assertLadderResult function

void assertLadderResult(Object? actual, Map<String, dynamic> fixture)

Asserts that actual matches the expected value in fixture.

Supports three fixture keys:

• expectedContains — asserts actual.toString() contains the string.
• expectedSorted — sorts both sides before JSON comparison.
• expected — exact JSON equality.

Implementation

void assertLadderResult(Object? actual, Map<String, dynamic> fixture) {
  final expectedContains = fixture['expectedContains'] as String?;
  if (expectedContains != null) {
    expect(
      actual.toString(),
      contains(expectedContains),
      reason: 'Fixture #${fixture['id']}: expected value to contain '
          '"$expectedContains", got: "$actual"',
    );

    return;
  }

  var expected = fixture['expected'];
  final expectedSorted = fixture['expectedSorted'] as bool? ?? false;

  var sortedActual = actual;
  if (expectedSorted) {
    if (actual is List) {
      sortedActual = [...actual]..sort((a, b) => '$a'.compareTo('$b'));
    }
    if (expected is List) {
      expected = [...expected]..sort((a, b) => '$a'.compareTo('$b'));
    }
  }

  expect(
    jsonEncode(sortedActual),
    jsonEncode(expected),
    reason: 'Fixture #${fixture['id']}: '
        'expected ${jsonEncode(expected)}, '
        'got ${jsonEncode(sortedActual)}',
  );
}