xpct 0.5.1

An extensible test assertion library
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
140
141
142
143
144
145
146
147
148
149
150
151

use std::marker::PhantomData;

use super::{
    DynTransformMatch, FormattedFailure, Match, MatchFailure, MatchOutcome, MatcherFormat,
    TransformMatch,
};

#[derive(Debug)]
pub(super) struct DynTransformMatchAdapter<M, Fmt: MatcherFormat> {
    matcher: M,
    format: Fmt,
}

impl<M, Fmt: MatcherFormat> DynTransformMatchAdapter<M, Fmt> {
    pub fn new(matcher: M, format: Fmt) -> Self {
        Self { matcher, format }
    }
}

impl<M, Fmt> DynTransformMatch for DynTransformMatchAdapter<M, Fmt>
where
    M: TransformMatch,
    Fmt: MatcherFormat<Pos = M::PosFail, Neg = M::NegFail>,
{
    type In = M::In;

    type PosOut = M::PosOut;
    type NegOut = M::NegOut;

    fn match_pos(
        self: Box<Self>,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::PosOut, FormattedFailure>> {
        match self.matcher.match_pos(actual) {
            Ok(MatchOutcome::Success(out)) => Ok(MatchOutcome::Success(out)),
            Ok(MatchOutcome::Fail(result)) => Ok(MatchOutcome::Fail(FormattedFailure::new(
                MatchFailure::Pos(result),
                self.format,
            )?)),
            Err(error) => Err(error),
        }
    }

    fn match_neg(
        self: Box<Self>,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::NegOut, FormattedFailure>> {
        match self.matcher.match_neg(actual) {
            Ok(MatchOutcome::Success(out)) => Ok(MatchOutcome::Success(out)),
            Ok(MatchOutcome::Fail(result)) => Ok(MatchOutcome::Fail(FormattedFailure::new(
                MatchFailure::Neg(result),
                self.format,
            )?)),
            Err(error) => Err(error),
        }
    }
}

#[derive(Debug)]
pub(super) struct MatchAdapter<M, Actual>
where
    M: Match<Actual>,
{
    inner: M,
    marker: PhantomData<Actual>,
}

impl<M, Actual> MatchAdapter<M, Actual>
where
    M: Match<Actual>,
{
    pub fn new(inner: M) -> Self {
        Self {
            inner,
            marker: PhantomData,
        }
    }
}

impl<M, Actual> TransformMatch for MatchAdapter<M, Actual>
where
    M: Match<Actual>,
{
    type In = Actual;

    type PosOut = Actual;
    type NegOut = Actual;

    type PosFail = M::Fail;
    type NegFail = M::Fail;

    fn match_pos(
        mut self,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::PosOut, Self::PosFail>> {
        match self.inner.matches(&actual) {
            Ok(true) => Ok(MatchOutcome::Success(actual)),
            Ok(false) => Ok(MatchOutcome::Fail(self.inner.fail(actual))),
            Err(error) => Err(error),
        }
    }

    fn match_neg(
        mut self,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::NegOut, Self::NegFail>> {
        match self.inner.matches(&actual) {
            Ok(true) => Ok(MatchOutcome::Fail(self.inner.fail(actual))),
            Ok(false) => Ok(MatchOutcome::Success(actual)),
            Err(error) => Err(error),
        }
    }
}

#[derive(Debug)]
pub(super) struct NegTransformMatchAdapter<M> {
    matcher: M,
}

impl<M> NegTransformMatchAdapter<M> {
    pub fn new(matcher: M) -> Self {
        Self { matcher }
    }
}

impl<M> TransformMatch for NegTransformMatchAdapter<M>
where
    M: TransformMatch,
{
    type In = M::In;

    type PosOut = M::NegOut;
    type NegOut = M::PosOut;

    type PosFail = M::NegFail;
    type NegFail = M::PosFail;

    fn match_pos(
        self,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::PosOut, Self::PosFail>> {
        self.matcher.match_neg(actual)
    }

    fn match_neg(
        self,
        actual: Self::In,
    ) -> crate::Result<MatchOutcome<Self::NegOut, Self::NegFail>> {
        self.matcher.match_pos(actual)
    }
}