nodety 0.1.1

Easy to use library for node editor types, generics, inference and validation
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

use crate::common::{graph, sig_u};
use assert_matches::assert_matches;
use maplit::hashset;
use nodety::{
    Nodety,
    demo_type::DemoType,
    inference::InferenceConfig,
    validation::{ValidationError, ValidationErrorKind},
};

mod common;

///                  <T extends Comparable>
///  |    int| ----- |T                   |
#[test]
pub fn test_validate_bounds() {
    let engine = graph(vec![sig_u("() -> (Integer)"), sig_u("<T extends Comparable>(T) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));

    assert_eq!(errors, []);
}

///                  <T extends Countable>
///  |    int| ----- |T                  |
#[test]
pub fn test_validate_invalid_bounds() {
    let engine = graph(vec![sig_u("() -> (Integer)"), sig_u("<T extends Countable>(T) -> ()")], vec![(0, 1, 0, 0)]);
    let scopes = engine.infer(InferenceConfig::default());
    let errors = engine.validate(&scopes);

    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::InsufficientlyInferredTypes, .. });
}

/// Don't delete this test! It tests, that type params can only get inferred when their bounds are inferred.
/// More info in Candidates::pick_best`.
///
///                  <T, U extends T>
///  |    int| ----- |T             |
///  | String| ----- |U             |
#[test]
pub fn test_validate_invalid_bounds_complex() {
    let engine = graph(
        vec![sig_u("() -> (Integer, String)"), sig_u("<T, U extends T>(T, U) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::InsufficientlyInferredTypes, .. });
}

#[test]
pub fn test_validate_edge_directions_valid() {
    let engine = graph(vec![sig_u("() -> (Integer)"), sig_u("(Comparable) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);

    // invalid
    let engine = graph(vec![sig_u("() -> (Comparable)"), sig_u("(Integer) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::TypeMismatch(_), .. });
}

///                      <T, U extends Array<T>>
///  |        int| ----- |T                    |
///  | Array<int>| ----- |U                    |
#[test]
pub fn test_validate_bounds_complex() {
    let engine = graph(
        vec![sig_u("() -> (Integer, Array<Integer>)"), sig_u("<T, U extends Array<T>>(T, U) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

///     <T>       <T>
///  |   T| ----- |T   |
#[test]
pub fn test_validate_identity() {
    let engine = graph(vec![sig_u("<T>() -> (T)"), sig_u("<T>(T) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

///      |  int| ----- |int   int| ----- |int             int|
///tags: |1,2  |       |1,2      |       |1,2 (required 1, 2)|
#[test]
pub fn test_validate_tags() {
    let engine = graph(
        vec![
            sig_u("() -> (Integer)").with_tags(hashset! {1,2}),
            sig_u("(Integer) -> (Integer)").with_tags(hashset! {1,2}),
            sig_u("(Integer) -> ()").with_required_tags(hashset! {1,2}),
        ],
        vec![(0, 1, 0, 0), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

///      |  int| ----- |int   int| ----- |int                |
///tags: |1    |       |1,2      |       |1,2 (required 1, 2)|
#[test]
pub fn test_invalidate_tags() {
    let engine = graph(
        vec![
            sig_u("() -> (Integer)").with_tags(hashset! {1}),
            sig_u("(Integer) -> (Integer)").with_tags(hashset! {1,2}),
            sig_u("(Integer) -> ()").with_required_tags(hashset! {1,2}),
        ],
        vec![(0, 1, 0, 0), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_matches!(&errors[0], ValidationError { kind: ValidationErrorKind::TagMissing(tags), .. } if tags == &hashset! {2});
}

///  |int  |
#[test]
pub fn test_validate_edge_missing() {
    let engine = graph(vec![sig_u("(Integer) -> ()")], vec![]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::EdgeMissingOnInput, .. });
}

///                              <T, U extends keyof T>
///  |   {a: Any, b: Any}| ----- |T                   |
///  |               "a" | ----- |U                   |
#[test]
pub fn test_valid_keyof() {
    let engine = graph(
        vec![sig_u("() -> ({a: Any, b: Any}, 'a')"), sig_u("<T, U extends keyof T>(T, U) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

///                              <T, U extends keyof T>
///  |   {a: Any, b: Any}| ----- |T                   |
///  |           "a"|"b" | ----- |U                   |
#[test]
pub fn test_valid_keyof_union() {
    let engine = graph(
        vec![sig_u("() -> ({a: Any, b: Any}, 'a'|'b')"), sig_u("<#0, #1 extends keyof #0>(#0, #1) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    // let scope = scopes.get(&NodeIndex::from(1)).unwrap();

    assert_eq!(errors, []);
}

///                              <T, U extends keyof T>
///  |   {a: Any, b: Any}| ----- |T                   |
///  |               "c" | ----- |U                   |
#[test]
pub fn test_invalid_keyof() {
    let engine = graph(
        vec![sig_u("() -> ({a: Any, b: Any}, 'c')"), sig_u("<T, U extends keyof T>(T, U) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let scopes = engine.infer(InferenceConfig::default());
    let errors = engine.validate(&scopes);
    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::InsufficientlyInferredTypes, .. });
}

#[test]
pub fn test_invalid_type() {
    let engine = graph(vec![sig_u("() -> (Integer)"), sig_u("(String) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::TypeMismatch(_), .. });
}

#[test]
pub fn test_stuff() {
    let engine = graph(vec![sig_u("<T>() -> (T)"), sig_u("(Array<{a: Integer}>) -> ()")], vec![(0, 1, 0, 0)]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

/// | String default: "str" |
#[test]
pub fn test_default_types_type() {
    let engine = graph(vec![sig_u("(String = 'str') -> ()")], vec![]);
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

#[test]
fn test_validate_index_type() {
    let engine = graph(
        vec![sig_u("() -> ({a: Integer}, 'b')"), sig_u("<#0, #1, #2 extends #0[#1]>(#0, #1) -> ()")],
        vec![(0, 1, 0, 0), (0, 1, 1, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

#[test]
fn test_validate_intersection() {
    let engine = graph(
        vec![
            sig_u("() -> ({a: Integer}, {b: Float})"),
            sig_u("<#0, #1, #2 extends #0 & #1>(#0, #1) -> (#2)"),
            sig_u("({a: Integer, b: Float}) -> ()"),
        ],
        vec![(0, 1, 0, 0), (0, 1, 1, 1), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

#[test]
fn test_validate_intersection_invalid() {
    let engine = graph(
        vec![
            sig_u("() -> ({a: Integer}, {a: Integer})"),
            sig_u("<#0, #1, #2 extends #0 & #1>(#0, #1) -> (#2)"),
            sig_u("({a: Float}) -> ()"),
        ],
        vec![(0, 1, 0, 0), (0, 1, 1, 1), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));

    assert_matches!(errors[0], ValidationError { kind: ValidationErrorKind::InsufficientlyInferredTypes, .. });
}

#[test]
fn test_validate_non_unit() {
    let engine = graph(
        vec![sig_u("() -> (Integer|Unit)"), sig_u("<T>(T) -> (T extends Unit ? Never : T)"), sig_u("(Integer) -> ()")],
        vec![(0, 1, 0, 0), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));
    assert_eq!(errors, []);
}

#[test]
fn test_validate_generic_closure() {
    let engine = graph(
        vec![
            sig_u("() -> (Array<{}>)"),
            sig_u("<#0 extends Any -> Never>() -> (#0)"),
            sig_u("<#1>(#1, (#1[Integer]) -> (Boolean)) -> ()"),
        ],
        vec![(0, 2, 0, 0), (1, 2, 0, 1)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));

    assert_eq!(errors, []);
}

#[test]
fn test_runtime_panicked() {
    let engine = graph(
        vec![
            sig_u("() -> (Array<{'false start': Boolean}>)"),
            sig_u("<I extends {}>(Array<I>) -> (I & {place: Integer|Unit, competitor: Integer})"),
            sig_u("<T, K extends keyof T>(T, K = 'place') -> (T[K])"),
        ],
        vec![(0, 1, 0, 0), (1, 2, 0, 0)],
    );
    let errors = engine.validate(&engine.infer(InferenceConfig::default()));

    assert_eq!(errors, []);
}

#[test]
fn test_validate_multiple_edges_on_one_input() {
    let mut nodety = Nodety::<DemoType>::new();
    let a = nodety.add_node(sig_u("() -> (Integer)")).unwrap();
    let b = nodety.add_node(sig_u("() -> (Integer)")).unwrap();
    let c = nodety.add_node(sig_u("(Integer) -> ()")).unwrap();
    nodety.add_edge(a, c, 0, 0);
    nodety.add_edge(b, c, 0, 0);

    let errors = nodety.validate(&nodety.infer(InferenceConfig::default()));
    assert!(errors.iter().any(|e| matches!(e.kind, ValidationErrorKind::MultipleEdgesOnOneInput)));
}