feature: add test coverage

tests/Pest.php

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+<?php
+
+/*
+|--------------------------------------------------------------------------
+| Test Case
+|--------------------------------------------------------------------------
+|
+| The closure you provide to your test functions is always bound to a specific PHPUnit test
+| case class. By default, that class is "PHPUnit\Framework\TestCase". Of course, you may
+| need to change it using the "uses()" function to bind a different classes or traits.
+|
+*/
+
+// uses(Tests\TestCase::class)->in('Feature');
+
+/*
+|--------------------------------------------------------------------------
+| Expectations
+|--------------------------------------------------------------------------
+|
+| When you're writing tests, you often need to check that values meet certain conditions. The
+| "expect()" function gives you access to a set of "expectations" methods that you can use
+| to assert different things. Of course, you may extend the Expectation API at any time.
+|
+*/
+
+expect()->extend('toBeOne', function () {
+    return $this->toBe(1);
+});
+
+/*
+|--------------------------------------------------------------------------
+| Functions
+|--------------------------------------------------------------------------
+|
+| While Pest is very powerful out-of-the-box, you may have some testing code specific to your
+| project that you don't want to repeat in every file. Here you can also expose helpers as
+| global functions to help you to reduce the number of lines of code in your test files.
+|
+*/
+
+function something()
+{
+    // ..
+}

tests/TestCase.php

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+<?php
+
+namespace Tests;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+abstract class TestCase extends BaseTestCase
+{
+    //
+}

tests/Unit/CollectionTest.php

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+<?php
+
+use Omisai\Continents\Collection;
+use Omisai\Continents\Continent;
+
+it('should return an array of continents', function () {
+    $collection = new Collection();
+    $continents = $collection->getContinents();
+
+    expect($continents)->toBeArray();
+    expect($continents)->toHaveCount(7);
+    expect($continents[0])->toBeInstanceOf(Continent::class);
+});
+
+it('should return a continent by code', function () {
+    $collection = new Collection();
+    $continent = $collection->getContinentByCode('AF');
+
+    expect($continent)->toBeInstanceOf(Continent::class);
+    expect($continent->code)->toBe('AF');
+});
+
+it('should return a continent by name', function () {
+    $collection = new Collection();
+    $continent = $collection->getContinentByName('Africa');
+
+    expect($continent)->toBeInstanceOf(Continent::class);
+    expect($continent->name)->toBe('Africa');
+});

tests/Unit/ContinentTest.php

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+<?php
+
+use Omisai\Continents\Continent;
+use Omisai\Continents\Models\Europe;
+
+it('can get the name in English', function () {
+    $continent = new Europe();
+
+    expect($continent->getName())->toBe('Europe');
+});
+it('can access the name in English without get', function () {
+    $continent = new Europe();
+
+    expect($continent->name)->toBe('Europe');
+});
+
+it('can validate a valid locale', function () {
+    Continent::validate('en');
+})->throwsNoExceptions();
+
+it('throws an exception for an invalid locale', function () {
+    Continent::validate('invalid');
+})->throws(\InvalidArgumentException::class);;
+
+
+it('can access other locale', function () {
+    $continent = new Europe();
+
+    expect($continent->getName('hu'))->toBe('Európa');
+    expect($continent->getName('es'))->toBe('Europa');
+});