Yarn workspaces

Summary:
1) moved "sonar/desktop/src" to "sonar/desktop/app/src", so "app" is now a separate package containing the core Flipper app code
2) Configured yarn workspaces with the root in "sonar/desktop": app, static, pkg, doctor, headless-tests. Plugins are not included for now, I plan to do this later.

Reviewed By: jknoxville

Differential Revision: D20535782

fbshipit-source-id: 600b2301960f37c7d72166e0d04eba462bec9fc1

desktop/app/src/chrome/__tests__/ChangelogSheet.node.tsx

@@ -0,0 +1,93 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {
+  hasNewChangesToShow,
+  getRecentChangelog,
+  markChangelogRead,
+} from '../ChangelogSheet';
+
+class StubStorage {
+  data: Record<string, string> = {};
+
+  setItem(key: string, value: string) {
+    this.data[key] = value;
+  }
+
+  getItem(key: string) {
+    return this.data[key];
+  }
+}
+
+const changelog = `
+
+# Version 2.0
+
+* Nice feature one
+* Important fix
+
+# Version 1.0
+
+* Not very exciting actually
+
+`;
+
+describe('ChangelogSheet', () => {
+  let storage!: Storage;
+
+  beforeEach(() => {
+    storage = new StubStorage() as any;
+  });
+
+  test('without storage, should show changes', () => {
+    expect(hasNewChangesToShow(undefined, changelog)).toBe(false);
+    expect(getRecentChangelog(storage, changelog)).toEqual(changelog.trim());
+    expect(hasNewChangesToShow(storage, changelog)).toBe(true);
+  });
+
+  test('with last header, should not show changes', () => {
+    markChangelogRead(storage, changelog);
+    expect(storage.data).toMatchInlineSnapshot(`
+      Object {
+        "FlipperChangelogStatus": "{\\"lastHeader\\":\\"# Version 2.0\\"}",
+      }
+    `);
+    expect(hasNewChangesToShow(storage, changelog)).toBe(false);
+
+    const newChangelog = `
+# Version 3.0
+
+* Cool!
+
+# Version 2.5
+
+* This is visible as well
+
+${changelog}
+`;
+
+    expect(hasNewChangesToShow(storage, newChangelog)).toBe(true);
+    expect(getRecentChangelog(storage, newChangelog)).toMatchInlineSnapshot(`
+"# Version 3.0
+
+* Cool!
+
+# Version 2.5
+
+* This is visible as well"
+`);
+    markChangelogRead(storage, newChangelog);
+    expect(storage.data).toMatchInlineSnapshot(`
+      Object {
+        "FlipperChangelogStatus": "{\\"lastHeader\\":\\"# Version 3.0\\"}",
+      }
+    `);
+    expect(hasNewChangesToShow(storage, newChangelog)).toBe(false);
+  });
+});