smartdata 0.0.1

SmartData provides a way to automatically generate random testdata generators

example/example.md

Automatically generate your generators

Create your beans.

class Dog {
    final String breed;
    final int age;
    final String name;
    Dog(this.breed, this.age, this.name);
}

To generate a Datagenerator for this bean, you need to initialize it.

// dog_test.dart
@SmartdataInit(forClasses: [Dog])
void init() {
  $init();
}

Once you ran the generator, next to your dog_test.dart a dog_test.smart.dart will be generated.

dart run build_runner build

// dog_test.smart.dart
class DogGenerator extends Generator {
  @override
  Simple generateRandom() {
    final dog = Dog(
        Smartdata.I.getSingle<String>(),
        Smartdata.I.getSingle<int>(),
        Smartdata.I.getSingle<String>()
    );
    return dog;
  }
}

$init() {
  Smartdata.put(Dog, DogGenerator());
}

The Generator supports positional arguments, named arguments and property access via implicit and explicit setters.

The generated Class can then be used in your tests.

@SmartdataInit(forClasses: [Dog])
void init() {
  $init();
}

void main() {
  setUp(init); // make sure to call the init, to initialize the generator map
  test('should create lots of random dogs', () {
    final testData = Smartdata.I.get<Dog>(50);
    expect(testData.length, 50);
  });
}

Manually create your generator

For flexibility or other reasons you can create your own generator. Just implement the included Generator class, and add an instance to the Smartdata singleton.

class CustomDogGenerator extends Generator<Dog> {
  Dog generateRandom() {
    return Dog('German Shepherd', 1, 'Donald'); // completely random
  }
}

void init() {
  // $init() in case you also want to initialize your automatically generated generators
  Smartdata.put(Dog, CustomDogGenerator());
}

And make sure to call init before running the test.

void main() {
  setUp(init); // make sure to call the init, to initialize the generator map
  test('should create lots of custom random dogs', () {
    final testData = Smartdata.I.get<Dog>(50);
    expect(testData.length, 50);
  });
}