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test/card_stripe_layout_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+/// The accent stripe on the Bookings stop card is a `Container` with a width
+/// and no height, laid out by `Row(crossAxisAlignment: stretch)`. That idiom is
+/// a trap inside a `ListView`: stretch sizes children to the Row's own
+/// cross-axis extent, which in a scrollable is UNBOUNDED, so the stripe is
+/// asked to be infinitely tall and the entire card fails to lay out.
+///
+/// It fails silently in the worst possible way — the progress rail above the
+/// list is a separate widget reading the same data, so it kept showing the
+/// right stop count while every card rendered as nothing. That looked exactly
+/// like "the bookings data is broken", and three rounds of data fixes chased
+/// it before the layout was suspected.
+///
+/// PickupCard itself is private to the `pickups.dart` library and cannot be
+/// imported, so these tests pin the idiom rather than the widget.
+void main() {
+  Widget inList(Widget child) => MaterialApp(
+        home: Scaffold(
+          body: ListView(children: [child]),
+        ),
+      );
+
+  Widget stripeRow({required bool withIntrinsicHeight}) {
+    final row = Row(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        Container(width: 4, color: const Color(0xFF960019)),
+        const Expanded(
+          child: Padding(
+            padding: EdgeInsets.all(12),
+            child: Text('Sri Balaji Stores\n19, Thadagam Road'),
+          ),
+        ),
+      ],
+    );
+    return Container(
+      margin: const EdgeInsets.all(8),
+      child: ClipRRect(
+        borderRadius: BorderRadius.circular(15),
+        child: withIntrinsicHeight ? IntrinsicHeight(child: row) : row,
+      ),
+    );
+  }
+
+  testWidgets('a stretch Row with a height-less child breaks in a ListView',
+      (tester) async {
+    await tester.pumpWidget(inList(stripeRow(withIntrinsicHeight: false)));
+    expect(tester.takeException(), isNotNull,
+        reason: 'this is the shape that made every stop card disappear');
+  });
+
+  testWidgets('IntrinsicHeight gives stretch something finite to stretch to',
+      (tester) async {
+    await tester.pumpWidget(inList(stripeRow(withIntrinsicHeight: true)));
+    expect(tester.takeException(), isNull);
+
+    // And the card has real height — an invisible zero-height card would pass
+    // an exception check while still showing the rider nothing.
+    final size = tester.getSize(find.byType(IntrinsicHeight));
+    expect(size.height, greaterThan(20));
+
+    // The stripe spans the full card height rather than collapsing.
+    final stripe = tester.getSize(
+      find.descendant(
+        of: find.byType(IntrinsicHeight),
+        matching: find.byType(Container),
+      ).first,
+    );
+    expect(stripe.height, size.height);
+    expect(stripe.width, 4);
+  });
+}