yog 0.0.1

yog: a balls-oriented session manager for lernie loops (egui frontend)
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

//! Tick / sweep / re-derivation / adoption tests (§7.2, §7.3).

use super::super::*;
use super::{Harness, agent};
use crate::cli_outbound::Binary;
use crate::git_tree::{AgentState, GitTree};
use std::path::{Path, PathBuf};
use std::time::Duration;

fn agent_count(model: &AppModel, ws: &Path) -> usize {
    model.tree(ws).map_or(0, |t| t.agents.len())
}

/// Drive one dirty workspace root through the 100 ms debounce and re-derive it.
fn settle(model: &mut AppModel, clock: &crate::test_support::FakeClock) {
    clock.advance(Duration::from_millis(10));
    model.tick(); // opens the debounce window
    clock.advance(Duration::from_millis(150));
    model.tick(); // window elapsed → re-derive
}

#[test]
fn a_dirty_workspace_root_re_derives_its_snapshot() {
    let h = Harness::new();
    let (clock, mut model) = h.model();
    assert_eq!(agent_count(&model, &h.ws), 1);
    h.build_more("c-2", "world"); // a second agent lands on disk
    assert_eq!(agent_count(&model, &h.ws), 1, "stale until re-derived");

    model.dirty_handle().mark_all([h.ws.clone()]);
    clock.advance(Duration::from_millis(10));
    assert!(!model.tick(), "debounced within the window");
    clock.advance(Duration::from_millis(150));
    assert!(model.tick(), "window elapsed → snapshot replaced");
    assert_eq!(agent_count(&model, &h.ws), 2);
}

#[test]
fn an_unchanged_re_derivation_replaces_nothing() {
    let h = Harness::new();
    let (clock, mut model) = h.model();
    model.dirty_handle().mark_all([h.ws.clone()]);
    clock.advance(Duration::from_millis(10));
    model.tick();
    clock.advance(Duration::from_millis(150));
    assert!(
        !model.tick(),
        "an unchanged tree suppresses the replacement"
    );
}

#[test]
fn a_failed_re_read_keeps_the_last_snapshot() {
    let h = Harness::new();
    let (clock, mut model) = h.model();
    // A bogus workspace root that cannot derive: routed as a workspace, debounced,
    // then `probes.derive` fails → no snapshot, no change.
    let bogus = PathBuf::from("/nonexistent/workspace");
    model.dirty_handle().mark_all([bogus.clone()]);
    settle(&mut model, &clock);
    assert!(model.tree(&bogus).is_none(), "a failed read stores nothing");
    assert_eq!(agent_count(&model, &h.ws), 1, "the good snapshot is intact");
}

#[test]
fn the_full_sweep_re_derives_every_workspace() {
    let h = Harness::new();
    let (clock, mut model) = h.model();
    h.build_more("c-2", "yo");
    clock.advance(Duration::from_secs(15)); // full sweep marks everything dirty
    model.tick();
    clock.advance(Duration::from_millis(150)); // debounce elapses
    model.tick();
    assert_eq!(agent_count(&model, &h.ws), 2, "the 15 s sweep re-derived");
}

#[test]
fn the_cheap_sweep_re_probes_and_invalidates_only_live_workspaces() {
    let h = Harness::new();
    let (clock, mut model) = h.model();
    // The fixture agent is Stopped: a cheap sweep leaves it alone.
    clock.advance(super::super::CHEAP_SWEEP);
    assert!(!model.tick(), "a quiescent workspace: no targeted re-probe");
    // Inject a Live agent: the next cheap sweep invalidates its lock cache and
    // schedules a re-derive (which re-reads the real Stopped fixture).
    model.trees.insert(
        h.ws.clone(),
        GitTree {
            commits: vec![],
            agents: vec![agent("c-1", AgentState::Live)],
        },
    );
    clock.advance(super::super::CHEAP_SWEEP);
    model.tick(); // cheap sweep: invalidate_liveness + mark dirty
    clock.advance(Duration::from_millis(150));
    assert!(model.tick(), "a live agent: the cheap sweep re-derives");
    assert_eq!(agent_count(&model, &h.ws), 1, "re-read the real fixture");
}

#[test]
fn an_enumeration_root_event_reconciles_the_workspace_set() {
    let mut h = Harness::new();
    let (clock, mut model) = h.model();
    assert_eq!(model.workspaces().len(), 1);
    // A second workspace appears on disk, then the workspaces enum root fires.
    let ws2 = h.add_workspace("ws2", "d-1");
    model.dirty_handle().mark_all([h.roots.workspaces()]);
    model.tick(); // dispatch → reconcile: re-enumerate + watch + mark new dirty
    assert_eq!(
        model.workspaces().len(),
        2,
        "the new workspace is enumerated"
    );
    // Before its debounce elapses it has no snapshot → the roster counts zero.
    assert_eq!(model.workspace_stats(&ws2), (0, 0, false));
    // After the debounce it derives.
    clock.advance(Duration::from_millis(150));
    model.tick();
    assert_eq!(agent_count(&model, &ws2), 1);
}

#[test]
fn a_vanished_workspace_is_pruned_on_reconcile() {
    let mut h = Harness::new();
    let ws2 = h.add_workspace("ws2", "d-1");
    let (_c, mut model) = h.model();
    assert_eq!(
        model.workspaces().len(),
        2,
        "both enumerated at construction"
    );
    assert_eq!(agent_count(&model, &ws2), 1);
    // Remove the symlink and reconcile via the enum root.
    std::fs::remove_file(&ws2).unwrap();
    model.dirty_handle().mark_all([h.roots.workspaces()]);
    model.tick();
    assert_eq!(model.workspaces().len(), 1, "the removed workspace is gone");
    assert!(model.tree(&ws2).is_none(), "its snapshot is pruned");
}

#[test]
fn every_enum_root_and_the_state_root_are_routed() {
    let h = Harness::new();
    let (_c, mut model) = h.model();
    // One drain carrying all enum roots, the state root, and a workspace root
    // exercises each dispatch arm (adopt / reconcile ×3 / workspace debounce).
    model.dirty_handle().mark_all([
        h.roots.yog_state.clone(),
        h.roots.names(),
        h.roots.workspaces(),
        h.roots.replays(),
        h.ws.clone(),
    ]);
    assert!(
        !model.tick(),
        "no snapshot delta this tick (workspace only debounced)"
    );
    assert_eq!(model.workspaces().len(), 1, "reconcile kept the set");
}

#[test]
fn adopting_our_own_ui_json_echo_is_suppressed() {
    let h = Harness::new();
    let (_c, mut model) = h.model();
    // Pin the real workspace, flush it to ui.json, then let the state root fire.
    let key = crate::nav::ws_key(&h.ws);
    model.toggle_pin(&key);
    model.flush_ui().unwrap();
    model.dirty_handle().mark_all([h.roots.yog_state.clone()]);
    model.tick(); // adopt_ui reads our own bytes → is_echo true → skip adopt
    let bar = model.tab_bar();
    assert!(
        bar.tabs.first().is_some_and(|t| t.pinned),
        "the pin survives the echo: {bar:?}"
    );
}

#[test]
fn toolchain_probes_at_startup_and_refreshes_on_demand() {
    // §16.6 W5: the model probes the host toolchain at construction and
    // re-probes on demand through the injected seam (`OkProbe` — every driven
    // verb's probe exits 0, so every tool classifies `Ok` and permits its verbs).
    let h = Harness::new();
    let (_c, mut model) = h.model();
    for tool in [Binary::Bl, Binary::Lernie, Binary::Bz] {
        assert!(model.toolchain().permits(tool), "startup permits {tool:?}");
    }
    model.refresh_toolchain();
    assert!(model.toolchain().permits(Binary::Bz));
}