strop-engine 0.22.0

strop editor engine: documents, grammar dispatch, services, sessions — no terminal
Documentation 
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use super::*;

/// Opens, surfaces, and closes never panic and keep the document
/// set honest (pre-0.4.1 this pinned the parallel-vectors alignment;
/// the Document struct made that invariant the type system).
#[test]
fn document_set_stays_honest() {
    let dir = tempfile::tempdir().unwrap();
    let a = dir.path().join("align-a.rs");
    let b = dir.path().join("align-b.rs");
    std::fs::write(&a, "a\n").unwrap();
    std::fs::write(&b, "b\n").unwrap();
    let mut e = Editor::new(Buffer::open(a.to_str().unwrap()).unwrap());
    e.open_fixture(&b).unwrap();
    assert_eq!(e.docs.len(), 2);
    e.fixture_git_context();
    e.open_delta(
        "delta",
        crate::editor::git_memory::PreparedDiff::new("f.rs".into(), vec![]),
        None,
        None,
    );
    assert_eq!(e.docs.len(), 3);
    assert!(e.cur().surface_payload().is_some());
    e.close_buffer(true);
    assert_eq!(e.docs.len(), 2);
    e.close_buffer(true);
    e.close_buffer(true);
    assert!(e.should_quit, "closing the last document quits");
}

#[test]
fn qa_quits_everything_and_refuses_dirty_buffers() {
    let dir = tempfile::tempdir().unwrap();
    let a = dir.path().join("qa-a.rs");
    let b = dir.path().join("qa-b.rs");
    std::fs::write(&a, "a\n").unwrap();
    std::fs::write(&b, "b\n").unwrap();
    let mut e = Editor::new(Buffer::open(a.to_str().unwrap()).unwrap());
    e.open_fixture(&b).unwrap();
    e.feed_text("x"); // dirty the current buffer
    e.feed_text(":qa\r");
    assert!(!e.should_quit, "dirty buffer refuses");
    assert!(e.message.contains("unsaved"), "{}", e.message);
    e.feed_text(":qa!\r");
    assert!(e.should_quit, "forced quit-all quits");
    assert_eq!(e.docs.len(), 0);
}