Merge pull request #12 from JeroenDeDauw/SpyingFileFetcher

Added getFirstFetchedUrl to SpyingFileFetcher

src/SpyingFileFetcher.php

@@ -40,4 +40,13 @@ public function getFetchedUrls(): array {
 		return $this->fetchedUrls;
 	}
 
+	/**
+	 * @since 4.3
+	 *
+	 * @return string|null
+	 */
+	public function getFirstFetchedUrl() {
+		return empty( $this->fetchedUrls ) ? null : $this->fetchedUrls[0];
+	}
+
 }

tests/unit/SpyingFileFetcherTest.php

@@ -6,6 +6,7 @@
 
 use FileFetcher\FileFetchingException;
 use FileFetcher\InMemoryFileFetcher;
+use FileFetcher\NullFileFetcher;
 use FileFetcher\SpyingFileFetcher;
 use FileFetcher\ThrowingFileFetcher;
 use PHPUnit\Framework\TestCase;
@@ -75,4 +76,23 @@ public function testCallsCausingExceptionsGetRecorded() {
 		$this->assertSame( [ 'url', 'foo' ], $spyingFetcher->getFetchedUrls() );
 	}
 
+	public function testWhenThereAreSomeCalls_getFirstFetchedUrlReturnsTheFirstOne() {
+		$innerFetcher = new InMemoryFileFetcher( [
+			'url' => 'content',
+			'foo' => 'bar'
+		] );
+
+		$spyingFetcher = new SpyingFileFetcher( $innerFetcher );
+		$spyingFetcher->fetchFile( 'url' );
+		$spyingFetcher->fetchFile( 'foo' );
+
+		$this->assertSame( 'url', $spyingFetcher->getFirstFetchedUrl() );
+	}
+
+	public function testWhenThereAreNoCalls_getFirstFetchedUrlReturnsNull() {
+		$spyingFetcher = new SpyingFileFetcher( new NullFileFetcher() );
+
+		$this->assertNull( $spyingFetcher->getFirstFetchedUrl() );
+	}
+
 }