dure 0.1.0

Detachable Windows console sessions that outlive the terminal
Documentation 
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
139

//! Facade over local console PAL implementations.

use std::fmt;
#[cfg(test)]
use std::sync::Arc;

use crate::pal::error::PalError;
#[cfg(test)]
use crate::pal::local_console::MockLocalConsole;
use crate::pal::local_console::{BuildTargetConsole, ConsoleInput, LocalConsole};
use crate::pal::pseudoconsole::WindowSize;

/// Dispatches console operations to the real PAL or a test mock.
#[derive(Clone)]
pub(crate) enum LocalConsoleFacade {
    /// Real platform implementation.
    Target(&'static BuildTargetConsole),
    /// Mock for tests.
    #[cfg(test)]
    Mock(Arc<MockLocalConsole>),
}

static TARGET: BuildTargetConsole = BuildTargetConsole;

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg_attr(test, mutants::skip)]
impl fmt::Debug for LocalConsoleFacade {
    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 LocalConsoleFacade {
    pub(crate) const fn target() -> Self {
        Self::Target(&TARGET)
    }

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

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg_attr(test, mutants::skip)]
impl LocalConsole for LocalConsoleFacade {
    fn has_console(&self) -> bool {
        match self {
            Self::Target(inner) => inner.has_console(),
            #[cfg(test)]
            Self::Mock(inner) => inner.has_console(),
        }
    }

    fn stdin_is_terminal(&self) -> bool {
        match self {
            Self::Target(inner) => inner.stdin_is_terminal(),
            #[cfg(test)]
            Self::Mock(inner) => inner.stdin_is_terminal(),
        }
    }

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

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

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

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

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

    fn write_output(&self, data: &[u8]) -> Result<(), PalError> {
        match self {
            Self::Target(inner) => inner.write_output(data),
            #[cfg(test)]
            Self::Mock(inner) => inner.write_output(data),
        }
    }

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

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

    #[test]
    fn from_mock_dispatches_has_console() {
        let mut mock = MockLocalConsole::new();
        mock.expect_has_console().return_const(true);
        let facade = LocalConsoleFacade::from_mock(mock);
        assert!(facade.has_console());
        _ = format!("{facade:?}");
    }
}