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Added /App/Support/Collection and unit test
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‎.phpunit.result.cache

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C:37:"PHPUnit\Runner\DefaultTestResultCache":1182:{a:2:{s:7:"defects";a:9:{s:7:"Warning";i:6;s:33:"SampleTest::testTrueAssertsToTrue";i:3;s:38:"UserTest::testThatWeCanGetTheFirstName";i:3;s:37:"UserTest::testThatWeCanGetTheLastName";i:4;s:36:"UserTest::testThatFullNameIsReturned";i:4;s:40:"UserTest::testFirstAndLastNameAreTrimmed";i:3;s:34:"UserTest::testEmailAddressCanBeSet";i:4;s:48:"UserTest::testEmailVariablesContainCorrectValues";i:4;s:40:"UserTest::that_we_can_get_the_first_name";i:3;}s:5:"times";a:14:{s:7:"Warning";d:0.607;s:33:"SampleTest::testTrueAssertsToTrue";d:0.005;s:38:"UserTest::testThatWeCanGetTheFirstName";d:0.001;s:37:"UserTest::testThatWeCanGetTheLastName";d:0;s:36:"UserTest::testThatFullNameIsReturned";d:0;s:40:"UserTest::testFirstAndLastNameAreTrimmed";d:0;s:34:"UserTest::testEmailAddressCanBeSet";d:0;s:48:"UserTest::testEmailVariablesContainCorrectValues";d:0.001;s:40:"UserTest::that_we_can_get_the_first_name";d:0.004;s:39:"UserTest::that_we_can_get_the_last_name";d:0;s:36:"UserTest::that_full_name_is_returned";d:0;s:46:"UserTest::that_first_and_last_name_are_trimmed";d:0;s:39:"UserTest::that_email_address_can_be_set";d:0;s:53:"UserTest::that_email_variables_contain_correct_values";d:0.001;}}}
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C:37:"PHPUnit\Runner\DefaultTestResultCache":2367:{a:2:{s:7:"defects";a:18:{s:7:"Warning";i:6;s:33:"SampleTest::testTrueAssertsToTrue";i:3;s:38:"UserTest::testThatWeCanGetTheFirstName";i:3;s:37:"UserTest::testThatWeCanGetTheLastName";i:4;s:36:"UserTest::testThatFullNameIsReturned";i:4;s:40:"UserTest::testFirstAndLastNameAreTrimmed";i:3;s:34:"UserTest::testEmailAddressCanBeSet";i:4;s:48:"UserTest::testEmailVariablesContainCorrectValues";i:4;s:40:"UserTest::that_we_can_get_the_first_name";i:3;s:62:"CollectionTest::empty_instantiated_collection_returns_no_items";i:4;s:52:"CollectionTest::count_is_correct_for_items_passed_in";i:3;s:52:"CollectionTest::items_returned_match_items_passed_in";i:4;s:60:"CollectionTest::collection_is_instance_of_iterator_aggregate";i:3;s:42:"CollectionTest::collection_can_be_iterated";i:4;s:64:"CollectionTest::collection_can_be_merged_with_another_collection";i:4;s:46:"CollectionTest::can_add_to_existing_collection";i:4;s:42:"CollectionTest::returns_json_encoded_items";i:6;s:62:"CollectionTest::json_encoding_a_collection_object_returns_json";i:3;}s:5:"times";a:23:{s:7:"Warning";d:0.607;s:33:"SampleTest::testTrueAssertsToTrue";d:0;s:38:"UserTest::testThatWeCanGetTheFirstName";d:0.001;s:37:"UserTest::testThatWeCanGetTheLastName";d:0;s:36:"UserTest::testThatFullNameIsReturned";d:0;s:40:"UserTest::testFirstAndLastNameAreTrimmed";d:0;s:34:"UserTest::testEmailAddressCanBeSet";d:0;s:48:"UserTest::testEmailVariablesContainCorrectValues";d:0.001;s:40:"UserTest::that_we_can_get_the_first_name";d:0;s:39:"UserTest::that_we_can_get_the_last_name";d:0;s:36:"UserTest::that_full_name_is_returned";d:0;s:46:"UserTest::that_first_and_last_name_are_trimmed";d:0;s:39:"UserTest::that_email_address_can_be_set";d:0;s:53:"UserTest::that_email_variables_contain_correct_values";d:0;s:62:"CollectionTest::empty_instantiated_collection_returns_no_items";d:0.012;s:52:"CollectionTest::count_is_correct_for_items_passed_in";d:0.001;s:52:"CollectionTest::items_returned_match_items_passed_in";d:0.001;s:60:"CollectionTest::collection_is_instance_of_iterator_aggregate";d:0;s:42:"CollectionTest::collection_can_be_iterated";d:0;s:64:"CollectionTest::collection_can_be_merged_with_another_collection";d:0;s:46:"CollectionTest::can_add_to_existing_collection";d:0;s:42:"CollectionTest::returns_json_encoded_items";d:0;s:62:"CollectionTest::json_encoding_a_collection_object_returns_json";d:0.001;}}}

‎app/Support/Collection.php

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<?php
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namespace App\Support;
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use IteratorAggregate;
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use ArrayIterator;
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use JsonSerializable;
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class Collection implements IteratorAggregate, JsonSerializable {
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protected $items = [];
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public function __construct(array $items = []) {
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$this->items = $items;
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}
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public function getIterator() {
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return new ArrayIterator($this->items);
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}
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public function get() {
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return $this->items;
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}
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public function count() {
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return count($this->items);
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}
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public function merge(Collection $collection) {
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// return new Collection(
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// array_merge(
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// $this->get(),
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// $collection->get()
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// )
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// );
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return $this->add($collection->get());
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}
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public function add(array $items) {
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$this->items = array_merge(
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$this->get(),
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$items
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);
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}
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public function toJson() {
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return json_encode($this->items);
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}
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public function jsonSerialize() {
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return $this->items;
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}
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}

‎tests/unit/CollectionTest.php

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<?php
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class CollectionTest extends \PHPUnit\Framework\TestCase
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{
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/** @test */
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public function empty_instantiated_collection_returns_no_items()
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{
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$collection = new \App\Support\Collection;
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$this->assertEmpty($collection->get());
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}
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/** @test */
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public function count_is_correct_for_items_passed_in() {
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$collection = new \App\Support\Collection([
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'one', 'two', 'three'
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]);
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$this->assertEquals(
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$collection->count(),
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3
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);
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}
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/** @test */
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public function items_returned_match_items_passed_in() {
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$collection = new \App\Support\Collection([
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'one', 'two', 'three'
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]);
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$this->assertCount(3, $collection->get());
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$this->assertEquals($collection->get()[0], 'one');
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$this->assertEquals($collection->get()[1], 'two');
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$this->assertEquals($collection->get()[2], 'three');
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}
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/** @test */
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public function collection_is_instance_of_iterator_aggregate() {
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$collection = new \App\Support\Collection;
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$this->assertInstanceOf(iteratorAggregate::class, $collection);
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}
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/** @test */
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public function collection_can_be_iterated() {
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$collection = new \App\Support\Collection([
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'one', 'two', 'three'
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]);
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$items = [];
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foreach($collection as $item) {
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$items[] = $item;
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}
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$this->assertCount(3, $items);
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$this->assertInstanceOf(
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ArrayIterator::class,
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$collection->getIterator()
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);
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}
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/** @test */
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public function can_add_to_existing_collection() {
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$collection = new \App\Support\Collection(['one', 'two']);
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$collection->add(['three']);
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$this->assertCount(3, $collection->get());
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$this->assertEquals(3, $collection->count());
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}
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/** @test */
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public function collection_can_be_merged_with_another_collection() {
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$collection1 = new \App\Support\Collection(['one', 'two']);
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$collection2 = new \App\Support\Collection(['three', 'four', 'five']);
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$collection1->merge($collection2);
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$this->assertCount(5, $collection1->get());
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$this->assertEquals(5, $collection1->count());
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}
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/** @test */
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public function returns_json_encoded_items() {
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$collection = new \App\Support\Collection([
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['username' => 'dino'],
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['username' => 'frank']
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]);
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$this->assertIsString($collection->toJson());
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$this->assertEquals(
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'[{"username":"dino"},{"username":"frank"}]',
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$collection->toJson()
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);
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}
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/** @test */
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public function json_encoding_a_collection_object_returns_json() {
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$collection = new \App\Support\Collection([
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['username' => 'dino'],
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['username' => 'jeff']
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]);
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$encoded = json_encode($collection);
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$this->assertIsString($collection->toJson());
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$this->assertEquals(
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'[{"username":"dino"},{"username":"jeff"}]',
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$encoded
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);
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}
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}

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