Implement snapshot version history

2026-09-13 14:28:43 +02:00
parent e28d45ae18
commit 8bdebc5c24
3 changed files with 50 additions and 1 deletions
@@ -89,6 +89,36 @@ final class SongProjectModelTests: XCTestCase {
        XCTAssertEqual(version.snapshot.instruments, project.instruments)
    }

+    func testVersionHistoryStoresIndependentSnapshots() {
+        var project = SongProject(
+            id: "versioned-project",
+            title: "First Title",
+            idea: "Original idea",
+            genres: [GenreStyle(id: "folk", name: "Folk")]
+        )
+        let createdAt = Date(timeIntervalSince1970: 500)
+
+        let version = project.createVersion(
+            id: "version-1",
+            label: "Initial snapshot",
+            createdAt: createdAt
+        )
+
+        project.title = "Changed Title"
+        project.idea = "Changed idea"
+        project.selectGenreStyle(GenreStyle(id: "electronic", name: "Electronic"))
+
+        XCTAssertEqual(project.versions.count, 1)
+        XCTAssertEqual(project.version(id: "version-1"), version)
+        XCTAssertEqual(project.versions.first?.label, "Initial snapshot")
+        XCTAssertEqual(project.versions.first?.createdAt, createdAt)
+        XCTAssertEqual(project.versions.first?.snapshot.title, "First Title")
+        XCTAssertEqual(project.versions.first?.snapshot.idea, "Original idea")
+        XCTAssertEqual(project.versions.first?.snapshot.genres, [GenreStyle(id: "folk", name: "Folk")])
+        XCTAssertEqual(project.title, "Changed Title")
+        XCTAssertEqual(project.genres.map(\.id), ["folk", "electronic"])
+    }
+
    func testGenreStylesAreModeledAsMultiSelect() {
        let arabicPop = GenreStyle(id: "arabic-pop", name: "Arabic Pop")
        let synthwave = GenreStyle(id: "synthwave", name: "Synthwave")