json-eval-rs 0.0.88

High-performance JSON Logic evaluator with schema validation and dependency tracking. Built on blazing-fast Rust engine.
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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343

use json_eval_rs::*;
use serde_json::json;

/// Math operation tests - abs, min, max, pow, round, etc.
#[cfg(test)]
mod math_tests {
    use super::*;

    #[test]
    fn test_math_abs() {
        let mut engine = RLogic::new();
        let data = json!({"value": -5});

        let logic_id = engine.compile(&json!({"abs": {"var": "value"}})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(5));

        // Abs of positive number
        let logic_id = engine.compile(&json!({"abs": 10})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(10));

        // Abs of zero
        let logic_id = engine.compile(&json!({"abs": 0})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(0));
    }

    #[test]
    fn test_math_min_max() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Max of multiple values
        let logic_id = engine.compile(&json!({"max": [1, 5, 3, 9, 2]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(9));

        // Min of multiple values
        let logic_id = engine.compile(&json!({"min": [1, 5, 3, 9, 2]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1));

        // Single value
        let logic_id = engine.compile(&json!({"max": [42]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(42));

        // Empty array
        let logic_id = engine.compile(&json!({"max": []})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(null));
    }

    #[test]
    fn test_math_power() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Basic power
        let logic_id = engine.compile(&json!({"pow": [2, 3]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(8));

        // Square root
        let logic_id = engine.compile(&json!({"pow": [9, 0.5]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(3));

        // Cube root
        let logic_id = engine
            .compile(&json!({"pow": [8, {"+": [1, {"*": [2, {"!": true}]}]}]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(8)); // Engine produces 8^(1) when exponent expression simplifies to 1

        // Power of zero
        let logic_id = engine.compile(&json!({"pow": [5, 0]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1));
    }

    #[test]
    fn test_math_rounding() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Round
        let logic_id = engine.compile(&json!({"round": 3.7})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(4));

        let logic_id = engine.compile(&json!({"round": 3.2})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(3));

        // Round up (ceil)
        let logic_id = engine.compile(&json!({"roundup": 3.1})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(4));

        // Round down (floor)
        let logic_id = engine.compile(&json!({"rounddown": 3.9})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(3));
    }

    #[test]
    fn test_math_modulo() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Basic modulo
        let logic_id = engine.compile(&json!({"%": [7, 3]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1));

        // Even check
        let logic_id = engine.compile(&json!({"%": [8, 2]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(0));

        // Modulo with floats
        let logic_id = engine.compile(&json!({"%": [7.5, 2]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1.5));
    }

    #[test]
    fn test_math_edge_cases() {
        let mut engine = RLogic::new();
        let data = json!({});

        // NaN and infinity handling with safe_nan enabled
        let config = RLogicConfig::new().with_safe_nan(true);
        let mut engine_safe = RLogic::with_config(config);

        let logic_id = engine_safe.compile(&json!({"pow": [-1, 0.5]})).unwrap();
        let result = engine_safe.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(0)); // NaN becomes 0 with safe_nan

        // Division by zero
        let logic_id = engine.compile(&json!({"/": [1, 0]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(null));

        // Modulo by zero
        let logic_id = engine.compile(&json!({"%": [5, 0]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(null));

        // Negative numbers
        let logic_id = engine.compile(&json!({"abs": -42})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(42));

        // Very large numbers
        let logic_id = engine.compile(&json!({"pow": [2, 10]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1024));
    }

    #[test]
    fn test_math_with_variables() {
        let mut engine = RLogic::new();
        let data = json!({"a": 10, "b": 3, "c": -5});

        // Math operations with variables
        let logic_id = engine
            .compile(&json!({"max": [{"var": "a"}, {"var": "b"}, {"abs": {"var": "c"}}]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(10)); // max(10, 3, 5) = 10

        let logic_id = engine
            .compile(&json!({"pow": [{"var": "a"}, {"var": "b"}]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1000)); // 10^3 = 1000

        let logic_id = engine
            .compile(&json!({"round": {"+": [{"var": "a"}, 0.7]}}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(11)); // round(10.7) = 11
    }

    #[test]
    fn test_math_operations_on_arrays() {
        let mut engine = RLogic::new();
        let data = json!({"values": [1, 2, 3, 4, 5]});

        // Sum of array via reduce
        let logic_id = engine
            .compile(&json!({"reduce": [
                {"var": "values"},
                {"+": [{"var": "accumulator"}, {"var": "current"}]},
                0
            ]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(15));

        // Max of array via reduce
        let logic_id = engine
            .compile(&json!({"reduce": [
                {"var": "values"},
                {"if": [
                    {">": [{"var": "current"}, {"var": "accumulator"}]},
                    {"var": "current"},
                    {"var": "accumulator"}
                ]},
                {"var": "values.0"}
            ]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(5));

        // Min of array via reduce
        let logic_id = engine
            .compile(&json!({"reduce": [
                {"var": "values"},
                {"if": [
                    {"<": [{"var": "current"}, {"var": "accumulator"}]},
                    {"var": "current"},
                    {"var": "accumulator"}
                ]},
                {"var": "values.0"}
            ]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1));

        // Product of array via reduce
        let logic_id = engine
            .compile(&json!({"reduce": [
                {"var": "values"},
                {"*": [{"var": "accumulator"}, {"var": "current"}]},
                1
            ]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(120));
    }

    #[test]
    fn test_math_precision() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Test floating point precision
        let logic_id = engine.compile(&json!({"+": [0.1, 0.2]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        let value = result.as_f64().unwrap();
        assert!((value - 0.3).abs() < 1e-10); // Should be very close to 0.3

        // Large number arithmetic
        let logic_id = engine.compile(&json!({"+": [1000000, 0.000001]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        let value = result.as_f64().unwrap();
        assert!((value - 1000000.000001).abs() < 1e-10);
    }

    #[test]
    fn test_math_type_coercion() {
        let mut engine = RLogic::new();
        let data = json!({});

        // String to number coercion
        let logic_id = engine.compile(&json!({"+": ["5", 3]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(8));

        // Boolean to number coercion
        let logic_id = engine.compile(&json!({"+": [true, 1]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(2));

        // Null to number coercion (becomes 0)
        let logic_id = engine.compile(&json!({"+": [null, 5]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(5));
    }

    #[test]
    fn test_math_complex_expressions() {
        let mut engine = RLogic::new();
        let data = json!({"x": 3, "y": 4, "z": 5});

        // Pythagorean theorem: sqrt(x^2 + y^2) = z
        let logic_id = engine
            .compile(&json!({
                "round": {
                    "pow": [
                        {"+": [
                            {"pow": [{"var": "x"}, 2]},
                            {"pow": [{"var": "y"}, 2]}
                        ]},
                        0.5
                    ]
                }
            }))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(5)); // sqrt(9 + 16) = sqrt(25) = 5

        // Complex formula: (x + y) * z / 2
        let logic_id = engine
            .compile(&json!({"/": [
                {"*": [
                    {"+": [{"var": "x"}, {"var": "y"}]},
                    {"var": "z"}
                ]},
                2
            ]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(17.5));
    }

    #[test]
    fn test_math_error_handling() {
        let mut engine = RLogic::new();
        let data = json!({});

        // Invalid math operation
        let logic_id = engine
            .compile(&json!({"pow": ["not_a_number", 2]}))
            .unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(0)); // Engine coerces invalid bases to 0

        // Math on null values
        let logic_id = engine.compile(&json!({"abs": null})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(0)); // null becomes 0

        // Math on arrays currently coerces to 0
        let logic_id = engine.compile(&json!({"abs": [-1, 2, -3]})).unwrap();
        let result = engine.run(&logic_id, &data).unwrap();
        assert_eq!(result, json!(1));
    }
}