dure 0.2.3

Detachable Windows console sessions that outlive the terminal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

//! Facade over session store implementations.

use std::fmt;
use std::path::{Path, PathBuf};
use std::sync::Arc;

use crate::SessionId;
use crate::pal::error::PalError;
#[cfg(test)]
use crate::pal::session_store::MockSessionStore;
use crate::pal::session_store::{FsSessionStore, SessionStore};
use crate::session_record::{ProcessIdentity, SessionRecord};

/// Dispatches session-store calls to the filesystem store or a test mock.
#[derive(Clone)]
pub(crate) enum SessionStoreFacade {
    /// Real filesystem store.
    Target(Arc<FsSessionStore>),
    /// Mock store for tests that assert call patterns.
    #[cfg(test)]
    Mock(Arc<MockSessionStore>),
}

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg_attr(test, mutants::skip)]
impl fmt::Debug for SessionStoreFacade {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Target(_) => f.debug_tuple(stringify!(Target)).finish(),
            #[cfg(test)]
            Self::Mock(_) => f.debug_tuple(stringify!(Mock)).finish(),
        }
    }
}

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg_attr(test, mutants::skip)]
impl SessionStoreFacade {
    pub(crate) fn target(root: PathBuf) -> Self {
        Self::Target(Arc::new(FsSessionStore::new(root)))
    }

    #[cfg(test)]
    pub(crate) fn from_mock(mock: MockSessionStore) -> Self {
        Self::Mock(Arc::new(mock))
    }
}

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg_attr(test, mutants::skip)]
impl SessionStore for SessionStoreFacade {
    #[cfg(test)]
    fn root(&self) -> PathBuf {
        match self {
            Self::Target(store) => store.root(),
            Self::Mock(store) => store.root(),
        }
    }

    fn allocate_id(&self, owner: &ProcessIdentity) -> Result<SessionId, PalError> {
        match self {
            Self::Target(store) => store.allocate_id(owner),
            #[cfg(test)]
            Self::Mock(store) => store.allocate_id(owner),
        }
    }

    fn publish(&self, record: &SessionRecord) -> Result<(), PalError> {
        match self {
            Self::Target(store) => store.publish(record),
            #[cfg(test)]
            Self::Mock(store) => store.publish(record),
        }
    }

    fn read(&self, id: SessionId) -> Result<Option<SessionRecord>, PalError> {
        match self {
            Self::Target(store) => store.read(id),
            #[cfg(test)]
            Self::Mock(store) => store.read(id),
        }
    }

    fn list(&self) -> Result<Vec<SessionRecord>, PalError> {
        match self {
            Self::Target(store) => store.list(),
            #[cfg(test)]
            Self::Mock(store) => store.list(),
        }
    }

    fn list_reservations(&self) -> Result<Vec<(SessionId, ProcessIdentity)>, PalError> {
        match self {
            Self::Target(store) => store.list_reservations(),
            #[cfg(test)]
            Self::Mock(store) => store.list_reservations(),
        }
    }

    fn delete_owned_by(&self, id: SessionId, owner: &ProcessIdentity) -> Result<(), PalError> {
        match self {
            Self::Target(store) => store.delete_owned_by(id, owner),
            #[cfg(test)]
            Self::Mock(store) => store.delete_owned_by(id, owner),
        }
    }

    fn canonicalize(&self, path: &Path) -> Result<PathBuf, PalError> {
        match self {
            Self::Target(store) => store.canonicalize(path),
            #[cfg(test)]
            Self::Mock(store) => store.canonicalize(path),
        }
    }

    fn current_dir(&self) -> Result<PathBuf, PalError> {
        match self {
            Self::Target(store) => store.current_dir(),
            #[cfg(test)]
            Self::Mock(store) => store.current_dir(),
        }
    }
}

#[cfg(test)]
#[cfg_attr(coverage_nightly, coverage(off))]
mod tests {
    use super::*;

    #[test]
    fn from_mock_dispatches_root() {
        let mut mock = MockSessionStore::new();
        mock.expect_root().returning(|| PathBuf::from("/tmp/dure"));
        let facade = SessionStoreFacade::from_mock(mock);
        assert_eq!(facade.root(), PathBuf::from("/tmp/dure"));
        _ = format!("{facade:?}");
    }
}