class StateTest

class StateTest extends UnitTestCase {
    
    /**
     * @covers ::__construct
     * @covers ::id
     * @covers ::label
     * @covers ::weight
     */
    public function testGetters() {
        $state = new State($this->prophesize(WorkflowTypeInterface::class)
            ->reveal(), 'draft', 'Draft', 3);
        $this->assertEquals('draft', $state->id());
        $this->assertEquals('Draft', $state->label());
        $this->assertEquals(3, $state->weight());
    }
    
    /**
     * @covers ::canTransitionTo
     */
    public function testCanTransitionTo() {
        $workflow_type = new TestType([], '', []);
        $workflow_type->addState('draft', 'Draft')
            ->addState('published', 'Published')
            ->addTransition('publish', 'Publish', [
            'draft',
        ], 'published');
        $state = $workflow_type->getState('draft');
        $this->assertTrue($state->canTransitionTo('published'));
        $this->assertFalse($state->canTransitionTo('some_other_state'));
        $workflow_type->deleteTransition('publish');
        $this->assertFalse($state->canTransitionTo('published'));
    }
    
    /**
     * @covers ::getTransitionTo
     */
    public function testGetTransitionTo() {
        $workflow_type = new TestType([], '', []);
        $workflow_type->addState('draft', 'Draft')
            ->addState('published', 'Published')
            ->addTransition('publish', 'Publish', [
            'draft',
        ], 'published');
        $state = $workflow_type->getState('draft');
        $transition = $state->getTransitionTo('published');
        $this->assertEquals('Publish', $transition->label());
    }
    
    /**
     * @covers ::getTransitionTo
     */
    public function testGetTransitionToException() {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage("Can not transition to 'published' state");
        $workflow_type = new TestType([], '', []);
        $workflow_type->addState('draft', 'Draft');
        $state = $workflow_type->getState('draft');
        $state->getTransitionTo('published');
    }
    
    /**
     * @covers ::getTransitions
     */
    public function testGetTransitions() {
        $workflow_type = new TestType([], '', []);
        $workflow_type->addState('draft', 'Draft')
            ->addState('published', 'Published')
            ->addState('archived', 'Archived')
            ->addTransition('create_new_draft', 'Create new draft', [
            'draft',
        ], 'draft')
            ->addTransition('publish', 'Publish', [
            'draft',
        ], 'published')
            ->addTransition('archive', 'Archive', [
            'published',
        ], 'archived');
        $state = $workflow_type->getState('draft');
        $transitions = $state->getTransitions();
        $this->assertCount(2, $transitions);
        $this->assertEquals('Create new draft', $transitions['create_new_draft']->label());
        $this->assertEquals('Publish', $transitions['publish']->label());
    }
    
    /**
     * @covers ::labelCallback
     */
    public function testLabelCallback() {
        $workflow_type = $this->prophesize(WorkflowTypeInterface::class)
            ->reveal();
        $states = [
            new State($workflow_type, 'draft', 'Draft'),
            new State($workflow_type, 'published', 'Published'),
        ];
        $this->assertEquals([
            'Draft',
            'Published',
        ], array_map([
            State::class,
            'labelCallback',
        ], $states));
    }

}