txcript 0.6.0

Convert coding-agent session transcripts between harness formats.
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

#![allow(clippy::expect_used, clippy::panic, clippy::unwrap_used)]

//! Integration tests for Codex Store fidelity, `to_common` aggregation, and
//! Common codec fixpoints.

use chrono::{DateTime, Utc};
use txcript::common;
use txcript::harness::codex;
use txcript::{Codec, Common, Store, Transcript};

fn ts(s: &str) -> DateTime<Utc> {
    s.parse().unwrap()
}

/// Fixture covering image input, reasoning, shell, `apply_patch`, web search,
/// assistant text, usage, and model backfill.
fn exercise_rollout() -> String {
    [
        r#"{"timestamp":"2026-04-01T00:00:00Z","type":"turn_context","payload":{"turn_id":"turn-1","model":"gpt-5.2-codex"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:01Z","type":"response_item","payload":{"type":"message","role":"user","content":[{"type":"input_text","text":"Please inspect this image"},{"type":"input_image","image_url":"data:image/png;base64,Zm9v"}]}}"#,
        r#"{"timestamp":"2026-04-01T00:00:02Z","type":"response_item","payload":{"type":"reasoning","summary":[{"type":"summary_text","text":"Inspecting project files"}],"content":null,"encrypted_content":"secret"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:03Z","type":"response_item","payload":{"type":"function_call","name":"exec_command","arguments":"{\"cmd\":\"ls\"}","call_id":"call-shell"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:04Z","type":"event_msg","payload":{"type":"exec_command_end","call_id":"call-shell","aggregated_output":"file1\nfile2\n","stdout":"","stderr":"","exit_code":0}}"#,
        r#"{"timestamp":"2026-04-01T00:00:05Z","type":"response_item","payload":{"type":"function_call_output","call_id":"call-shell","output":"mirror output"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:06Z","type":"response_item","payload":{"type":"custom_tool_call","status":"completed","call_id":"call-patch","name":"apply_patch","input":"*** Begin Patch\n*** Update File: src/main.rs\n@@\n-old\n+new\n*** End Patch"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:07Z","type":"response_item","payload":{"type":"custom_tool_call_output","call_id":"call-patch","output":"{\"output\":\"Success. Updated the following files:\\nM src/main.rs\\n\",\"metadata\":{\"exit_code\":0,\"duration_seconds\":0.0}}"}}"#,
        r#"{"timestamp":"2026-04-01T00:00:08Z","type":"event_msg","payload":{"type":"web_search_end","call_id":"ws-1","query":"Next.js docs","action":{"type":"search","query":"Next.js docs","queries":["Next.js docs","Next.js cache docs"]}}}"#,
        r#"{"timestamp":"2026-04-01T00:00:09Z","type":"response_item","payload":{"type":"web_search_call","status":"completed","action":{"type":"search","query":"Next.js docs","queries":["Next.js docs","Next.js cache docs"]}}}"#,
        r#"{"timestamp":"2026-04-01T00:00:10Z","type":"response_item","payload":{"type":"message","role":"assistant","content":[{"type":"output_text","text":"Done."}]}}"#,
        r#"{"timestamp":"2026-04-01T00:00:11Z","type":"event_msg","payload":{"type":"token_count","info":{"last_token_usage":{"input_tokens":100,"cached_input_tokens":25,"output_tokens":40,"reasoning_output_tokens":5,"total_tokens":145}}}}"#,
        r#"{"timestamp":"2026-04-01T00:00:12Z","type":"event_msg","payload":{"type":"task_complete","turn_id":"turn-1"}}"#,
    ]
    .join("\n")
        + "\n"
}

#[test]
fn to_common_runs_the_full_aggregation() {
    let dir = tempfile::tempdir().unwrap();
    let store = codex::CodexStore::new(dir.path());
    let src = dir.path().join("rollout-x.jsonl");
    std::fs::write(&src, exercise_rollout()).unwrap();

    let msgs = codex::Codex::to_common(&store.load(&src).unwrap())
        .unwrap()
        .body;

    // The duplicate function_call_output for call-shell is deduped against the
    // canonical exec_command_end, leaving 9 messages.
    assert_eq!(msgs.len(), 9);

    // user: text + image
    assert!(
        matches!(&msgs[0].content[0], common::Block::Text { text } if text == "Please inspect this image")
    );
    assert!(matches!(&msgs[0].content[1], common::Block::Image { .. }));

    // reasoning summary -> thinking (encrypted_content dropped)
    assert!(
        matches!(&msgs[1].content[0], common::Block::Thinking { text, .. } if text == "Inspecting project files")
    );

    // exec_command -> typed Bash
    assert!(matches!(
        &msgs[2].content[0],
        common::Block::ToolUse { id, tool: common::Tool::Bash { command, .. } } if id == "call-shell" && command == "ls"
    ));
    // canonical exec result (from the event log), not the mirror fallback
    assert!(matches!(
        &msgs[3].content[0],
        common::Block::ToolResult { tool_use_id, content: common::ToolOutput::Text(t), is_error: false }
            if tool_use_id == "call-shell" && t == "file1\nfile2\n"
    ));

    // apply_patch single hunk -> typed Edit
    assert!(matches!(
        &msgs[4].content[0],
        common::Block::ToolUse { tool: common::Tool::Edit { file_path, old_string, new_string, .. }, .. }
            if file_path == "src/main.rs" && old_string == "old" && new_string == "new"
    ));
    assert!(matches!(
        &msgs[5].content[0],
        common::Block::ToolResult { tool_use_id, .. } if tool_use_id == "call-patch"
    ));

    // web-search result pairs back to the call via the action key.
    assert!(matches!(
        &msgs[6].content[0],
        common::Block::ToolResult { tool_use_id, content: common::ToolOutput::Text(t), .. }
            if tool_use_id == "ws-1" && t == "Next.js docs\nNext.js cache docs"
    ));
    assert!(matches!(
        &msgs[7].content[0],
        common::Block::ToolUse { id, tool: common::Tool::Raw { tool_name, .. } } if id == "ws-1" && tool_name == "WebSearch"
    ));

    // final assistant text, with model + usage backfilled from the turn.
    assert!(matches!(&msgs[8].content[0], common::Block::Text { text } if text == "Done."));
    assert_eq!(msgs[8].model.as_deref(), Some("gpt-5.2-codex"));
    let usage = msgs[8].usage.unwrap();
    assert_eq!(usage.input_tokens, 100);
    assert_eq!(usage.output_tokens, 40);
    assert_eq!(usage.cache_read_input_tokens, Some(25));
}

#[test]
fn legacy_shell_array_command_normalizes_to_bash() {
    let dir = tempfile::tempdir().unwrap();
    let store = codex::CodexStore::new(dir.path());
    let src = dir.path().join("rollout-y.jsonl");
    std::fs::write(
        &src,
        [
            r#"{"timestamp":"2026-04-01T00:00:00Z","type":"response_item","payload":{"type":"function_call","name":"shell","arguments":"{\"command\":[\"bash\",\"-lc\",\"ls\"],\"workdir\":\"/repo\"}","call_id":"c1"}}"#,
            r#"{"timestamp":"2026-04-01T00:00:01Z","type":"response_item","payload":{"type":"function_call_output","call_id":"c1","output":"out"}}"#,
        ]
        .join("\n"),
    )
    .unwrap();

    let msgs = codex::Codex::to_common(&store.load(&src).unwrap())
        .unwrap()
        .body;
    assert!(matches!(
        &msgs[0].content[0],
        common::Block::ToolUse { tool: common::Tool::Bash { command, workdir: Some(w), .. }, .. }
            if command == "ls" && w == "/repo"
    ));
}

#[test]
fn store_round_trip_is_lossless_on_disk() {
    let dir = tempfile::tempdir().unwrap();
    let store = codex::CodexStore::new(dir.path());
    let src = dir.path().join("rollout-z.jsonl");
    let body = format!(
        "{}\n{}\n",
        r#"{"timestamp":"2026-01-02T03:04:05.000Z","type":"session_meta","payload":{"id":"sess-1","timestamp":"2026-01-02T03:04:05.000Z","cwd":"/repo","cli_version":"0.104.0","source":"cli","originator":"codex_cli_rs","model_provider":null,"base_instructions":null,"git":{"branch":"main"}}}"#,
        r#"{"timestamp":"2026-01-02T03:04:06.000Z","type":"response_item","payload":{"type":"message","role":"user","content":[{"type":"input_text","text":"hi"}]}}"#,
    );
    std::fs::write(&src, &body).unwrap();

    let loaded = store.load(&src).unwrap();
    let saved = store.save(&loaded).unwrap();
    let reloaded = store.load(&saved.reference).unwrap();

    assert_eq!(loaded.body, reloaded.body);
    // Landed under YYYY/MM/DD with a rollout-<ts>-<id> name. Compare path
    // components, not the string — separators differ on Windows.
    let components: Vec<_> = saved
        .reference
        .components()
        .map(|c| c.as_os_str().to_string_lossy().into_owned())
        .collect();
    assert!(components.windows(3).any(|w| w == ["2026", "01", "02"]));
    assert!(saved.reference.to_string_lossy().contains("rollout-"));
    assert!(saved.reference.to_string_lossy().ends_with("sess-1.jsonl"));
}

#[test]
fn discover_extracts_metadata() {
    let dir = tempfile::tempdir().unwrap();
    let nested = dir.path().join("2026").join("01").join("02");
    std::fs::create_dir_all(&nested).unwrap();
    std::fs::write(
        nested.join("rollout-2026-01-02T03-04-05-sess-1.jsonl"),
        format!(
            "{}\n{}\n",
            r#"{"timestamp":"2026-01-02T03:04:05.000Z","type":"session_meta","payload":{"id":"sess-1","timestamp":"2026-01-02T03:04:05.000Z","cwd":"/repo","cli_version":"0.104.0","model":"gpt-5.2-codex","git":{"branch":"main"}}}"#,
            r#"{"timestamp":"2026-01-02T03:04:06.000Z","type":"response_item","payload":{"type":"message","role":"user","content":[{"type":"input_text","text":"hi"}]}}"#,
        ),
    )
    .unwrap();

    let found = codex::CodexStore::new(dir.path()).discover().unwrap();
    assert_eq!(found.len(), 1);
    let meta = &found[0].meta;
    assert_eq!(meta.id, "sess-1");
    assert_eq!(meta.cwd.as_deref(), Some("/repo"));
    assert_eq!(meta.git_branch.as_deref(), Some("main"));
    assert_eq!(meta.model.as_deref(), Some("gpt-5.2-codex"));
    assert_eq!(meta.cli_version.as_deref(), Some("0.104.0"));
}

/// Shaped at codex's granularity: each assistant block is its own message
/// (codex stores one `response_item` per line), every assistant turn carries a
/// model, only the final text turn carries usage, and `stop_reason` is None
/// (codex has no stop reason). This is exactly what `to_common` produces, so
/// `from_common`/`to_common` is a clean fixpoint.
fn sample_common() -> Transcript<Common> {
    let meta = common::Meta {
        id: "sess-1".into(),
        timestamp: ts("2026-01-02T03:04:05.000Z"),
        cwd: Some("/repo".into()),
        git_branch: Some("main".into()),
        title: None,
        cli_version: Some("0.104.0".into()),
        model: Some("gpt-5.2-codex".into()),
    };
    let model = || Some("gpt-5.2-codex".to_string());
    let body = vec![
        common::Message {
            role: common::Role::User,
            content: vec![common::Block::Text {
                text: "inspect".into(),
            }],
            timestamp: ts("2026-01-02T03:04:06.000Z"),
            model: None,
            stop_reason: None,
            usage: None,
        },
        common::Message {
            role: common::Role::Assistant,
            content: vec![common::Block::Thinking {
                text: "reasoning".into(),
                signature: None,
                encrypted: None,
            }],
            timestamp: ts("2026-01-02T03:04:07.000Z"),
            model: model(),
            stop_reason: None,
            usage: None,
        },
        common::Message {
            role: common::Role::Assistant,
            content: vec![common::Block::ToolUse {
                id: "call-x".into(),
                tool: common::Tool::Bash {
                    command: "ls".into(),
                    workdir: None,
                    timeout_ms: None,
                    description: None,
                    run_in_background: false,
                },
            }],
            timestamp: ts("2026-01-02T03:04:08.000Z"),
            model: model(),
            stop_reason: None,
            usage: None,
        },
        common::Message {
            role: common::Role::User,
            content: vec![common::Block::ToolResult {
                tool_use_id: "call-x".into(),
                content: common::ToolOutput::Text("file1\nfile2\n".into()),
                is_error: false,
            }],
            timestamp: ts("2026-01-02T03:04:09.000Z"),
            model: None,
            stop_reason: None,
            usage: None,
        },
        common::Message {
            role: common::Role::Assistant,
            content: vec![common::Block::Text {
                text: "Done.".into(),
            }],
            timestamp: ts("2026-01-02T03:04:10.000Z"),
            model: model(),
            stop_reason: None,
            usage: Some(common::Usage {
                input_tokens: 100,
                output_tokens: 40,
                cache_read_input_tokens: Some(25),
                cache_creation_input_tokens: None,
            }),
        },
    ];
    Transcript::new(meta, body)
}

#[test]
fn codec_fixpoint_through_common_loses_nothing() {
    let common = sample_common();
    let native = codex::Codex::from_common(&common).unwrap();
    let back = codex::Codex::to_common(&native).unwrap();
    assert_eq!(common, back);
}