browser_tester 2.0.0

Public browser_tester harness
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

use browser_tester::Harness;

#[test]
fn builder_creates_empty_session_without_html() -> browser_tester::Result<()> {
    let harness = Harness::builder().build()?;
    assert_eq!(harness.debug().url(), "https://app.local/");
    assert_eq!(harness.debug().source_html(), None);
    assert_eq!(harness.debug().dom_node_count(), 1);
    Ok(())
}

#[test]
fn builder_keeps_url_html_and_local_storage_configuration() -> browser_tester::Result<()> {
    let mut harness = Harness::builder()
        .url("https://example.test/app")
        .html("<main id='app'></main>")
        .local_storage([("token", "abc"), ("theme", "light")])
        .build()?;

    assert_eq!(harness.debug().url(), "https://example.test/app");
    assert_eq!(
        harness.debug().source_html(),
        Some("<main id='app'></main>")
    );
    assert_eq!(
        harness
            .debug()
            .local_storage()
            .get("token")
            .map(String::as_str),
        Some("abc")
    );
    assert_eq!(harness.debug().dom_node_count(), 2);

    harness.advance_time(25)?;
    assert_eq!(harness.now_ms(), 25);

    harness
        .mocks_mut()
        .fetch()
        .respond_text("https://app.local/api/message", 200, "ok");
    assert_eq!(harness.mocks_mut().fetch().responses().len(), 1);
    Ok(())
}

#[test]
fn from_html_uses_default_url_and_records_source_html() -> browser_tester::Result<()> {
    let harness = Harness::from_html("<main id='app'></main>")?;

    assert_eq!(harness.debug().url(), "https://app.local/");
    assert_eq!(
        harness.debug().source_html(),
        Some("<main id='app'></main>")
    );
    assert_eq!(harness.debug().dom_node_count(), 2);
    Ok(())
}

#[test]
fn advance_time_rejects_negative_deltas() {
    let mut harness = Harness::builder().build().expect("builder should succeed");

    let error = harness
        .advance_time(-1)
        .expect_err("negative time deltas should fail");

    assert_eq!(
        error.to_string(),
        "Timer error: advance_time requires a non-negative delta"
    );
    assert_eq!(harness.now_ms(), 0);
}

#[test]
fn storage_seed_registry_is_available_through_the_mock_view() {
    let mut harness = Harness::builder().build().expect("builder should succeed");

    {
        let mut mocks = harness.mocks_mut();
        mocks
            .downloads()
            .capture("report.csv", b"downloaded bytes".to_vec());
        let storage = mocks.storage();
        storage.seed_local("token", "abc");
        storage.seed_session("session-token", "xyz");

        assert_eq!(
            storage.local().get("token").map(String::as_str),
            Some("abc")
        );
        assert_eq!(
            storage.session().get("session-token").map(String::as_str),
            Some("xyz")
        );
    }

    harness.mocks_mut().reset_all();
    assert!(harness.mocks_mut().storage().local().is_empty());
    assert!(harness.mocks_mut().storage().session().is_empty());
    assert!(harness.mocks_mut().downloads().artifacts().is_empty());
}

#[test]
fn builder_print_failure_seed_does_not_leak_into_local_storage() -> browser_tester::Result<()>
{
    let mut harness = Harness::builder().print_failure("print blocked").build()?;

    assert!(harness.debug().local_storage().is_empty());
    assert_eq!(harness.mocks_mut().print().calls().len(), 0);
    Ok(())
}

#[test]
fn builder_scroll_failure_seed_does_not_leak_into_local_storage() -> browser_tester::Result<()>
{
    let mut harness = Harness::builder()
        .scroll_failure("scroll blocked")
        .build()?;

    assert!(harness.debug().local_storage().is_empty());
    assert_eq!(harness.mocks_mut().scroll().calls().len(), 0);
    Ok(())
}

#[test]
fn builder_close_failure_seed_does_not_leak_into_local_storage() -> browser_tester::Result<()>
{
    let mut harness = Harness::builder().close_failure("window closed").build()?;

    assert!(harness.debug().local_storage().is_empty());
    assert_eq!(harness.mocks_mut().close().calls().len(), 0);
    Ok(())
}

#[test]
fn builder_open_failure_seed_does_not_leak_into_local_storage() -> browser_tester::Result<()> {
    let mut harness = Harness::builder().open_failure("popup blocked").build()?;

    assert!(harness.debug().local_storage().is_empty());
    assert_eq!(harness.mocks_mut().open().calls().len(), 0);
    Ok(())
}