[PROPOSAL] Add more tests to the library (#865)

* phpunit: use dedicate `Tests` namespace for tests

* tests: replace phpunit with orchestra/testbench

* phpunit: ignore result cache file

* phpunit: adapt test for newer version

* tests: add base testcase class with a helper to run/assert commands

* tests: add test for ide-helper:eloquent

* travis: add global default variables

* travis: disable xdebug, speeds up running tests

* travis: convert php versions to build matrix for environment vars

* travis: only run phpcs/phpunit when the env vars signal it

However phpcs only runs with one test combination from the matrix,
not necessary to execute it every time.

tests/Console/EloquentCommandTest.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console;
+
+use Barryvdh\LaravelIdeHelper\Console\EloquentCommand;
+use Barryvdh\LaravelIdeHelper\Tests\TestCase;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Filesystem\Filesystem;
+use Mockery;
+use ReflectionClass;
+
+class EloquentCommandTest extends TestCase
+{
+    public function testCommand()
+    {
+        $modelFilename = $this->getVendorModelFilename();
+
+        // Ensure the mixins are not present
+        $modelSource = file_get_contents($modelFilename);
+        $this->assertStringNotContainsString('* @mixin \\Eloquent', $modelSource);
+        $this->assertStringNotContainsString('* @mixin \\Illuminate\\Database\\Eloquent\\Builder', $modelSource);
+        $this->assertStringNotContainsString('* @mixin \\Illuminate\\Database\\Query\\Builder', $modelSource);
+
+        $actualContent = null;
+        $mockFilesystem = Mockery::mock(Filesystem::class);
+        $mockFilesystem
+            ->shouldReceive('get')
+            // We don't care about actual args (filename)
+            ->andReturn('abstract class Model implements'); // This is enough to trigger the replacement logic
+        $mockFilesystem
+            ->shouldReceive('put')
+            ->with(
+                Mockery::any(), // First arg is path, we don't care
+                Mockery::capture($actualContent)
+            )
+            ->andReturn(1) // Simulate we wrote _something_ to the file
+            ->once();
+
+        $this->instance(Filesystem::class, $mockFilesystem);
+        $command = $this->app->make(EloquentCommand::class);
+
+        $tester = $this->runCommand($command);
+
+        $expectedContent = '/**
+ * 
+ *
+ * @mixin \Eloquent
+ * @mixin \Illuminate\Database\Eloquent\Builder
+ * @mixin \Illuminate\Database\Query\Builder
+ */
+abstract class Model implements';
+        $this->assertSame($expectedContent, $actualContent);
+
+        $display = $tester->getDisplay();
+        $this->assertRegExp(';Unexpected no document on Illuminate\\\Database\\\Eloquent\\\Model;', $display);
+        $this->assertRegExp(';Wrote expected docblock to .*/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php;', $display);
+    }
+
+    private function getVendorModelFilename(): string
+    {
+        $class = Model::class;
+        $reflectedClass = new ReflectionClass($class);
+
+        return $reflectedClass->getFileName();
+    }
+}

tests/MethodTest.php

@@ -1,8 +1,11 @@
 <?php
 
-namespace Barryvdh\LaravelIdeHelper;
+namespace Barryvdh\LaravelIdeHelper\Tests;
 
-class ExampleTest extends \PHPUnit_Framework_TestCase
+use Barryvdh\LaravelIdeHelper\Method;
+use PHPUnit\Framework\TestCase;
+
+class ExampleTest extends TestCase
 {
     /**
      * Test that we can actually instantiate the class

tests/TestCase.php

@@ -0,0 +1,36 @@
+<?php declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests;
+
+use Illuminate\Console\Command;
+use Orchestra\Testbench\TestCase as BaseTestCase;
+use Symfony\Component\Console\Tester\CommandTester;
+
+abstract class TestCase extends BaseTestCase
+{
+    /**
+     * The `CommandTester` is directly returned, use methods like
+     * `->getDisplay()` or `->getStatusCode()` on it.
+     *
+     * @param Command $command
+     * @param array $arguments The command line arguments, array of key=>value
+     *   Examples:
+     *   - named  arguments: ['model' => 'Post']
+     *   - boolean flags: ['--all' => true]
+     *   - arguments with values: ['--arg' => 'value']
+     * @param array $interactiveInput Interactive responses to the command
+     *   I.e. anything the command `->ask()` or `->confirm()`, etc.
+     * @return CommandTester
+     */
+    protected function runCommand(Command $command, array $arguments = [], array $interactiveInput = []): CommandTester
+    {
+        $command->setLaravel($this->app);
+
+        $tester = new CommandTester($command);
+        $tester->setInputs($interactiveInput);
+
+        $tester->execute($arguments);
+
+        return $tester;
+    }
+}