From 223c8484f727451d15ad23ffb0133a1858b56b5c Mon Sep 17 00:00:00 2001 From: Daniel Mueller Date: Tue, 25 Aug 2020 19:04:50 -0700 Subject: Introduce support for user-provided extensions This change introduces support for discovering and executing user-provided extensions to the program. Extensions are useful for allowing users to provide additional functionality on top of the nitrocli proper. Implementation wise we stick to an approach similar to git or cargo subcommands in nature: we search the directories listed in the PATH environment variable for a file that starts with "nitrocli-", followed by the extension name. This file is then executed. It is assumed that the extension recognizes (or at least not prohibits) the following arguments: --nitrocli (providing the path to the nitrocli binary), --model (with the model passed to the main program), and --verbosity (the verbosity level). --- src/tests/extensions.rs | 65 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/tests/extensions.rs (limited to 'src/tests/extensions.rs') diff --git a/src/tests/extensions.rs b/src/tests/extensions.rs new file mode 100644 index 0000000..9e70181 --- /dev/null +++ b/src/tests/extensions.rs @@ -0,0 +1,65 @@ +// extensions.rs + +// ************************************************************************* +// * Copyright (C) 2020 Daniel Mueller (deso@posteo.net) * +// * * +// * This program is free software: you can redistribute it and/or modify * +// * it under the terms of the GNU General Public License as published by * +// * the Free Software Foundation, either version 3 of the License, or * +// * (at your option) any later version. * +// * * +// * This program is distributed in the hope that it will be useful, * +// * but WITHOUT ANY WARRANTY; without even the implied warranty of * +// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * +// * GNU General Public License for more details. * +// * * +// * You should have received a copy of the GNU General Public License * +// * along with this program. If not, see . * +// ************************************************************************* + +use std::env; +use std::fs; +use std::io; + +use super::*; + +use crate::commands::resolve_extension; +use crate::Error; + +#[test] +fn discover_extensions() -> crate::Result<()> { + let dir1 = tempfile::tempdir()?; + let dir2 = tempfile::tempdir()?; + + { + let ext1_path = dir1.path().join("nitrocli-ext1"); + let ext2_path = dir1.path().join("nitrocli-ext2"); + let ext3_path = dir2.path().join("nitrocli-super-1337-extensions111one"); + let _ext1 = fs::File::create(&ext1_path)?; + let _ext2 = fs::File::create(&ext2_path)?; + let _ext3 = fs::File::create(&ext3_path)?; + + let path = env::join_paths(&[dir1.path(), dir2.path()]).map_err(|err| err.to_string())?; + assert_eq!( + resolve_extension(&path, ffi::OsStr::new("ext1"))?, + ext1_path + ); + assert_eq!( + resolve_extension(&path, ffi::OsStr::new("ext2"))?, + ext2_path + ); + assert_eq!( + resolve_extension(&path, ffi::OsStr::new("super-1337-extensions111one"))?, + ext3_path + ); + + match resolve_extension(&ffi::OsStr::new(""), ffi::OsStr::new("ext1")) { + Err(Error::IoError(err)) if err.kind() == io::ErrorKind::NotFound => { + let expected = io::Error::new(io::ErrorKind::NotFound, "extension nitrocli-ext1 not found"); + assert_eq!(err.to_string(), expected.to_string()) + } + r => panic!("Unexpected variant found: {:?}", r), + } + } + Ok(()) +} -- cgit v1.2.1