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// vim: tw=80
// Copyright (C) 2020 Axcient
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//! A bare bones plugin that only defines the minimum callbacks
// Test cases for different plugins must be run in separate processes due to the
// one-time initialized global state.
use nbdkit::*;
use std::os::raw::c_char;
use std::sync::Once;
mod common;
use common::*;
static mut PLUGIN: Option<*const Plugin> = None;
static INIT: Once = Once::new();
plugin!(MockServer{});
// One-time initialization of the plugin
pub fn initialize() {
INIT.call_once(|| {
let _m = MOCK_SERVER_MTX.lock().unwrap();
let config_help_ctx = MockServer::config_help_context();
config_help_ctx.expect()
.return_const(None);
let desc_ctx = MockServer::description_context();
desc_ctx.expect()
.return_const(None);
let longname_ctx = MockServer::longname_context();
longname_ctx.expect()
.return_const(None);
let magic_config_key_ctx = MockServer::magic_config_key_context();
magic_config_key_ctx.expect()
.return_const(Some(c"magic_config_key"));
let name_ctx = MockServer::name_context();
name_ctx.expect()
.return_const(c"Mock NBD Server");
let version_ctx = MockServer::version_context();
version_ctx.expect()
.return_const(None);
unsafe {
PLUGIN = Some(plugin_init());
}
});
}
fn with_fixture<F: FnMut(&mut Fixture)>(mut f: F) {
initialize();
let _m = MOCK_SERVER_MTX.lock().unwrap();
let mut mock = Box::<MockServer>::default();
mock.expect_get_size()
.returning(|| Ok(0x4200));
let mockp = (&mut mock) as *mut Box<MockServer>;
let open_ctx = MockServer::open_context();
open_ctx.expect()
.return_once(|_| Ok(mock));
let pluginp = unsafe { PLUGIN.unwrap()};
let plugin = unsafe {&*pluginp};
let handle = (plugin.open)(0);
let mut fixture = Fixture {
mockp,
plugin,
handle
};
f(&mut fixture);
(plugin.close)(handle);
}
#[test]
fn open_close() {
with_fixture(|fixture| {
let size = (fixture.plugin.get_size)(fixture.handle);
assert_eq!(0x4200, size);
});
}
mod pread {
use super::*;
#[test]
fn eio() {
with_fixture(|fixture| {
unsafe{ &mut *fixture.mockp }.expect_read_at()
.returning(|_, _| Err(Error::new(libc::EIO, "Mock error")));
let mut buf = vec![0u8; 512];
assert_eq!(-1, (fixture.plugin.pread)(fixture.handle,
buf.as_mut_ptr() as *mut c_char,
buf.len() as u32,
1024,
0));
ERRNO.with(|e| assert_eq!(libc::EIO, *e.borrow()));
ERRMSG.with(|e| assert_eq!("Mock error", *e.borrow()));
});
}
#[test]
fn ok() {
with_fixture(|fixture| {
unsafe{ &mut *fixture.mockp }.expect_read_at()
.withf(|buf, offset|
buf.len() == 512 &&
*offset == 1024
).returning(|buf, _offset| {
buf[0..10].copy_from_slice(b"0123456789");
Ok(())
});
let mut buf = vec![0u8; 512];
assert_eq!(0, (fixture.plugin.pread)(fixture.handle,
buf.as_mut_ptr() as *mut c_char,
buf.len() as u32,
1024,
0));
assert_eq!(&buf[0..10], b"0123456789");
});
}
}
|
