Initial commit

brittle-core/tests/end_to_end.rs

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+/// End-to-end integration test using a real Brittle<FsStore> repository.
+///
+/// Exercises the full workflow: create repo, add references with authors,
+/// organize in libraries, export BibTeX, create a snapshot, modify state,
+/// restore the snapshot, and verify everything reverted correctly.
+use brittle_core::{
+    AnnotationType, Brittle, BrittleError, Color, EntryType, Person, TextMarkupType,
+    ValidationError,
+};
+
+#[test]
+fn full_workflow() {
+    let tmp = tempfile::tempdir().unwrap();
+    let mut db = Brittle::create(tmp.path()).unwrap();
+
+    // ---- Create references ----
+    let mut turing = db
+        .create_reference("turing1950", EntryType::Article)
+        .unwrap();
+    turing.authors.push(Person {
+        family: "Turing".into(),
+        given: Some("Alan M.".into()),
+        prefix: None,
+        suffix: None,
+    });
+    turing.fields.insert(
+        "title".into(),
+        "Computing Machinery and Intelligence".into(),
+    );
+    turing.fields.insert("journal".into(), "Mind".into());
+    turing.fields.insert("year".into(), "1950".into());
+    let turing = db.update_reference(turing).unwrap();
+
+    let mut knuth = db.create_reference("knuth1984", EntryType::Book).unwrap();
+    knuth.authors.push(Person::new("Knuth"));
+    knuth.fields.insert("title".into(), "The TeXbook".into());
+    knuth
+        .fields
+        .insert("publisher".into(), "Addison-Wesley".into());
+    knuth.fields.insert("year".into(), "1984".into());
+    let knuth = db.update_reference(knuth).unwrap();
+
+    // ---- Organize in libraries ----
+    let cs = db.create_library("Computer Science", None).unwrap();
+    let ai = db.create_library("AI", Some(cs.id)).unwrap();
+
+    db.add_to_library(cs.id, turing.id).unwrap();
+    db.add_to_library(ai.id, turing.id).unwrap(); // multi-membership
+    db.add_to_library(cs.id, knuth.id).unwrap();
+
+    // Both references are in CS.
+    let cs_refs = db.list_library_references(cs.id).unwrap();
+    assert_eq!(cs_refs.len(), 2);
+
+    // Turing is in both CS and AI.
+    let turing_libs = db.list_reference_libraries(turing.id).unwrap();
+    assert_eq!(turing_libs.len(), 2);
+
+    // ---- BibTeX export ----
+    let (bibtex, errors) = db.export_library_bibtex(cs.id).unwrap();
+    assert!(errors.is_empty(), "unexpected BibTeX errors: {errors:?}");
+    assert!(bibtex.contains("@article{turing1950,"));
+    assert!(bibtex.contains("Turing, Alan M."));
+    assert!(bibtex.contains("Computing Machinery and Intelligence"));
+    assert!(bibtex.contains("@book{knuth1984,"));
+
+    // ---- Annotations ----
+    let ann = db
+        .create_annotation(
+            turing.id,
+            0,
+            AnnotationType::TextMarkup {
+                markup_type: TextMarkupType::Highlight,
+                quads: vec![],
+                color: Color::YELLOW,
+                selected_text: Some("The Imitation Game".into()),
+            },
+            Some("Key concept".into()),
+        )
+        .unwrap();
+
+    let annotations = db.get_annotations(turing.id).unwrap();
+    assert_eq!(annotations.len(), 1);
+    assert_eq!(annotations[0].content.as_deref(), Some("Key concept"));
+
+    // ---- Snapshot ----
+    let snap = db
+        .create_snapshot("Baseline with Turing and Knuth")
+        .unwrap();
+    assert!(!snap.id.is_empty());
+
+    let snapshots = db.list_snapshots().unwrap();
+    // At least our named snapshot + the initial "Initialize Brittle repository" commit.
+    assert!(snapshots.len() >= 2);
+    assert!(
+        snapshots
+            .iter()
+            .any(|s| s.message == "Baseline with Turing and Knuth")
+    );
+
+    // ---- Modify state after snapshot ----
+    db.delete_reference(knuth.id).unwrap();
+    assert!(db.get_reference(knuth.id).is_err());
+
+    let cs_refs_after = db.list_library_references(cs.id).unwrap();
+    assert_eq!(
+        cs_refs_after.len(),
+        1,
+        "Knuth should have been removed from library"
+    );
+
+    // ---- Restore snapshot ----
+    // The knuth deletion is written to disk but not committed — verify this.
+    assert!(db.has_uncommitted_changes().unwrap());
+
+    // restore_snapshot errors on uncommitted changes; use discard_changes instead.
+    db.discard_changes().unwrap();
+
+    // After restore, Knuth should be back.
+    let knuth_restored = db.get_reference(knuth.id).unwrap();
+    assert_eq!(knuth_restored.cite_key, "knuth1984");
+
+    // CS library should have 2 members again.
+    let cs_refs_restored = db.list_library_references(cs.id).unwrap();
+    assert_eq!(cs_refs_restored.len(), 2);
+
+    // Inspect git log to verify history is human-readable.
+    let snapshots_after = db.list_snapshots().unwrap();
+    assert!(!snapshots_after.is_empty());
+}
+
+#[test]
+fn get_pdf_path_returns_error_when_no_pdf_attached() {
+    let tmp = tempfile::tempdir().unwrap();
+    let mut db = Brittle::create(tmp.path()).unwrap();
+    let r = db.create_reference("nopdf2024", EntryType::Misc).unwrap();
+
+    let err = db.get_pdf_path(r.id).unwrap_err();
+    assert!(
+        matches!(
+            err,
+            BrittleError::Validation(ValidationError::NoPdfAttached { .. })
+        ),
+        "expected NoPdfAttached, got {err}"
+    );
+}
+
+#[test]
+fn get_pdf_path_returns_path_after_attach() {
+    let tmp = tempfile::tempdir().unwrap();
+    let mut db = Brittle::create(tmp.path()).unwrap();
+    let r = db.create_reference("withpdf2024", EntryType::Misc).unwrap();
+
+    // Write a dummy PDF file.
+    let source = tmp.path().join("dummy.pdf");
+    std::fs::write(&source, b"%PDF-1.4 dummy").unwrap();
+
+    db.attach_pdf(r.id, &source).unwrap();
+
+    let path = db.get_pdf_path(r.id).unwrap();
+    assert!(path.exists(), "PDF path {path:?} should exist on disk");
+    assert_eq!(path.extension().and_then(|e| e.to_str()), Some("pdf"));
+}