ralph-agent-loop 0.4.0

A Rust CLI for managing AI agent loops with a structured JSON task queue
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

//! Dependency validation runtime tests.
//!
//! Responsibilities:
//! - Cover dependency warning semantics and chain-depth limits.
//! - Verify rejected/done dependency handling across queue and done sets.
//! - Keep dependency-chain expectations isolated from relationship tests.
//!
//! Not handled here:
//! - Core required-field validation.
//! - `blocks`, `relates_to`, `duplicates`, or parent validation.
//!
//! Invariants/assumptions:
//! - Dependency warnings do not escalate to validation errors in these cases.
//! - Task builders encode only the dependency edges under test.

use crate::contracts::{QueueFile, TaskStatus};

use super::support::{task_with, task_with_deps};
use crate::queue::validation::validate_queue_set;

#[test]
fn validate_warns_on_dependency_to_rejected_task() {
    let mut rejected = task_with("RQ-0002", TaskStatus::Rejected, vec![]);
    rejected.completed_at = Some("2026-01-18T00:00:00Z".to_string());

    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            rejected,
        ],
    };
    let done = QueueFile {
        version: 1,
        tasks: vec![],
    };

    let warnings = validate_queue_set(&active, Some(&done), "RQ", 4, 10)
        .expect("Should not error on rejected dependency");
    assert!(
        warnings
            .iter()
            .any(|warning| warning.task_id == "RQ-0001" && warning.message.contains("rejected")),
        "Should warn about dependency on rejected task"
    );
}

#[test]
fn validate_warns_on_deep_dependency_chain() {
    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            task_with_deps("RQ-0002", TaskStatus::Todo, vec!["RQ-0003".to_string()]),
            task_with_deps("RQ-0003", TaskStatus::Todo, vec!["RQ-0004".to_string()]),
            task_with_deps("RQ-0004", TaskStatus::Todo, vec!["RQ-0005".to_string()]),
            task_with_deps("RQ-0005", TaskStatus::Todo, vec!["RQ-0006".to_string()]),
            task_with_deps("RQ-0006", TaskStatus::Todo, vec!["RQ-0007".to_string()]),
            task_with_deps("RQ-0007", TaskStatus::Todo, vec!["RQ-0008".to_string()]),
            task_with_deps("RQ-0008", TaskStatus::Todo, vec!["RQ-0009".to_string()]),
            task_with_deps("RQ-0009", TaskStatus::Todo, vec!["RQ-0010".to_string()]),
            task_with_deps("RQ-0010", TaskStatus::Todo, vec!["RQ-0011".to_string()]),
            task_with_deps("RQ-0011", TaskStatus::Todo, vec!["RQ-0012".to_string()]),
            task_with_deps("RQ-0012", TaskStatus::Todo, vec![]),
        ],
    };

    let warnings =
        validate_queue_set(&active, None, "RQ", 4, 10).expect("Should not error on deep chain");
    assert!(
        warnings
            .iter()
            .any(|warning| warning.message.contains("depth")),
        "Should warn about deep dependency chain: {:?}",
        warnings
    );
}

#[test]
fn validate_allows_shallow_dependency_chain() {
    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            task_with_deps("RQ-0002", TaskStatus::Todo, vec!["RQ-0003".to_string()]),
            task_with_deps("RQ-0003", TaskStatus::Todo, vec![]),
        ],
    };

    let warnings =
        validate_queue_set(&active, None, "RQ", 4, 10).expect("Should not error on shallow chain");
    assert!(
        !warnings
            .iter()
            .any(|warning| warning.message.contains("depth")),
        "Should not warn about shallow dependency chain"
    );
}

#[test]
fn validate_warns_on_blocked_dependency_chain() {
    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            task_with_deps("RQ-0002", TaskStatus::Todo, vec!["RQ-0003".to_string()]),
            task_with_deps("RQ-0003", TaskStatus::Todo, vec![]),
        ],
    };

    let warnings =
        validate_queue_set(&active, None, "RQ", 4, 10).expect("Should not error on blocked chain");
    assert!(
        warnings
            .iter()
            .any(|warning| warning.message.contains("blocked")),
        "Should warn about blocked dependency chain: {:?}",
        warnings
    );
}

#[test]
fn validate_allows_unblocked_chain_with_done_task() {
    let mut done_task = task_with("RQ-0003", TaskStatus::Done, vec![]);
    done_task.completed_at = Some("2026-01-18T00:00:00Z".to_string());

    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            task_with_deps("RQ-0002", TaskStatus::Todo, vec!["RQ-0003".to_string()]),
        ],
    };
    let done = QueueFile {
        version: 1,
        tasks: vec![done_task],
    };

    let warnings = validate_queue_set(&active, Some(&done), "RQ", 4, 10)
        .expect("Should not error on unblocked chain");
    assert!(
        !warnings
            .iter()
            .any(|warning| warning.message.contains("blocked")),
        "Should not warn about unblocked dependency chain: {:?}",
        warnings
    );
}

#[test]
fn validate_detects_transitive_rejected_dependency() {
    let mut rejected = task_with("RQ-0003", TaskStatus::Rejected, vec![]);
    rejected.completed_at = Some("2026-01-18T00:00:00Z".to_string());

    let active = QueueFile {
        version: 1,
        tasks: vec![
            task_with_deps("RQ-0001", TaskStatus::Todo, vec!["RQ-0002".to_string()]),
            task_with_deps("RQ-0002", TaskStatus::Todo, vec!["RQ-0003".to_string()]),
            rejected,
        ],
    };

    let warnings = validate_queue_set(&active, None, "RQ", 4, 10)
        .expect("Should not error on rejected dependency");
    assert!(
        warnings
            .iter()
            .any(|warning| warning.message.contains("rejected")
                || warning.message.contains("blocked")),
        "Should warn about rejected or blocked dependency: {:?}",
        warnings
    );
}

#[test]
fn validate_no_warnings_for_valid_dependencies() {
    let mut done_task = task_with("RQ-0002", TaskStatus::Done, vec![]);
    done_task.completed_at = Some("2026-01-18T00:00:00Z".to_string());

    let active = QueueFile {
        version: 1,
        tasks: vec![task_with_deps(
            "RQ-0001",
            TaskStatus::Todo,
            vec!["RQ-0002".to_string()],
        )],
    };
    let done = QueueFile {
        version: 1,
        tasks: vec![done_task],
    };

    let warnings = validate_queue_set(&active, Some(&done), "RQ", 4, 10)
        .expect("Should not error on valid dependencies");
    assert!(
        warnings.is_empty(),
        "Should have no warnings for valid dependencies: {:?}",
        warnings
    );
}