a3s-boot 0.1.3

Adapter-first modular Rust web framework for A3S inspired by Nest.js
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

#![cfg(feature = "http-client")]

use a3s_boot::{
    BootApplication, BoxFuture, HttpClientBackend, HttpClientOptions, HttpClientRequest,
    HttpClientResponse, HttpMethod, HttpModule, HttpService, Result,
};
use serde_json::{json, Value};
use std::sync::{Arc, Mutex};
use std::time::Duration;

#[tokio::test]
async fn http_module_exports_service_and_applies_default_request_options() {
    let backend =
        RecordingBackend::new(HttpClientResponse::json(&json!({ "name": "Milo" })).unwrap());
    let app = BootApplication::builder()
        .import(HttpModule::with_backend_and_options(
            "http",
            backend.clone(),
            HttpClientOptions::new()
                .with_base_url("https://api.example/v1")
                .with_header("x-api-key", "secret")
                .with_timeout(Duration::from_secs(3)),
        ))
        .build()
        .unwrap();

    let client = app.get::<HttpService>().unwrap();
    let cat: Value = client.get_json("/cats/1").await.unwrap();
    let request = backend.requests()[0].clone();

    assert_eq!(cat, json!({ "name": "Milo" }));
    assert_eq!(request.method(), HttpMethod::Get);
    assert_eq!(request.url(), "https://api.example/v1/cats/1");
    assert_eq!(request.header("x-api-key"), Some("secret"));
    assert_eq!(request.timeout(), Some(Duration::from_secs(3)));
}

#[tokio::test]
async fn http_service_json_helpers_send_and_decode_json_bodies() {
    let backend = RecordingBackend::new(
        HttpClientResponse::json_with_status(201, &json!({ "id": 7 })).unwrap(),
    );
    let client = HttpService::from_backend(backend.clone(), HttpClientOptions::default());

    let value: Value = client
        .post_json("https://api.example/cats", &json!({ "name": "Milo" }))
        .await
        .unwrap();
    let request = backend.requests()[0].clone();

    assert_eq!(value, json!({ "id": 7 }));
    assert_eq!(request.method(), HttpMethod::Post);
    assert_eq!(request.url(), "https://api.example/cats");
    assert_eq!(request.header("content-type"), Some("application/json"));
    assert_eq!(request.body(), br#"{"name":"Milo"}"#);
}

#[tokio::test]
async fn http_module_supports_named_global_exports() {
    let app = BootApplication::builder()
        .import(
            HttpModule::with_backend(
                "http",
                RecordingBackend::new(HttpClientResponse::new(204, [])),
            )
            .named("external-http")
            .global(),
        )
        .build()
        .unwrap();

    let client = app.get_named::<HttpService>("external-http").unwrap();

    assert_eq!(
        client
            .get("https://api.example/ping")
            .await
            .unwrap()
            .status(),
        204
    );
}

#[tokio::test]
async fn http_module_async_options_builds_service_during_async_graph_build() {
    let app = BootApplication::builder()
        .import(HttpModule::async_options("http", |_| async {
            Ok(HttpClientOptions::new().with_base_url("https://async.example"))
        }))
        .build_async()
        .await
        .unwrap();

    let service = app.get::<HttpService>().unwrap();

    assert_eq!(service.options().base_url(), Some("https://async.example"));
}

#[tokio::test]
async fn http_service_rejects_relative_urls_without_base_url() {
    let client = HttpService::from_backend(
        RecordingBackend::new(HttpClientResponse::new(200, [])),
        HttpClientOptions::default(),
    );

    let error = client.get("/cats").await.unwrap_err();

    assert!(error
        .to_string()
        .contains("relative HTTP client URL `/cats` requires a base URL"));
}

#[derive(Clone)]
struct RecordingBackend {
    requests: Arc<Mutex<Vec<HttpClientRequest>>>,
    response: HttpClientResponse,
}

impl RecordingBackend {
    fn new(response: HttpClientResponse) -> Self {
        Self {
            requests: Arc::new(Mutex::new(Vec::new())),
            response,
        }
    }

    fn requests(&self) -> Vec<HttpClientRequest> {
        self.requests.lock().unwrap().clone()
    }
}

impl HttpClientBackend for RecordingBackend {
    fn send(&self, request: HttpClientRequest) -> BoxFuture<'static, Result<HttpClientResponse>> {
        let requests = Arc::clone(&self.requests);
        let response = self.response.clone();
        Box::pin(async move {
            requests.lock().unwrap().push(request);
            Ok(response)
        })
    }
}