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
|
//! Example Unit Test
//!
//! > This example shows how to write unit tests for Chain and Renderer in Mingling
//!
//! ```bash
//! cargo test --manifest-path examples/example-unit-test/Cargo.toml
//! ```
use mingling::prelude::*;
#[cfg(test)]
mod tests {
use super::*;
use mingling::{assert_member_id, assert_render_result};
// --------- IMPORTANT ---------
#[test]
fn test_handle_hello() {
let hello_without_args = handle_hello(entry!()).into();
assert_render_result!(hello_without_args);
assert_member_id!(hello_without_args, ThisProgram::ErrorNoNameProvided);
let hello_with_registered_name = handle_hello(entry!("Alice")).into();
assert_render_result!(hello_with_registered_name);
assert_member_id!(
hello_with_registered_name,
ThisProgram::ErrorNameNotAvailable
);
let hello_with_long_name = handle_hello(entry!("It's a VeryLongName")).into();
assert_render_result!(hello_with_long_name);
assert_member_id!(hello_with_long_name, ThisProgram::ErrorNameTooLong);
let hello_with_valid_name = handle_hello(entry!("Peter")).into();
assert_render_result!(hello_with_valid_name);
}
#[test]
fn test_render_result_name() {
let r = render_result_name(ResultName::new("Peter".into()));
assert_eq!(r, "Hello, Peter!\n")
}
#[test]
fn test_render_error_no_name_provided() {
let r = render_error_no_name_provided(ErrorNoNameProvided::default());
assert_eq!(r, "No name provided\n")
}
#[test]
fn test_render_error_name_not_available() {
let r = render_error_name_not_available(ErrorNameNotAvailable::default());
assert_eq!(r, "Name not available\n")
}
#[test]
fn test_render_error_name_too_long() {
let r = render_error_name_too_long(ErrorNameTooLong::new(17));
assert_eq!(r, "Name too long: 17 > 10\n")
}
// --------- IMPORTANT ---------
}
dispatcher!("hello", CMDHello => EntryHello);
pack!(ErrorNoNameProvided = ());
pack!(ErrorNameTooLong = u16);
pack!(ErrorNameNotAvailable = ());
pack!(ResultName = String);
static VEC_REGISTERED_NAMES: &[&str] = &["Alice", "Bob", "Charlie", "David", "Eve"];
#[chain]
fn handle_hello(args: EntryHello) -> Next {
let Some(name) = args.inner.first().cloned() else {
return ErrorNoNameProvided::default().to_render();
};
if name.len() > 10 {
return ErrorNameTooLong::new(name.len() as u16).to_render();
}
if VEC_REGISTERED_NAMES.contains(&name.as_str()) {
return ErrorNameNotAvailable::default().to_render();
}
ResultName::new(name).to_render()
}
#[renderer]
fn render_result_name(name: ResultName) -> String {
r_println!("Hello, {}!", *name);
}
#[renderer]
fn render_error_no_name_provided(_: ErrorNoNameProvided) -> String {
r_println!("No name provided");
}
#[renderer]
fn render_error_name_not_available(_: ErrorNameNotAvailable) -> String {
r_println!("Name not available");
}
#[renderer]
fn render_error_name_too_long(len: ErrorNameTooLong) -> String {
r_println!("Name too long: {} > 10", *len);
}
#[renderer]
fn render_dispatcher_not_found(err: DispatcherNotFound) {
r_println!("Command not found: \"{}\"", err.inner.join(" "));
}
gen_program!();
fn main() {
let mut program = ThisProgram::new();
program.with_dispatcher(CMDHello);
program.exec_and_exit();
}
|
