Including Tests and verifications for errors

tests/bilingualFileTest.php

@@ -0,0 +1,37 @@
+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+use BrunoFontes\Memsource;
+
+final class BilingualFileTest extends TestCase
+{
+    public function testEmptyDownloadJobUidListShouldReturnEmptyFilenames()
+    {
+        $api = new Memsource('fakeToken');
+        $this->assertEquals(
+            [],
+            $api->bilingualFile()->download('uid', [], 'filename')
+        );
+    }
+    public function testInvalidDownloadUidsShouldThrowError()
+    {
+        $api = new Memsource('fakeToken');
+        $this->expectException(\Exception::class);
+        $api->bilingualFile()->download('uid', ['a'], 'filename');
+    }
+
+    public function testUploadInexistentFileShouldThrowError()
+    {
+        $api = new Memsource('fakeToken');
+        $this->expectException(\Exception::class);
+        $api->bilingualFile()->upload('myInvalidFile', []);
+    }
+
+    public function testUploadWithNoTokenShouldThrowError()
+    {
+        $api = new Memsource('fakeToken');
+        $this->expectException(\Exception::class);
+        $api->bilingualFile()->upload('tests/bilingualFileTest.php', []);
+    }
+}