harn-vm 0.10.129

Async bytecode virtual machine for the Harn programming language
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

use super::build_compact_config;
use crate::value::VmValue;

fn call_agent_session_builtin(name: &str) -> VmValue {
    let rt = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()
        .expect("runtime");
    rt.block_on(async {
        let local = tokio::task::LocalSet::new();
        local
            .run_until(async {
                let mut vm = crate::Vm::new();
                crate::register_vm_stdlib(&mut vm);
                vm.call_named_builtin(name, Vec::new())
                    .await
                    .expect("builtin call")
            })
            .await
    })
}

fn call_current_id_builtin() -> VmValue {
    call_agent_session_builtin("agent_session_current_id")
}

#[test]
fn current_id_returns_nil_outside_active_session() {
    crate::reset_thread_local_state();
    assert!(matches!(call_current_id_builtin(), VmValue::Nil));
}

#[test]
fn current_id_returns_active_session_id() {
    crate::reset_thread_local_state();
    crate::agent_sessions::push_current_session("unit-test-session".to_string());
    let current = call_current_id_builtin();
    crate::agent_sessions::pop_current_session();
    assert!(matches!(current, VmValue::String(value) if value.as_str() == "unit-test-session"));
}

fn call_builtin_with_args(name: &str, args: Vec<VmValue>) -> VmValue {
    let rt = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()
        .expect("runtime");
    rt.block_on(async {
        let local = tokio::task::LocalSet::new();
        local
            .run_until(async {
                let mut vm = crate::Vm::new();
                crate::register_vm_stdlib(&mut vm);
                vm.call_named_builtin(name, args)
                    .await
                    .expect("builtin call")
            })
            .await
    })
}

#[test]
fn record_changed_path_builtin_attributes_to_current_session() {
    // The receipt's `files_written` drains `take_session_changed_paths`, and
    // host-side edits (which bypass the hostlib write chokepoint) must reach
    // that store through this builtin or they vanish from the receipt.
    crate::reset_thread_local_state();
    let session = "record-changed-path-session";
    crate::agent_sessions::clear_session_changed_paths(session);
    crate::agent_sessions::push_current_session(session.to_string());
    let recorded = call_builtin_with_args(
        "agent_session_record_changed_path",
        vec![VmValue::String(arcstr::ArcStr::from(
            "test/users.integration.test.ts",
        ))],
    );
    crate::agent_sessions::pop_current_session();
    assert!(matches!(recorded, VmValue::Bool(true)));
    assert_eq!(
        crate::agent_sessions::take_session_changed_paths(session),
        vec!["test/users.integration.test.ts".to_string()],
        "the builtin must record under the active session so the receipt drains it"
    );
}

#[test]
fn record_changed_path_builtin_no_session_records_nothing() {
    // Outside any active session (and with no explicit id), there is nothing
    // to attribute to: the builtin must be a no-op returning false, never
    // recording under an empty key.
    crate::reset_thread_local_state();
    let recorded = call_builtin_with_args(
        "agent_session_record_changed_path",
        vec![VmValue::String(arcstr::ArcStr::from("test/orphan.ts"))],
    );
    assert!(matches!(recorded, VmValue::Bool(false)));
    assert!(crate::agent_sessions::take_session_changed_paths("").is_empty());
}

#[test]
fn record_changed_path_builtin_honors_explicit_session_argument() {
    crate::reset_thread_local_state();
    let session = "record-changed-path-explicit";
    crate::agent_sessions::clear_session_changed_paths(session);
    let recorded = call_builtin_with_args(
        "agent_session_record_changed_path",
        vec![
            VmValue::String(arcstr::ArcStr::from("src/orders.ts")),
            VmValue::String(arcstr::ArcStr::from(session)),
        ],
    );
    assert!(matches!(recorded, VmValue::Bool(true)));
    assert_eq!(
        crate::agent_sessions::take_session_changed_paths(session),
        vec!["src/orders.ts".to_string()]
    );
}

#[test]
fn actor_chain_returns_current_session_chain() {
    crate::reset_thread_local_state();
    let chain = crate::ActorChain::new("user:kenneth").pushed("agent:root");
    let id = crate::agent_sessions::open_or_create_with_actor_chain_for_test(
        Some("actor-chain-current".to_string()),
        Some(chain.clone()),
    );
    crate::agent_sessions::push_current_session(id);
    let current = call_agent_session_builtin("agent_session_actor_chain");
    crate::agent_sessions::pop_current_session();
    assert_eq!(
        crate::llm::helpers::vm_value_to_json(&current),
        chain.to_json_value()
    );
}

#[test]
fn compact_config_rejects_negative_numeric_options() {
    for key in [
        "keep_last",
        "token_threshold",
        "tool_output_max_chars",
        "hard_limit_tokens",
    ] {
        let mut opts = crate::value::DictMap::new();
        opts.insert(crate::value::intern_key(key), VmValue::Int(-1));
        let err = build_compact_config(&opts).expect_err("negative option must fail");
        assert!(err.to_string().contains(key), "{err}");
    }
}