expectProgress method
Asserts that the SwipeActionCell progress ratio is near expected.
Implementation
void expectProgress(Finder finder, double expected,
{double tolerance = 0.01}) {
final state = this.state<SwipeActionCellState>(finder);
final actual = state.currentSwipeRatio;
final delta = (actual - expected).abs();
expect(delta <= tolerance.abs(), isTrue,
reason: 'Expected progress $expected ± $tolerance '
'but found $actual (delta: $delta)');
}