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test/trip_empty_state_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:miler/views/Dashboard/home/trip_empty_state.dart';
+
+/// An unfilled trip tab used to render a bordered white card with a grey
+/// glyph in it — a piece of content that had arrived empty. It is the page
+/// itself now, so the assertion that matters is that no card comes back: a
+/// `Container` with a `Border` around the whole state is the thing being
+/// removed, and a redesign that quietly reintroduces one should fail here.
+void main() {
+  Future<void> pump(
+    WidgetTester tester, {
+    required bool offline,
+    VoidCallback? onGoOnDuty,
+  }) async {
+    tester.view.physicalSize = const Size(1170, 2532);
+    tester.view.devicePixelRatio = 3.0;
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+
+    await tester.pumpWidget(
+      ScreenUtilInit(
+        designSize: const Size(390, 844),
+        builder: (_, _) => MaterialApp(
+          home: Scaffold(
+            body: TripEmptyState(
+              tripLabel: 'Trip 2',
+              offline: offline,
+              onGoOnDuty: onGoOnDuty,
+            ),
+          ),
+        ),
+      ),
+    );
+    // Not `pumpAndSettle`: the halo breathes on a repeating controller, so
+    // there is deliberately no steady state to settle into.
+    await tester.pump(const Duration(milliseconds: 300));
+  }
+
+  /// Any decoration carrying a border, anywhere in the state.
+  Finder borderedBoxes() => find.byWidgetPredicate((w) {
+    if (w is! Container) return false;
+    final d = w.decoration;
+    return d is BoxDecoration && d.border != null;
+  });
+
+  testWidgets('names the trip the tabs name, and draws no card', (
+    tester,
+  ) async {
+    await pump(tester, offline: false);
+
+    expect(find.text('Trip 2 not assigned yet'), findsOneWidget);
+    expect(borderedBoxes(), findsNothing);
+  });
+
+  testWidgets('says the app is still waiting rather than offering nothing', (
+    tester,
+  ) async {
+    await pump(tester, offline: false);
+    expect(find.text('Waiting for your hub'), findsOneWidget);
+  });
+
+  testWidgets('off duty is a different sentence with the action that fixes it', (
+    tester,
+  ) async {
+    var tapped = false;
+    await pump(tester, offline: true, onGoOnDuty: () => tapped = true);
+
+    expect(find.text('You are off duty'), findsOneWidget);
+    // Nothing is coming until he goes on duty, so the wait is not claimed.
+    expect(find.text('Waiting for your hub'), findsNothing);
+
+    await tester.tap(find.text('Go on duty'));
+    await tester.pump();
+    expect(tapped, isTrue);
+  });
+}