bevy_assert 0.1.4

Bevy assertion tools
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

use std::collections::HashSet;

use bevy::prelude::*;
use bevy_assert::AppTest;

#[test]
fn test_query_count_one() {
    let mut t = AppTest::new();
    let start = t.count_all();
    t.world_mut().spawn(());
    let end = t.count_all();
    assert_eq!(end - start, 1);
}

#[test]
fn test_query_count_one_filtered() {
    let mut t = AppTest::new();
    let start = t.count::<With<Transform>>();
    t.world_mut().spawn(());
    t.world_mut().spawn(Transform::default());
    let end = t.count::<With<Transform>>();
    assert_eq!(end - start, 1);
}

#[test]
fn test_all_entities() {
    let mut t = AppTest::new();
    let mut added = t.all_entities();
    added.insert(t.world_mut().spawn(()).id());
    added.insert(t.world_mut().spawn(Transform::default()).id());
    let total = t.all_entities();
    assert_eq!(added, total);
}

#[test]
fn test_entities_filtered() {
    let mut t = AppTest::new();
    let mut added = HashSet::<Entity>::new();
    t.world_mut().spawn(());
    added.insert(t.world_mut().spawn(Transform::default()).id());
    let total = t.entities::<With<Transform>>();
    assert_eq!(added, total);
}