ruchy 4.2.1

A systems scripting language that transpiles to idiomatic Rust with extreme quality engineering
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

//! ORACLE-CLI: Tests for oracle train/save/status subcommands
//!
//! Extreme TDD - RED phase: All tests should fail initially
//!
//! # Test Coverage
//! - `oracle train` - Train model from bootstrap samples
//! - `oracle save` - Persist trained model to .apr file
//! - `oracle status` - Display model statistics
//! - `oracle classify` - Classify error (existing functionality)

use assert_cmd::Command;
use predicates::prelude::*;
use std::fs;
use tempfile::TempDir;

/// Helper to get ruchy command
fn ruchy_cmd() -> Command {
    assert_cmd::cargo::cargo_bin_cmd!("ruchy")
}

// ============================================================================
// RED PHASE: oracle train tests
// ============================================================================

#[test]
fn test_oracle_train_basic() {
    // Train oracle from bootstrap samples
    ruchy_cmd()
        .args(["oracle", "train"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Training"));
}

#[test]
fn test_oracle_train_verbose() {
    // Train with verbose output showing progress
    ruchy_cmd()
        .args(["oracle", "train", "--verbose"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Samples"))
        .stdout(predicate::str::contains("Accuracy"));
}

#[test]
fn test_oracle_train_json_output() {
    // Train with JSON output format
    ruchy_cmd()
        .args(["oracle", "train", "--format", "json"])
        .assert()
        .success()
        .stdout(predicate::str::contains("\"status\""))
        .stdout(predicate::str::contains("\"samples\""));
}

// ============================================================================
// RED PHASE: oracle save tests
// ============================================================================

#[test]
fn test_oracle_save_default_path() {
    let temp_dir = TempDir::new().expect("create temp dir");
    let model_path = temp_dir.path().join("ruchy_oracle.apr");

    // Train and save to default location
    ruchy_cmd().args(["oracle", "train"]).assert().success();

    ruchy_cmd()
        .args(["oracle", "save", model_path.to_str().unwrap()])
        .assert()
        .success()
        .stdout(predicate::str::contains("Saved"));

    // Verify file exists
    assert!(model_path.exists(), "Model file should be created");
}

#[test]
fn test_oracle_save_custom_path() {
    let temp_dir = TempDir::new().expect("create temp dir");
    let custom_path = temp_dir.path().join("custom_model.apr");

    ruchy_cmd()
        .args(["oracle", "save", custom_path.to_str().unwrap()])
        .assert()
        .success();

    assert!(custom_path.exists(), "Custom model file should be created");
}

#[test]
fn test_oracle_save_overwrites_existing() {
    let temp_dir = TempDir::new().expect("create temp dir");
    let model_path = temp_dir.path().join("model.apr");

    // Create dummy file
    fs::write(&model_path, "dummy").expect("create dummy file");

    // Save should overwrite
    ruchy_cmd()
        .args(["oracle", "save", model_path.to_str().unwrap()])
        .assert()
        .success();

    // Verify file was overwritten (should be larger than "dummy")
    let metadata = fs::metadata(&model_path).expect("get metadata");
    assert!(metadata.len() > 5, "Model file should be larger than dummy");
}

// ============================================================================
// RED PHASE: oracle status tests
// ============================================================================

#[test]
fn test_oracle_status_trained() {
    // Status shows trained status (oracle auto-trains from bootstrap on first use)
    ruchy_cmd()
        .args(["oracle", "status"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Status"));
}

#[test]
fn test_oracle_status_after_train() {
    // Train and save, then check status
    let temp_dir = TempDir::new().expect("create temp dir");
    let model_path = temp_dir.path().join("model.apr");

    // Train and save to file
    ruchy_cmd()
        .args(["oracle", "save", model_path.to_str().unwrap()])
        .assert()
        .success();

    // Status should show trained when model file exists
    // Note: CLI runs are independent, status checks for persisted model
    ruchy_cmd()
        .args(["oracle", "status"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Status"));
}

#[test]
#[ignore = "RED phase: oracle status --format json not yet implemented - ORACLE-001"]
fn test_oracle_status_json() {
    // JSON output contains status field and other model info
    ruchy_cmd()
        .args(["oracle", "status", "--format", "json"])
        .assert()
        .success()
        .stdout(predicate::str::contains("\"status\""))
        .stdout(predicate::str::contains("\"accuracy\""))
        .stdout(predicate::str::contains("\"samples\""));
}

// ============================================================================
// RED PHASE: oracle classify tests (existing, should still work)
// ============================================================================

#[test]
fn test_oracle_classify_basic() {
    // Classifier output depends on trained model - just verify it returns a category
    ruchy_cmd()
        .args(["oracle", "classify", "error[E0308]: mismatched types"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Category:"));
}

#[test]
fn test_oracle_classify_with_code() {
    ruchy_cmd()
        .args(["oracle", "classify", "mismatched types", "--code", "E0308"])
        .assert()
        .success();
}

#[test]
fn test_oracle_classify_json() {
    ruchy_cmd()
        .args([
            "oracle",
            "classify",
            "borrow of moved value",
            "--format",
            "json",
        ])
        .assert()
        .success()
        .stdout(predicate::str::contains("\"category\""));
}

// ============================================================================
// RED PHASE: oracle load tests
// ============================================================================

#[test]
fn test_oracle_load_existing_model() {
    let temp_dir = TempDir::new().expect("create temp dir");
    let model_path = temp_dir.path().join("model.apr");

    // Train and save
    ruchy_cmd()
        .args(["oracle", "save", model_path.to_str().unwrap()])
        .assert()
        .success();

    // Load should succeed
    ruchy_cmd()
        .args(["oracle", "load", model_path.to_str().unwrap()])
        .assert()
        .success()
        .stdout(predicate::str::contains("Loaded"));
}

#[test]
fn test_oracle_load_nonexistent_fails() {
    ruchy_cmd()
        .args(["oracle", "load", "/nonexistent/model.apr"])
        .assert()
        .failure();
}

// ============================================================================
// RED PHASE: Integration tests
// ============================================================================

#[test]
fn test_oracle_train_save_load_classify_roundtrip() {
    let temp_dir = TempDir::new().expect("create temp dir");
    let model_path = temp_dir.path().join("roundtrip.apr");

    // Train
    ruchy_cmd().args(["oracle", "train"]).assert().success();

    // Save
    ruchy_cmd()
        .args(["oracle", "save", model_path.to_str().unwrap()])
        .assert()
        .success();

    // Verify .apr exists and has correct magic bytes
    let contents = fs::read(&model_path).expect("read model");
    assert_eq!(&contents[0..4], b"APRN", "Should have APR magic bytes");

    // Load
    ruchy_cmd()
        .args(["oracle", "load", model_path.to_str().unwrap()])
        .assert()
        .success();

    // Classify should work
    ruchy_cmd()
        .args(["oracle", "classify", "error[E0308]: mismatched types"])
        .assert()
        .success();
}

#[test]
fn test_oracle_help_shows_subcommands() {
    ruchy_cmd()
        .args(["oracle", "--help"])
        .assert()
        .success()
        .stdout(predicate::str::contains("train"))
        .stdout(predicate::str::contains("save"))
        .stdout(predicate::str::contains("status"))
        .stdout(predicate::str::contains("classify"));
}