More robust implementation for `CustomAnimationBuilder` with `delay` #177

	name: Tests

	on: [push]

	jobs:
	tests:
	name: Unit tests
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-java@v1
	with:
	java-version: '12.x'
	- uses: subosito/flutter-action@v1
	with:
	channel: 'stable'

	# simple_animations
	- name: simple_animations / Remove example
	run: rm -rf example/
	working-directory: .

	- name: simple_animations / Get dependencies
	run: flutter pub get
	working-directory: .

	- name: simple_animations / Run tests
	run: flutter test
	working-directory: .

Provide feedback