]: https://docs.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shgetfolderpathw +/// +/// # Examples +/// +/// ``` +/// match home::home_dir() { +/// Some(path) => println!("{}", path.display()), +/// None => println!("Impossible to get your home dir!"), +/// } +/// ``` +pub fn home_dir() -> Option { + env::home_dir_with_env(&env::OS_ENV) +} + +#[cfg(windows)] +use windows::home_dir_inner; + +#[cfg(any(unix, target_os = "redox"))] +fn home_dir_inner() -> Option { + #[allow(deprecated)] + std::env::home_dir() +} + +/// Returns the storage directory used by Cargo, often knowns as +/// `.cargo` or `CARGO_HOME`. +/// +/// It returns one of the following values, in this order of +/// preference: +/// +/// - The value of the `CARGO_HOME` environment variable, if it is +/// an absolute path. +/// - The value of the current working directory joined with the value +/// of the `CARGO_HOME` environment variable, if `CARGO_HOME` is a +/// relative directory. +/// - The `.cargo` directory in the user's home directory, as reported +/// by the `home_dir` function. +/// +/// # Errors +/// +/// This function fails if it fails to retrieve the current directory, +/// or if the home directory cannot be determined. +/// +/// # Examples +/// +/// ``` +/// match home::cargo_home() { +/// Ok(path) => println!("{}", path.display()), +/// Err(err) => eprintln!("Cannot get your cargo home dir: {:?}", err), +/// } +/// ``` +pub fn cargo_home() -> io::Result { + env::cargo_home_with_env(&env::OS_ENV) +} + +/// Returns the storage directory used by Cargo within `cwd`. +/// For more details, see [`cargo_home`](fn.cargo_home.html). +pub fn cargo_home_with_cwd(cwd: &Path) -> io::Result { + env::cargo_home_with_cwd_env(&env::OS_ENV, cwd) +} + +/// Returns the storage directory used by rustup, often knowns as +/// `.rustup` or `RUSTUP_HOME`. +/// +/// It returns one of the following values, in this order of +/// preference: +/// +/// - The value of the `RUSTUP_HOME` environment variable, if it is +/// an absolute path. +/// - The value of the current working directory joined with the value +/// of the `RUSTUP_HOME` environment variable, if `RUSTUP_HOME` is a +/// relative directory. +/// - The `.rustup` directory in the user's home directory, as reported +/// by the `home_dir` function. +/// +/// # Errors +/// +/// This function fails if it fails to retrieve the current directory, +/// or if the home directory cannot be determined. +/// +/// # Examples +/// +/// ``` +/// match home::rustup_home() { +/// Ok(path) => println!("{}", path.display()), +/// Err(err) => eprintln!("Cannot get your rustup home dir: {:?}", err), +/// } +/// ``` +pub fn rustup_home() -> io::Result { + env::rustup_home_with_env(&env::OS_ENV) +} + +/// Returns the storage directory used by rustup within `cwd`. +/// For more details, see [`rustup_home`](fn.rustup_home.html). +pub fn rustup_home_with_cwd(cwd: &Path) -> io::Result { + env::rustup_home_with_cwd_env(&env::OS_ENV, cwd) +} diff --git a/crates/home/src/windows.rs b/crates/home/src/windows.rs new file mode 100644 index 000000000..30a535df5 --- /dev/null +++ b/crates/home/src/windows.rs @@ -0,0 +1,68 @@ +use std::env; +use std::ffi::OsString; +use std::os::windows::ffi::OsStringExt; +use std::path::PathBuf; +use std::ptr; + +use winapi::shared::minwindef::MAX_PATH; +use winapi::shared::winerror::S_OK; +use winapi::um::shlobj::{SHGetFolderPathW, CSIDL_PROFILE}; + +pub fn home_dir_inner() -> Option { + env::var_os("USERPROFILE") + .filter(|s| !s.is_empty()) + .map(PathBuf::from) + .or_else(home_dir_crt) +} + +#[cfg(not(target_vendor = "uwp"))] +fn home_dir_crt() -> Option { + unsafe { + let mut path: Vec = Vec::with_capacity(MAX_PATH); + match SHGetFolderPathW(ptr::null_mut(), CSIDL_PROFILE, ptr::null_mut(), 0, path.as_mut_ptr()) { + S_OK => { + let len = wcslen(path.as_ptr()); + path.set_len(len); + let s = OsString::from_wide(&path); + Some(PathBuf::from(s)) + } + _ => None, + } + } +} + +#[cfg(target_vendor = "uwp")] +fn home_dir_crt() -> Option { + None +} + +extern "C" { + fn wcslen(buf: *const u16) -> usize; +} + +#[cfg(not(target_vendor = "uwp"))] +#[cfg(test)] +mod tests { + use super::home_dir_inner; + use std::env; + use std::ops::Deref; + use std::path::{Path, PathBuf}; + + #[test] + fn test_with_without() { + let olduserprofile = env::var_os("USERPROFILE").unwrap(); + + env::remove_var("HOME"); + env::remove_var("USERPROFILE"); + + assert_eq!(home_dir_inner(), Some(PathBuf::from(olduserprofile))); + + let home = Path::new(r"C:\Users\foo tar baz"); + + env::set_var("HOME", home.as_os_str()); + assert_ne!(home_dir_inner().as_ref().map(Deref::deref), Some(home)); + + env::set_var("USERPROFILE", home.as_os_str()); + assert_eq!(home_dir_inner().as_ref().map(Deref::deref), Some(home)); + } +}