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overhaul tests

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This commit is contained in:
Tommy Chow 2026-02-07 00:51:22 -08:00
parent e58c9875e0
commit baebafea59
22 changed files with 2637 additions and 52 deletions
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45
test/utils_test.dart
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@ -1,3 +1,5 @@
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:frosty/utils.dart';
@ -290,5 +292,48 @@ void main() {
);
}
});
testWidgets('adjusted color meets WCAG AA 4.5:1 contrast ratio',
(tester) async {
late Color adjustedColor;
const darkBackground = Color(0xFF121212);
const darkBlue = Color(0xFF0000AA);
await tester.pumpWidget(
MaterialApp(
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: darkBackground,
),
home: Scaffold(
body: Builder(
builder: (context) {
adjustedColor = adjustChatNameColor(context, darkBlue);
return const SizedBox();
},
),
),
),
);
// Compute WCAG contrast ratio manually
double linearize(double c) => c <= 0.03928
? c / 12.92
: math.pow((c + 0.055) / 1.055, 2.4).toDouble();
double luminance(Color c) {
return 0.2126 * linearize(c.r) +
0.7152 * linearize(c.g) +
0.0722 * linearize(c.b);
}
final l1 = luminance(adjustedColor);
final l2 = luminance(darkBackground);
final hi = l1 > l2 ? l1 : l2;
final lo = l1 > l2 ? l2 : l1;
final ratio = (hi + 0.05) / (lo + 0.05);
expect(ratio, greaterThanOrEqualTo(4.5),
reason: 'Adjusted color should meet WCAG AA 4.5:1 contrast ratio');
});
});
}