Add test for InputMerger

Author: nochso

tests/PHPSemVerChecker/Console/InputMergerTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace PHPSemVerChecker\Test\Console;
+
+use PHPSemVerChecker\Configuration\Configuration;
+use PHPSemVerChecker\Console\Command\CompareCommand;
+use PHPSemVerChecker\Console\InputMerger;
+use Symfony\Component\Console\Input\StringInput;
+
+class InputMergerTest extends \PHPUnit_Framework_TestCase
+{
+	public function testMerge()
+	{
+		$config = new Configuration([]);
+		// Prepare options and arguments
+		$config->set('include-before', 'in-before config');
+		$config->set('source-after', 'src-after config');
+
+		// Specify options and arguments for input
+		$input = new StringInput('--include-before "in-before cli" "src-before cli"');
+		$command = new CompareCommand();
+		$input->bind($command->getDefinition());
+		$this->assertEquals('in-before cli', $input->getOption('include-before'), 'Test setup: Could not prepare input arguments');
+
+		$im = new InputMerger();
+		$im->merge($input, $config);
+		$this->assertEquals('in-before cli', $config->get('include-before'), 'Configuration must be overwritten by CLI option');
+		$this->assertEquals('src-before cli', $config->get('source-before'), 'Configuration must be overwritten by CLI argument');
+		$this->assertEquals('src-before cli', $input->getArgument('source-before'), 'Input arguments must not be overwritten by empty configuration');
+		$this->assertEquals('src-after config', $config->get('source-after'), 'Configuration must not be overwritten by empty CLI argument');
+		$this->assertEquals('src-after config', $input->getArgument('source-after'), 'Missing input arguments must take on existing configuration');
+	}
+}