Created a unit test to ensure selector's behavior

client/state/selectors/test/should-show-launchpad-first.ts

@@ -0,0 +1,54 @@
+import config from '@automattic/calypso-config';
+import { shouldShowLaunchpadFirst } from '../should-show-launchpad-first';
+
+jest.mock( '@automattic/calypso-config', () => ( {
+	isEnabled: jest.fn(),
+} ) );
+
+describe( 'shouldShowLaunchpadFirst', () => {
+	beforeEach( () => {
+		jest.clearAllMocks();
+	} );
+
+	it( 'should return true when site was created via onboarding flow and feature flag is enabled', () => {
+		( config.isEnabled as jest.Mock ).mockReturnValue( true );
+		const site = {
+			options: {
+				site_creation_flow: 'onboarding',
+			},
+		};
+
+		expect( shouldShowLaunchpadFirst( site ) ).toBe( true );
+	} );
+
+	it( 'should return false when site was created via onboarding flow but feature flag is disabled', () => {
+		( config.isEnabled as jest.Mock ).mockReturnValue( false );
+		const site = {
+			options: {
+				site_creation_flow: 'onboarding',
+			},
+		};
+
+		expect( shouldShowLaunchpadFirst( site ) ).toBe( false );
+	} );
+
+	it( 'should return false when site was not created via onboarding flow', () => {
+		( config.isEnabled as jest.Mock ).mockReturnValue( true );
+		const site = {
+			options: {
+				site_creation_flow: 'other',
+			},
+		};
+
+		expect( shouldShowLaunchpadFirst( site ) ).toBe( false );
+	} );
+
+	it( 'should return false when site has no creation flow information', () => {
+		( config.isEnabled as jest.Mock ).mockReturnValue( true );
+		const site = {
+			options: {},
+		};
+
+		expect( shouldShowLaunchpadFirst( site ) ).toBe( false );
+	} );
+} );