//! Every `.improv` document this repository ships must load (improvise-odbc).
//! Why a DIRECTORY WALK and not a list: `context/test-evidence/tui.md`.

use std::path::{Path, PathBuf};

fn shipped_documents() -> Vec<PathBuf> {
    let root = Path::new(env!("CARGO_MANIFEST_DIR"));
    let mut found: Vec<PathBuf> = ["examples", "web"]
        .iter()
        .flat_map(|dir| std::fs::read_dir(root.join(dir)).expect("a shipped-document directory"))
        .map(|entry| entry.expect("a readable directory entry").path())
        // `extension()` of `x.improv.gz` is `gz`, so matching on the extension
        // alone would skip it and put back the hole this test closes.
        .filter(|p| {
            p.to_str()
                .is_some_and(|s| s.ends_with(".improv") || s.ends_with(".improv.gz"))
        })
        .collect();
    found.sort();
    found
}

#[test]
fn every_shipped_document_loads() {
    let documents = shipped_documents();
    assert!(
        documents.len() >= 2,
        "precondition: the walk must find the documents that exist, got {documents:?}"
    );

    for path in documents {
        let workbook = improvise::persistence::load(&path)
            .unwrap_or_else(|e| panic!("{} does not load: {e}", path.display()));
        assert!(
            workbook.views.contains_key(&workbook.active_view),
            "{} loads but its initial view {:?} is not one of {:?}",
            path.display(),
            workbook.active_view,
            workbook.views.keys().collect::<Vec<_>>()
        );
    }
}