Release MIDI Tools 0.2.0

tests/core/midi-task.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, it } from "vitest";
+import { executeMidiTask } from "../../src/core/midi-task";
+import { encodeMidi, noteSpans, type MidiDocument } from "../../src/core/midi";
+
+const document: MidiDocument = {
+  name: "worker.mid",
+  format: 0,
+  division: 480,
+  warnings: [],
+  tracks: [
+    {
+      name: "Notes",
+      events: [
+        {
+          kind: "channel",
+          tick: 0,
+          order: 0,
+          status: 9,
+          channel: 0,
+          data: Uint8Array.of(60, 100),
+        },
+        {
+          kind: "channel",
+          tick: 480,
+          order: 1,
+          status: 8,
+          channel: 0,
+          data: Uint8Array.of(60, 0),
+        },
+      ],
+    },
+  ],
+};
+
+describe("MIDI worker task protocol", () => {
+  it("parses, transforms and exports without UI state", () => {
+    const encoded = encodeMidi(document);
+    const parsed = executeMidiTask({
+      kind: "parse",
+      name: "worker.mid",
+      bytes: Uint8Array.from(encoded).buffer,
+    });
+    expect(parsed.kind).toBe("document");
+    if (parsed.kind !== "document") return;
+    const transformed = executeMidiTask({
+      kind: "operation",
+      document: parsed.document,
+      operation: { kind: "transpose", semitones: 12 },
+    });
+    expect(transformed.kind).toBe("document");
+    if (transformed.kind !== "document") return;
+    expect(noteSpans(transformed.document)[0]?.note).toBe(72);
+    const edited = executeMidiTask({
+      kind: "operation",
+      document: transformed.document,
+      operation: {
+        kind: "edit-note",
+        onOrder: noteSpans(transformed.document)[0]!.onOrder,
+        note: 70,
+        velocity: 80,
+        startTick: 10,
+        endTick: 240,
+      },
+    });
+    expect(edited.kind).toBe("document");
+    if (edited.kind !== "document") return;
+    expect(noteSpans(edited.document)[0]).toMatchObject({
+      note: 70,
+      velocity: 80,
+      startTick: 10,
+      endTick: 240,
+    });
+    expect(
+      executeMidiTask({
+        kind: "export",
+        document: edited.document,
+        format: "csv",
+      }).kind,
+    ).toBe("text");
+  });
+});