arrow2 0.18.0

Unofficial implementation of Apache Arrow spec in safe Rust
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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161

use arrow2::array::*;
use arrow2::bitmap::Bitmap;
use arrow2::compute::arithmetics::basic::*;
use arrow2::compute::arithmetics::{
    ArrayAdd, ArrayCheckedAdd, ArrayOverflowingAdd, ArraySaturatingAdd,
};

#[test]
#[should_panic]
fn test_add_mismatched_length() {
    let a = Int32Array::from_slice([5, 6]);
    let b = Int32Array::from_slice([5]);
    add(&a, &b);
}

#[test]
fn test_add() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let b = Int32Array::from(&[Some(5), None, None, Some(6)]);
    let result = add(&a, &b);
    let expected = Int32Array::from(&[None, None, None, Some(12)]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.add(&b);
    assert_eq!(result, expected);
}

#[test]
#[should_panic]
fn test_add_panic() {
    let a = Int8Array::from(&[Some(100i8)]);
    let b = Int8Array::from(&[Some(100i8)]);
    add(&a, &b);
}

#[test]
fn test_add_checked() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let b = Int32Array::from(&[Some(5), None, None, Some(6)]);
    let result = checked_add(&a, &b);
    let expected = Int32Array::from(&[None, None, None, Some(12)]);
    assert_eq!(result, expected);

    let a = Int8Array::from(&[Some(100i8), Some(100i8), Some(100i8)]);
    let b = Int8Array::from(&[Some(0i8), Some(100i8), Some(0i8)]);
    let result = checked_add(&a, &b);
    let expected = Int8Array::from(&[Some(100i8), None, Some(100i8)]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.checked_add(&b);
    assert_eq!(result, expected);
}

#[test]
fn test_add_saturating() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let b = Int32Array::from(&[Some(5), None, None, Some(6)]);
    let result = saturating_add(&a, &b);
    let expected = Int32Array::from(&[None, None, None, Some(12)]);
    assert_eq!(result, expected);

    let a = Int8Array::from(&[Some(100i8)]);
    let b = Int8Array::from(&[Some(100i8)]);
    let result = saturating_add(&a, &b);
    let expected = Int8Array::from(&[Some(127)]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.saturating_add(&b);
    assert_eq!(result, expected);
}

#[test]
fn test_add_overflowing() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let b = Int32Array::from(&[Some(5), None, None, Some(6)]);
    let (result, overflow) = overflowing_add(&a, &b);
    let expected = Int32Array::from(&[None, None, None, Some(12)]);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, false, false, false]));

    let a = Int8Array::from(&[Some(1i8), Some(100i8)]);
    let b = Int8Array::from(&[Some(1i8), Some(100i8)]);
    let (result, overflow) = overflowing_add(&a, &b);
    let expected = Int8Array::from(&[Some(2i8), Some(-56i8)]);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, true]));

    // Trait testing
    let (result, overflow) = a.overflowing_add(&b);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, true]));
}

#[test]
fn test_add_scalar() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let result = add_scalar(&a, &1i32);
    let expected = Int32Array::from(&[None, Some(7), None, Some(7)]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.add(&1i32);
    assert_eq!(result, expected);
}

#[test]
fn test_add_scalar_checked() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let result = checked_add_scalar(&a, &1i32);
    let expected = Int32Array::from(&[None, Some(7), None, Some(7)]);
    assert_eq!(result, expected);

    let a = Int8Array::from(&[None, Some(100), None, Some(100)]);
    let result = checked_add_scalar(&a, &100i8);
    let expected = Int8Array::from(&[None, None, None, None]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.checked_add(&100i8);
    assert_eq!(result, expected);
}

#[test]
fn test_add_scalar_saturating() {
    let a = Int32Array::from(&[None, Some(6), None, Some(6)]);
    let result = saturating_add_scalar(&a, &1i32);
    let expected = Int32Array::from(&[None, Some(7), None, Some(7)]);
    assert_eq!(result, expected);

    let a = Int8Array::from(&[Some(100i8)]);
    let result = saturating_add_scalar(&a, &100i8);
    let expected = Int8Array::from(&[Some(127)]);
    assert_eq!(result, expected);

    // Trait testing
    let result = a.saturating_add(&100i8);
    assert_eq!(result, expected);
}

#[test]
fn test_add_scalar_overflowing() {
    let a = Int32Array::from(&vec![None, Some(6), None, Some(6)]);
    let (result, overflow) = overflowing_add_scalar(&a, &1i32);
    let expected = Int32Array::from(&vec![None, Some(7), None, Some(7)]);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, false, false, false]));

    let a = Int8Array::from(&vec![Some(1i8), Some(100i8)]);
    let (result, overflow) = overflowing_add_scalar(&a, &100i8);
    let expected = Int8Array::from(&vec![Some(101i8), Some(-56i8)]);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, true]));

    // Trait testing
    let (result, overflow) = a.overflowing_add(&100i8);
    assert_eq!(result, expected);
    assert_eq!(overflow, Bitmap::from([false, true]));
}