Hmbown/CodeWhale · error

expected an opening tag, got

Error message

expected an opening tag, got {other:?}

What it means

Test-only panic in expands_a_placeholder_into_an_image_block: the first expanded block was not the expected ContentBlock::Text open tag (e.g. it came back as an ImageUrl or other variant), so the placeholder expansion produced an unexpected block ordering.

Solutions

1. Fix expand_attachment_blocks so the first block is always the textual '<image path=...>' open tag when a placeholder is expanded
2. Check the expanded.notices field for parse failures that shift blocks
3. Update the match arms if the block contract intentionally changed

When it happens

Trigger: Thrown at crates/tui/src/image_attach/tests.rs:281 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Hmbown/CodeWhale@433685b202 (2026-09-15). Data as JSON: /api/errors/2db9d3987c970027. Report an issue: GitHub.

Appendix: source

Thrown at crates/tui/src/image_attach/tests.rs:281

}

#[test]
fn expands_a_placeholder_into_an_image_block() {
    let dir = tempfile::tempdir().expect("tempdir");
    let path = write_png(dir.path(), "shot.png");
    let text = format!("look at this\n[Attached image: {}]", path.display());

    let expanded = expand_attachment_blocks(&text);

    assert!(expanded.notices.is_empty(), "{expanded:?}");
    // Bracketed: open tag naming the path, the image, close tag.
    assert_eq!(expanded.blocks.len(), 3, "{expanded:?}");
    match &expanded.blocks[0] {
        ContentBlock::Text { text, .. } => {
            assert!(text.starts_with("<image path=\""), "{text}");
            assert!(text.contains("shot.png"), "{text}");
        }
        other => panic!("expected an opening tag, got {other:?}"),
    }
    match &expanded.blocks[1] {
        ContentBlock::ImageUrl { image_url } => {
            assert!(image_url.url.starts_with("data:image/png;base64,"));
        }
        other => panic!("expected an image block, got {other:?}"),
    }
    assert_eq!(
        expanded.blocks[2],
        ContentBlock::Text {
            text: "</image>".to_string(),
            cache_control: None
        }
    );
}

#[test]
fn expands_multiple_placeholders_in_order() {

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