Merge a8846bf into 1a30e21

README.md

@@ -36,6 +36,10 @@ FileFetcher.php.
 
 ## Release notes
 
+### 3.1.0 (2016-01-07)
+
+* Added `InMemoryFileFetcher`
+
 ### 3.0.0 (2015-08-21)
 
 * Added `FileFetchingException`, which should now be thrown by implementations of `FileFetcher` on error

composer.json

@@ -24,7 +24,7 @@
 		"jeroen/simple-cache": "~2.0"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "~5.0",
+		"phpunit/phpunit": "~4.0",
 		"squizlabs/php_codesniffer": "~2.1",
 		"phpmd/phpmd": "~2.1",
 		"ockcyp/covers-validator": "~0.4"
@@ -36,7 +36,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "3.0.x-dev"
+			"dev-master": "3.1.x-dev"
 		}
 	},
 	"scripts": {

src/InMemoryFileFetcher.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace FileFetcher;
+
+use InvalidArgumentException;
+
+/**
+ * @since 3.1
+ *
+ * @licence GNU GPL v2+
+ * @author Jeroen De Dauw < jeroendedauw@gmail.com >
+ */
+class InMemoryFileFetcher implements FileFetcher {
+
+	/**
+	 * @param string[] $files
+	 * @throws InvalidArgumentException
+	 */
+	public function __construct( array $files ) {
+		foreach ( $files as $url => $fileContents ) {
+			if ( !is_string( $url ) || !is_string( $fileContents ) ) {
+				throw new InvalidArgumentException( 'Both file url and file contents need to be of type string' );
+			}
+		}
+
+		$this->files = $files;
+	}
+
+	/**
+	 * @see FileFetcher::fetchFile
+	 *
+	 * @param string $fileUrl
+	 *
+	 * @return string
+	 * @throws FileFetchingException
+	 */
+	public function fetchFile( $fileUrl ) {
+		if ( array_key_exists( $fileUrl, $this->files ) ) {
+			return $this->files[$fileUrl];
+		}
+
+		throw new FileFetchingException( $fileUrl );
+	}
+
+}

tests/unit/InMemoryFileFetcherTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace FileFetcher\Tests\Phpunit;
+
+use FileFetcher\InMemoryFileFetcher;
+
+/**
+ * @covers FileFetcher\InMemoryFileFetcher
+ *
+ * @licence GNU GPL v2+
+ * @author Jeroen De Dauw < jeroendedauw@gmail.com >
+ */
+class InMemoryFileFetcherTest extends \PHPUnit_Framework_TestCase {
+
+	public function testWhenEmptyHash_requestsCauseException() {
+		$fetcher = new InMemoryFileFetcher( array() );
+
+		$this->setExpectedException( 'FileFetcher\FileFetchingException' );
+		$fetcher->fetchFile( 'http://foo.bar/baz' );
+	}
+
+	public function testWhenUrlNotKnown_requestsCauseException() {
+		$fetcher = new InMemoryFileFetcher( array(
+			'http://something.else/entirely' => 'kittens'
+		) );
+
+		$this->setExpectedException( 'FileFetcher\FileFetchingException' );
+		$fetcher->fetchFile( 'http://foo.bar/baz' );
+	}
+
+	public function testWhenUrlKnown_requestsReturnsValue() {
+		$fetcher = new InMemoryFileFetcher( array(
+			'http://something.else/entirely' => 'kittens',
+			'http://foo.bar/baz' => 'cats'
+		) );
+
+		$this->assertSame( 'cats', $fetcher->fetchFile( 'http://foo.bar/baz' ) );
+	}
+
+}