Refactor views to support dynamic updates.

tests/card-controller/view/modifiers/substream-select.test.ts

@@ -0,0 +1,19 @@
+import { expect, it } from 'vitest';
+import { SubstreamSelectViewModifier } from '../../../../src/card-controller/view/modifiers/substream-select';
+import { getStreamCameraID, hasSubstream } from '../../../../src/utils/substream';
+import { createView } from '../../../test-utils';
+
+it('should select substream', () => {
+  const view = createView({
+    view: 'live',
+    camera: 'camera.office',
+  });
+
+  expect(hasSubstream(view)).toBe(false);
+
+  const modifier = new SubstreamSelectViewModifier('substream');
+  modifier.modify(view);
+
+  expect(hasSubstream(view)).toBe(true);
+  expect(getStreamCameraID(view)).toBe('substream');
+});