cumulo_dipa/
float.rs

1use crate::CreatedDelta;
2use crate::{number_diff_impl_option_wrapped, number_patch_impl_option_wrapped};
3
4number_diff_impl_option_wrapped!(f32, f32);
5number_patch_impl_option_wrapped!(f32, Option<f32>);
6
7number_diff_impl_option_wrapped!(f64, f64);
8number_patch_impl_option_wrapped!(f64, Option<f64>);
9
10#[cfg(test)]
11mod tests {
12    use super::*;
13    use crate::dipa_impl_tester::DipaImplTester;
14    use crate::{Diffable, Patchable};
15
16    /// We wrap f32 so that we can impl Eq and PartialEq
17    #[derive(Debug, Deserialize, Serialize, Copy, Clone)]
18    struct F32TestWrapper(f32);
19    /// We wrap f64 so that we can impl Eq and PartialEq
20    #[derive(Debug, Deserialize, Serialize, Copy, Clone)]
21    struct F64TestWrapper(f64);
22
23    impl<'s, 'e> Diffable<'s, 'e, F32TestWrapper> for F32TestWrapper {
24        type Delta = Option<f32>;
25        type DeltaOwned = Option<f32>;
26
27        fn create_delta_towards(&self, end_state: &Self) -> CreatedDelta<Self::Delta> {
28            self.0.create_delta_towards(&end_state.0)
29        }
30    }
31
32    impl Patchable<Option<f32>> for F32TestWrapper {
33        fn apply_patch(&mut self, patch: Option<f32>) {
34            self.0.apply_patch(patch)
35        }
36    }
37
38    impl<'s, 'e> Diffable<'s, 'e, F64TestWrapper> for F64TestWrapper {
39        type Delta = Option<f64>;
40        type DeltaOwned = Option<f64>;
41
42        fn create_delta_towards(&self, end_state: &Self) -> CreatedDelta<Self::Delta> {
43            self.0.create_delta_towards(&end_state.0)
44        }
45    }
46
47    impl Patchable<Option<f64>> for F64TestWrapper {
48        fn apply_patch(&mut self, patch: Option<f64>) {
49            self.0.apply_patch(patch)
50        }
51    }
52
53    impl Eq for F32TestWrapper {}
54    impl Eq for F64TestWrapper {}
55
56    impl PartialEq for F32TestWrapper {
57        fn eq(&self, other: &Self) -> bool {
58            (self.0 - other.0).abs() < f32::EPSILON
59        }
60    }
61
62    impl PartialEq for F64TestWrapper {
63        fn eq(&self, other: &Self) -> bool {
64            (self.0 - other.0).abs() < f64::EPSILON
65        }
66    }
67
68    #[test]
69    fn f32_unchanged() {
70        DipaImplTester {
71            label: Some("Diff patch same f32"),
72            start: &mut F32TestWrapper(0.),
73            end: &F32TestWrapper(0.),
74            expected_delta: None,
75            expected_serialized_patch_size: 1,
76            expected_did_change: false,
77        }
78        .test();
79    }
80
81    #[test]
82    fn f32_changed() {
83        DipaImplTester {
84            label: Some("Diff patch different f32"),
85            start: &mut F32TestWrapper(0.),
86            end: &F32TestWrapper(5.),
87            expected_delta: Some(5.),
88            expected_serialized_patch_size: 5,
89            expected_did_change: true,
90        }
91        .test();
92    }
93
94    #[test]
95    fn f64_unchanged() {
96        DipaImplTester {
97            label: Some("Diff patch different f64"),
98            start: &mut F64TestWrapper(0.),
99            end: &F64TestWrapper(0.),
100            expected_delta: None,
101            expected_serialized_patch_size: 1,
102            expected_did_change: false,
103        }
104        .test();
105    }
106
107    #[test]
108    fn f64_changed() {
109        DipaImplTester {
110            label: Some("Diff patch different f64"),
111            start: &mut F64TestWrapper(0.),
112            end: &F64TestWrapper(5.),
113            expected_delta: Some(5.),
114            expected_serialized_patch_size: 9,
115            expected_did_change: true,
116        }
117        .test();
118    }
119}
cumulo_dipa/float.rs

cumulo_dipa/
float.rs
