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void main() {
  group('Home Page ', () {
    testWidgets('shows all the planets', (WidgetTester tester) async {
      await tester.pumpWidget(new MaterialApp(home: new HomePage()));
      await tester.pump(); // <---- Add

      for (Planet planet in planets.sublist(0, 3)) {
        expect(find.text(planet.name), findsOneWidget);
      }
      await tester.drag(find.byType(CustomScrollView), new Offset(0.0, -312.0));
      await tester.pump();
      expect(find.text(planets[4].name), findsOneWidget);
    });

    testWidgets('goes to detail page when tapping a planet', (WidgetTester tester) async {
      HttpOverrides.global = TestHttpOverrides();
      await tester.pumpWidget(new MaterialApp(home: new HomePage()));
      await tester.pump(); // <---- Add

      await tester.tap(find.text(planets[0].name));
      await tester.pumpAndSettle();

      expect(find.text("OVERVIEW"), findsOneWidget);
    });
  });
}