slack-messaging 0.7.3

Support building Slack Block Kit message
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

macro_rules! pipe {
    ($val:expr => $f:path) => {{
        $f($val)
    }};
    ($val:expr => $f:path | $($g:path)|*) => {{
        pipe!($f($val) => $($g)|*)
    }};
}

/// Shorthand to build [`Text`](crate::composition_objects::Text) object with `type` set to
/// `plain_text`.
///
/// ```
/// # use slack_messaging::plain_text;
/// # use slack_messaging::composition_objects::{Text, Plain};
/// let text = plain_text!("Hello, World!");
/// let expected = Text::<Plain>::builder()
///     .text("Hello, World!")
///     .build();
///
/// assert_eq!(text, expected);
///
/// // You can use this like format! macro.
/// let greet = "Hi";
/// let name = "Tanaka";
///
/// let text = plain_text!("{greet}, {name}!");
/// let expected = Text::<Plain>::builder()
///     .text("Hi, Tanaka!")
///     .build();
///
/// assert_eq!(text, expected);
/// ```
#[macro_export]
macro_rules! plain_text {
    ($fmt:expr) => {
        $crate::composition_objects::Text::<$crate::composition_objects::Plain>::builder()
            .text(format!($fmt))
            .build()
    };
    ($fmt:expr, $($arg:tt)+) => {
        $crate::composition_objects::Text::<$crate::composition_objects::Plain>::builder()
            .text(format!($fmt, $($arg)+))
            .build()
    };
}

/// Shorthand to build [`Text`](crate::composition_objects::Text) object with `type` set to
/// `mrkdwn`.
///
/// ```
/// # use slack_messaging::mrkdwn;
/// # use slack_messaging::composition_objects::{Text, Mrkdwn};
/// let text = mrkdwn!("Hello, World!");
/// let expected = Text::<Mrkdwn>::builder()
///     .text("Hello, World!")
///     .build();
///
/// assert_eq!(text, expected);
///
/// // You can use this like format! macro.
/// let greet = "Hi";
/// let name = "Tanaka";
///
/// let text = mrkdwn!("{greet}, {name}!");
/// let expected = Text::<Mrkdwn>::builder()
///     .text("Hi, Tanaka!")
///     .build();
///
/// assert_eq!(text, expected);
/// ```
#[macro_export]
macro_rules! mrkdwn {
    ($fmt:expr) => {
        $crate::composition_objects::Text::<$crate::composition_objects::Mrkdwn>::builder()
            .text(format!($fmt))
            .build()
    };
    ($fmt:expr, $($arg:tt)+) => {
        $crate::composition_objects::Text::<$crate::composition_objects::Mrkdwn>::builder()
            .text(format!($fmt, $($arg)+))
            .build()
    };
}

#[cfg(test)]
mod tests {
    use crate::composition_objects::Text;

    #[test]
    fn pipe_chains_multiple_functions() {
        fn add_one(v: usize) -> usize {
            v + 1
        }

        fn times_two(v: usize) -> usize {
            v * 2
        }

        fn divide_five(v: usize) -> usize {
            v / 5
        }

        let v = pipe!(4 => add_one | times_two);
        assert_eq!(v, 10);

        let v = pipe!(4 => add_one | times_two | divide_five);
        assert_eq!(v, 2);
    }

    #[test]
    fn it_works_macro_plain_text_given_expression() {
        let text = plain_text!("Hello, Tanaka!");
        let expected = Text::builder().text("Hello, Tanaka!").build();
        assert_eq!(text, expected);
    }

    #[test]
    fn it_works_macro_plain_text_given_expression_and_tokens() {
        let name = "Tanaka";
        let text = plain_text!("Hello, {name}!");
        let expected = Text::builder().text("Hello, Tanaka!").build();
        assert_eq!(text, expected);
    }

    #[test]
    fn it_works_macro_mrkdwn_given_expression() {
        let text = mrkdwn!("Hello, Tanaka!");
        let expected = Text::builder().text("Hello, Tanaka!").build();
        assert_eq!(text, expected);
    }

    #[test]
    fn it_works_macro_mrkdwn_given_expression_and_tokens() {
        let name = "Tanaka";
        let text = mrkdwn!("Hello, {name}!");
        let expected = Text::builder().text("Hello, Tanaka!").build();
        assert_eq!(text, expected);
    }
}