diff --git a/src/Illuminate/Filesystem/FilesystemAdapter.php b/src/Illuminate/Filesystem/FilesystemAdapter.php
index 654012b33978..afe8244efa2d 100644
--- a/src/Illuminate/Filesystem/FilesystemAdapter.php
+++ b/src/Illuminate/Filesystem/FilesystemAdapter.php
@@ -9,6 +9,7 @@
 use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Collection;
 use League\Flysystem\AdapterInterface;
+use PHPUnit\Framework\Assert as PHPUnit;
 use League\Flysystem\FilesystemInterface;
 use League\Flysystem\AwsS3v3\AwsS3Adapter;
 use League\Flysystem\FileNotFoundException;
@@ -37,6 +38,32 @@ public function __construct(FilesystemInterface $driver)
         $this->driver = $driver;
     }
 
+    /**
+     * Assert that the given file exists.
+     *
+     * @param  string  $path
+     * @return void
+     */
+    public function assertExists($path)
+    {
+        PHPUnit::assertTrue(
+            $this->exists($path), "Unable to find a file at path [{$path}]."
+        );
+    }
+
+    /**
+     * Assert that the given file does not exist.
+     *
+     * @param  string  $path
+     * @return void
+     */
+    public function assertMissing($path)
+    {
+        PHPUnit::assertFalse(
+            $this->exists($path), "Found unexpected file at path [{$path}]."
+        );
+    }
+
     /**
      * Determine if a file exists.
      *
diff --git a/src/Illuminate/Filesystem/FilesystemManager.php b/src/Illuminate/Filesystem/FilesystemManager.php
index a5142377738e..db1942982034 100644
--- a/src/Illuminate/Filesystem/FilesystemManager.php
+++ b/src/Illuminate/Filesystem/FilesystemManager.php
@@ -271,6 +271,18 @@ protected function adapt(FilesystemInterface $filesystem)
         return new FilesystemAdapter($filesystem);
     }
 
+    /**
+     * Set the given disk instance.
+     *
+     * @param  string  $name
+     * @param  mixed  $disk
+     * @return void
+     */
+    public function set($name, $disk)
+    {
+        $this->disks[$name] = $disk;
+    }
+
     /**
      * Get the filesystem connection configuration.
      *
diff --git a/src/Illuminate/Http/Testing/File.php b/src/Illuminate/Http/Testing/File.php
new file mode 100644
index 000000000000..37d41ea23b99
--- /dev/null
+++ b/src/Illuminate/Http/Testing/File.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Illuminate\Http\Testing;
+
+use Illuminate\Http\UploadedFile;
+
+class File extends UploadedFile
+{
+    /**
+     * The name of the file.
+     *
+     * @var string
+     */
+    public $name;
+
+    /**
+     * The temporary file resource.
+     *
+     * @var resource
+     */
+    public $tempFile;
+
+    /**
+     * The "size" to report.
+     *
+     * @var int
+     */
+    public $sizeToReport;
+
+    /**
+     * Create a new file instance.
+     *
+     * @param  string  $name
+     * @param  resource  $tempFile
+     * @return void
+     */
+    public function __construct($name, $tempFile)
+    {
+        $this->name = $name;
+        $this->tempFile = $tempFile;
+
+        parent::__construct(
+            $this->tempFilePath(), $name, $this->getMimeType(),
+            filesize($this->tempFilePath()), $error = null, $test = true
+        );
+    }
+
+    /**
+     * Set the "size" of the file in kilobytes.
+     *
+     * @param  int  $kilobytes
+     * @return $this
+     */
+    public function size($kilobytes)
+    {
+        $this->sizeToReport = $kilobytes * 1024;
+
+        return $this;
+    }
+
+    /**
+     * Get the size of the file.
+     *
+     * @return int
+     */
+    public function getSize()
+    {
+        return $this->sizeToReport ?: parent::getSize();
+    }
+
+    /**
+     * Get the MIME type for the file.
+     *
+     * @return string
+     */
+    public function getMimeType()
+    {
+        return MimeType::from($this->name);
+    }
+
+    /**
+     * Get the path to the temporary file.
+     *
+     * @return string
+     */
+    protected function tempFilePath()
+    {
+        return stream_get_meta_data($this->tempFile)['uri'];
+    }
+}
diff --git a/src/Illuminate/Http/Testing/FileFactory.php b/src/Illuminate/Http/Testing/FileFactory.php
new file mode 100644
index 000000000000..1375773bff90
--- /dev/null
+++ b/src/Illuminate/Http/Testing/FileFactory.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace Illuminate\Http\Testing;
+
+class FileFactory
+{
+    /**
+     * Create a new fake file.
+     *
+     * @param  string  $name
+     * @param  int  $kilobytes
+     * @return \Illuminate\Http\Testing\File
+     */
+    public function create($name, $kilobytes)
+    {
+        return tap(new File($name, tmpfile()), function ($file) use ($kilobytes) {
+            $file->sizeToReport = $kilobytes * 1024;
+        });
+    }
+
+    /**
+     * Create a new fake image.
+     *
+     * @param  string  $name
+     * @param  int  $height
+     * @param  int  $height
+     * @return \Illuminate\Http\Testing\File
+     */
+    public function image($name, $width = 10, $height = 10)
+    {
+        return new File($name, $this->generateImage($width, $height));
+    }
+
+    /**
+     * Generate a dummy image of the given width and height.
+     *
+     * @param  int  $width
+     * @param  int  $height
+     * @return resource
+     */
+    protected function generateImage($width, $height)
+    {
+        return tap(tmpfile(), function ($temp) use ($width, $height) {
+            imagepng(imagecreatetruecolor($width, $height), $temp);
+        });
+    }
+}
diff --git a/src/Illuminate/Http/Testing/MimeType.php b/src/Illuminate/Http/Testing/MimeType.php
new file mode 100644
index 000000000000..61f0c2bec9fd
--- /dev/null
+++ b/src/Illuminate/Http/Testing/MimeType.php
@@ -0,0 +1,792 @@
+<?php
+
+namespace Illuminate\Http\Testing;
+
+class MimeType
+{
+    /**
+     * An array of extension to MIME types.
+     *
+     * @var array
+     */
+    protected static $mimes = [
+        'ez' => 'application/andrew-inset',
+        'aw' => 'application/applixware',
+        'atom' => 'application/atom+xml',
+        'atomcat' => 'application/atomcat+xml',
+        'atomsvc' => 'application/atomsvc+xml',
+        'ccxml' => 'application/ccxml+xml',
+        'cdmia' => 'application/cdmi-capability',
+        'cdmic' => 'application/cdmi-container',
+        'cdmid' => 'application/cdmi-domain',
+        'cdmio' => 'application/cdmi-object',
+        'cdmiq' => 'application/cdmi-queue',
+        'cu' => 'application/cu-seeme',
+        'davmount' => 'application/davmount+xml',
+        'dbk' => 'application/docbook+xml',
+        'dssc' => 'application/dssc+der',
+        'xdssc' => 'application/dssc+xml',
+        'ecma' => 'application/ecmascript',
+        'emma' => 'application/emma+xml',
+        'epub' => 'application/epub+zip',
+        'exi' => 'application/exi',
+        'pfr' => 'application/font-tdpfr',
+        'gml' => 'application/gml+xml',
+        'gpx' => 'application/gpx+xml',
+        'gxf' => 'application/gxf',
+        'stk' => 'application/hyperstudio',
+        'ink' => 'application/inkml+xml',
+        'ipfix' => 'application/ipfix',
+        'jar' => 'application/java-archive',
+        'ser' => 'application/java-serialized-object',
+        'class' => 'application/java-vm',
+        'js' => 'application/javascript',
+        'json' => 'application/json',
+        'jsonml' => 'application/jsonml+json',
+        'lostxml' => 'application/lost+xml',
+        'hqx' => 'application/mac-binhex40',
+        'cpt' => 'application/mac-compactpro',
+        'mads' => 'application/mads+xml',
+        'mrc' => 'application/marc',
+        'mrcx' => 'application/marcxml+xml',
+        'ma' => 'application/mathematica',
+        'mathml' => 'application/mathml+xml',
+        'mbox' => 'application/mbox',
+        'mscml' => 'application/mediaservercontrol+xml',
+        'metalink' => 'application/metalink+xml',
+        'meta4' => 'application/metalink4+xml',
+        'mets' => 'application/mets+xml',
+        'mods' => 'application/mods+xml',
+        'm21' => 'application/mp21',
+        'mp4s' => 'application/mp4',
+        'doc' => 'application/msword',
+        'mxf' => 'application/mxf',
+        'bin' => 'application/octet-stream',
+        'oda' => 'application/oda',
+        'opf' => 'application/oebps-package+xml',
+        'ogx' => 'application/ogg',
+        'omdoc' => 'application/omdoc+xml',
+        'onetoc' => 'application/onenote',
+        'oxps' => 'application/oxps',
+        'xer' => 'application/patch-ops-error+xml',
+        'pdf' => 'application/pdf',
+        'pgp' => 'application/pgp-encrypted',
+        'asc' => 'application/pgp-signature',
+        'prf' => 'application/pics-rules',
+        'p10' => 'application/pkcs10',
+        'p7m' => 'application/pkcs7-mime',
+        'p7s' => 'application/pkcs7-signature',
+        'p8' => 'application/pkcs8',
+        'ac' => 'application/pkix-attr-cert',
+        'cer' => 'application/pkix-cert',
+        'crl' => 'application/pkix-crl',
+        'pkipath' => 'application/pkix-pkipath',
+        'pki' => 'application/pkixcmp',
+        'pls' => 'application/pls+xml',
+        'ai' => 'application/postscript',
+        'cww' => 'application/prs.cww',
+        'pskcxml' => 'application/pskc+xml',
+        'rdf' => 'application/rdf+xml',
+        'rif' => 'application/reginfo+xml',
+        'rnc' => 'application/relax-ng-compact-syntax',
+        'rl' => 'application/resource-lists+xml',
+        'rld' => 'application/resource-lists-diff+xml',
+        'rs' => 'application/rls-services+xml',
+        'gbr' => 'application/rpki-ghostbusters',
+        'mft' => 'application/rpki-manifest',
+        'roa' => 'application/rpki-roa',
+        'rsd' => 'application/rsd+xml',
+        'rss' => 'application/rss+xml',
+        'sbml' => 'application/sbml+xml',
+        'scq' => 'application/scvp-cv-request',
+        'scs' => 'application/scvp-cv-response',
+        'spq' => 'application/scvp-vp-request',
+        'spp' => 'application/scvp-vp-response',
+        'sdp' => 'application/sdp',
+        'setpay' => 'application/set-payment-initiation',
+        'setreg' => 'application/set-registration-initiation',
+        'shf' => 'application/shf+xml',
+        'smi' => 'application/smil+xml',
+        'rq' => 'application/sparql-query',
+        'srx' => 'application/sparql-results+xml',
+        'gram' => 'application/srgs',
+        'grxml' => 'application/srgs+xml',
+        'sru' => 'application/sru+xml',
+        'ssdl' => 'application/ssdl+xml',
+        'ssml' => 'application/ssml+xml',
+        'tei' => 'application/tei+xml',
+        'tfi' => 'application/thraud+xml',
+        'tsd' => 'application/timestamped-data',
+        'plb' => 'application/vnd.3gpp.pic-bw-large',
+        'psb' => 'application/vnd.3gpp.pic-bw-small',
+        'pvb' => 'application/vnd.3gpp.pic-bw-var',
+        'tcap' => 'application/vnd.3gpp2.tcap',
+        'pwn' => 'application/vnd.3m.post-it-notes',
+        'aso' => 'application/vnd.accpac.simply.aso',
+        'imp' => 'application/vnd.accpac.simply.imp',
+        'acu' => 'application/vnd.acucobol',
+        'atc' => 'application/vnd.acucorp',
+        'air' => 'application/vnd.adobe.air-application-installer-package+zip',
+        'fcdt' => 'application/vnd.adobe.formscentral.fcdt',
+        'fxp' => 'application/vnd.adobe.fxp',
+        'xdp' => 'application/vnd.adobe.xdp+xml',
+        'xfdf' => 'application/vnd.adobe.xfdf',
+        'ahead' => 'application/vnd.ahead.space',
+        'azf' => 'application/vnd.airzip.filesecure.azf',
+        'azs' => 'application/vnd.airzip.filesecure.azs',
+        'azw' => 'application/vnd.amazon.ebook',
+        'acc' => 'application/vnd.americandynamics.acc',
+        'ami' => 'application/vnd.amiga.ami',
+        'apk' => 'application/vnd.android.package-archive',
+        'cii' => 'application/vnd.anser-web-certificate-issue-initiation',
+        'fti' => 'application/vnd.anser-web-funds-transfer-initiation',
+        'atx' => 'application/vnd.antix.game-component',
+        'mpkg' => 'application/vnd.apple.installer+xml',
+        'm3u8' => 'application/vnd.apple.mpegurl',
+        'swi' => 'application/vnd.aristanetworks.swi',
+        'iota' => 'application/vnd.astraea-software.iota',
+        'aep' => 'application/vnd.audiograph',
+        'mpm' => 'application/vnd.blueice.multipass',
+        'bmi' => 'application/vnd.bmi',
+        'rep' => 'application/vnd.businessobjects',
+        'cdxml' => 'application/vnd.chemdraw+xml',
+        'mmd' => 'application/vnd.chipnuts.karaoke-mmd',
+        'cdy' => 'application/vnd.cinderella',
+        'cla' => 'application/vnd.claymore',
+        'rp9' => 'application/vnd.cloanto.rp9',
+        'c4g' => 'application/vnd.clonk.c4group',
+        'c11amc' => 'application/vnd.cluetrust.cartomobile-config',
+        'c11amz' => 'application/vnd.cluetrust.cartomobile-config-pkg',
+        'csp' => 'application/vnd.commonspace',
+        'cdbcmsg' => 'application/vnd.contact.cmsg',
+        'cmc' => 'application/vnd.cosmocaller',
+        'clkx' => 'application/vnd.crick.clicker',
+        'clkk' => 'application/vnd.crick.clicker.keyboard',
+        'clkp' => 'application/vnd.crick.clicker.palette',
+        'clkt' => 'application/vnd.crick.clicker.template',
+        'clkw' => 'application/vnd.crick.clicker.wordbank',
+        'wbs' => 'application/vnd.criticaltools.wbs+xml',
+        'pml' => 'application/vnd.ctc-posml',
+        'ppd' => 'application/vnd.cups-ppd',
+        'car' => 'application/vnd.curl.car',
+        'pcurl' => 'application/vnd.curl.pcurl',
+        'dart' => 'application/vnd.dart',
+        'rdz' => 'application/vnd.data-vision.rdz',
+        'uvf' => 'application/vnd.dece.data',
+        'uvt' => 'application/vnd.dece.ttml+xml',
+        'uvx' => 'application/vnd.dece.unspecified',
+        'uvz' => 'application/vnd.dece.zip',
+        'fe_launch' => 'application/vnd.denovo.fcselayout-link',
+        'dna' => 'application/vnd.dna',
+        'mlp' => 'application/vnd.dolby.mlp',
+        'dpg' => 'application/vnd.dpgraph',
+        'dfac' => 'application/vnd.dreamfactory',
+        'kpxx' => 'application/vnd.ds-keypoint',
+        'ait' => 'application/vnd.dvb.ait',
+        'svc' => 'application/vnd.dvb.service',
+        'geo' => 'application/vnd.dynageo',
+        'mag' => 'application/vnd.ecowin.chart',
+        'nml' => 'application/vnd.enliven',
+        'esf' => 'application/vnd.epson.esf',
+        'msf' => 'application/vnd.epson.msf',
+        'qam' => 'application/vnd.epson.quickanime',
+        'slt' => 'application/vnd.epson.salt',
+        'ssf' => 'application/vnd.epson.ssf',
+        'es3' => 'application/vnd.eszigno3+xml',
+        'ez2' => 'application/vnd.ezpix-album',
+        'ez3' => 'application/vnd.ezpix-package',
+        'fdf' => 'application/vnd.fdf',
+        'mseed' => 'application/vnd.fdsn.mseed',
+        'seed' => 'application/vnd.fdsn.seed',
+        'gph' => 'application/vnd.flographit',
+        'ftc' => 'application/vnd.fluxtime.clip',
+        'fm' => 'application/vnd.framemaker',
+        'fnc' => 'application/vnd.frogans.fnc',
+        'ltf' => 'application/vnd.frogans.ltf',
+        'fsc' => 'application/vnd.fsc.weblaunch',
+        'oas' => 'application/vnd.fujitsu.oasys',
+        'oa2' => 'application/vnd.fujitsu.oasys2',
+        'oa3' => 'application/vnd.fujitsu.oasys3',
+        'fg5' => 'application/vnd.fujitsu.oasysgp',
+        'bh2' => 'application/vnd.fujitsu.oasysprs',
+        'ddd' => 'application/vnd.fujixerox.ddd',
+        'xdw' => 'application/vnd.fujixerox.docuworks',
+        'xbd' => 'application/vnd.fujixerox.docuworks.binder',
+        'fzs' => 'application/vnd.fuzzysheet',
+        'txd' => 'application/vnd.genomatix.tuxedo',
+        'ggb' => 'application/vnd.geogebra.file',
+        'ggt' => 'application/vnd.geogebra.tool',
+        'gex' => 'application/vnd.geometry-explorer',
+        'gxt' => 'application/vnd.geonext',
+        'g2w' => 'application/vnd.geoplan',
+        'g3w' => 'application/vnd.geospace',
+        'gmx' => 'application/vnd.gmx',
+        'kml' => 'application/vnd.google-earth.kml+xml',
+        'kmz' => 'application/vnd.google-earth.kmz',
+        'gqf' => 'application/vnd.grafeq',
+        'gac' => 'application/vnd.groove-account',
+        'ghf' => 'application/vnd.groove-help',
+        'gim' => 'application/vnd.groove-identity-message',
+        'grv' => 'application/vnd.groove-injector',
+        'gtm' => 'application/vnd.groove-tool-message',
+        'tpl' => 'application/vnd.groove-tool-template',
+        'vcg' => 'application/vnd.groove-vcard',
+        'hal' => 'application/vnd.hal+xml',
+        'zmm' => 'application/vnd.handheld-entertainment+xml',
+        'hbci' => 'application/vnd.hbci',
+        'les' => 'application/vnd.hhe.lesson-player',
+        'hpgl' => 'application/vnd.hp-hpgl',
+        'hpid' => 'application/vnd.hp-hpid',
+        'hps' => 'application/vnd.hp-hps',
+        'jlt' => 'application/vnd.hp-jlyt',
+        'pcl' => 'application/vnd.hp-pcl',
+        'pclxl' => 'application/vnd.hp-pclxl',
+        'sfd-hdstx' => 'application/vnd.hydrostatix.sof-data',
+        'mpy' => 'application/vnd.ibm.minipay',
+        'afp' => 'application/vnd.ibm.modcap',
+        'irm' => 'application/vnd.ibm.rights-management',
+        'sc' => 'application/vnd.ibm.secure-container',
+        'icc' => 'application/vnd.iccprofile',
+        'igl' => 'application/vnd.igloader',
+        'ivp' => 'application/vnd.immervision-ivp',
+        'ivu' => 'application/vnd.immervision-ivu',
+        'igm' => 'application/vnd.insors.igm',
+        'xpw' => 'application/vnd.intercon.formnet',
+        'i2g' => 'application/vnd.intergeo',
+        'qbo' => 'application/vnd.intu.qbo',
+        'qfx' => 'application/vnd.intu.qfx',
+        'rcprofile' => 'application/vnd.ipunplugged.rcprofile',
+        'irp' => 'application/vnd.irepository.package+xml',
+        'xpr' => 'application/vnd.is-xpr',
+        'fcs' => 'application/vnd.isac.fcs',
+        'jam' => 'application/vnd.jam',
+        'rms' => 'application/vnd.jcp.javame.midlet-rms',
+        'jisp' => 'application/vnd.jisp',
+        'joda' => 'application/vnd.joost.joda-archive',
+        'ktz' => 'application/vnd.kahootz',
+        'karbon' => 'application/vnd.kde.karbon',
+        'chrt' => 'application/vnd.kde.kchart',
+        'kfo' => 'application/vnd.kde.kformula',
+        'flw' => 'application/vnd.kde.kivio',
+        'kon' => 'application/vnd.kde.kontour',
+        'kpr' => 'application/vnd.kde.kpresenter',
+        'ksp' => 'application/vnd.kde.kspread',
+        'kwd' => 'application/vnd.kde.kword',
+        'htke' => 'application/vnd.kenameaapp',
+        'kia' => 'application/vnd.kidspiration',
+        'kne' => 'application/vnd.kinar',
+        'skp' => 'application/vnd.koan',
+        'sse' => 'application/vnd.kodak-descriptor',
+        'lasxml' => 'application/vnd.las.las+xml',
+        'lbd' => 'application/vnd.llamagraphics.life-balance.desktop',
+        'lbe' => 'application/vnd.llamagraphics.life-balance.exchange+xml',
+        '123' => 'application/vnd.lotus-1-2-3',
+        'apr' => 'application/vnd.lotus-approach',
+        'pre' => 'application/vnd.lotus-freelance',
+        'nsf' => 'application/vnd.lotus-notes',
+        'org' => 'application/vnd.lotus-organizer',
+        'scm' => 'application/vnd.lotus-screencam',
+        'lwp' => 'application/vnd.lotus-wordpro',
+        'portpkg' => 'application/vnd.macports.portpkg',
+        'mcd' => 'application/vnd.mcd',
+        'mc1' => 'application/vnd.medcalcdata',
+        'cdkey' => 'application/vnd.mediastation.cdkey',
+        'mwf' => 'application/vnd.mfer',
+        'mfm' => 'application/vnd.mfmp',
+        'flo' => 'application/vnd.micrografx.flo',
+        'igx' => 'application/vnd.micrografx.igx',
+        'mif' => 'application/vnd.mif',
+        'daf' => 'application/vnd.mobius.daf',
+        'dis' => 'application/vnd.mobius.dis',
+        'mbk' => 'application/vnd.mobius.mbk',
+        'mqy' => 'application/vnd.mobius.mqy',
+        'msl' => 'application/vnd.mobius.msl',
+        'plc' => 'application/vnd.mobius.plc',
+        'txf' => 'application/vnd.mobius.txf',
+        'mpn' => 'application/vnd.mophun.application',
+        'mpc' => 'application/vnd.mophun.certificate',
+        'xul' => 'application/vnd.mozilla.xul+xml',
+        'cil' => 'application/vnd.ms-artgalry',
+        'cab' => 'application/vnd.ms-cab-compressed',
+        'xls' => 'application/vnd.ms-excel',
+        'xlam' => 'application/vnd.ms-excel.addin.macroenabled.12',
+        'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroenabled.12',
+        'xlsm' => 'application/vnd.ms-excel.sheet.macroenabled.12',
+        'xltm' => 'application/vnd.ms-excel.template.macroenabled.12',
+        'eot' => 'application/vnd.ms-fontobject',
+        'chm' => 'application/vnd.ms-htmlhelp',
+        'ims' => 'application/vnd.ms-ims',
+        'lrm' => 'application/vnd.ms-lrm',
+        'thmx' => 'application/vnd.ms-officetheme',
+        'cat' => 'application/vnd.ms-pki.seccat',
+        'stl' => 'application/vnd.ms-pki.stl',
+        'ppt' => 'application/vnd.ms-powerpoint',
+        'ppam' => 'application/vnd.ms-powerpoint.addin.macroenabled.12',
+        'pptm' => 'application/vnd.ms-powerpoint.presentation.macroenabled.12',
+        'sldm' => 'application/vnd.ms-powerpoint.slide.macroenabled.12',
+        'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroenabled.12',
+        'potm' => 'application/vnd.ms-powerpoint.template.macroenabled.12',
+        'mpp' => 'application/vnd.ms-project',
+        'docm' => 'application/vnd.ms-word.document.macroenabled.12',
+        'dotm' => 'application/vnd.ms-word.template.macroenabled.12',
+        'wps' => 'application/vnd.ms-works',
+        'wpl' => 'application/vnd.ms-wpl',
+        'xps' => 'application/vnd.ms-xpsdocument',
+        'mseq' => 'application/vnd.mseq',
+        'mus' => 'application/vnd.musician',
+        'msty' => 'application/vnd.muvee.style',
+        'taglet' => 'application/vnd.mynfc',
+        'nlu' => 'application/vnd.neurolanguage.nlu',
+        'ntf' => 'application/vnd.nitf',
+        'nnd' => 'application/vnd.noblenet-directory',
+        'nns' => 'application/vnd.noblenet-sealer',
+        'nnw' => 'application/vnd.noblenet-web',
+        'ngdat' => 'application/vnd.nokia.n-gage.data',
+        'n-gage' => 'application/vnd.nokia.n-gage.symbian.install',
+        'rpst' => 'application/vnd.nokia.radio-preset',
+        'rpss' => 'application/vnd.nokia.radio-presets',
+        'edm' => 'application/vnd.novadigm.edm',
+        'edx' => 'application/vnd.novadigm.edx',
+        'ext' => 'application/vnd.novadigm.ext',
+        'odc' => 'application/vnd.oasis.opendocument.chart',
+        'otc' => 'application/vnd.oasis.opendocument.chart-template',
+        'odb' => 'application/vnd.oasis.opendocument.database',
+        'odf' => 'application/vnd.oasis.opendocument.formula',
+        'odft' => 'application/vnd.oasis.opendocument.formula-template',
+        'odg' => 'application/vnd.oasis.opendocument.graphics',
+        'otg' => 'application/vnd.oasis.opendocument.graphics-template',
+        'odi' => 'application/vnd.oasis.opendocument.image',
+        'oti' => 'application/vnd.oasis.opendocument.image-template',
+        'odp' => 'application/vnd.oasis.opendocument.presentation',
+        'otp' => 'application/vnd.oasis.opendocument.presentation-template',
+        'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
+        'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
+        'odt' => 'application/vnd.oasis.opendocument.text',
+        'odm' => 'application/vnd.oasis.opendocument.text-master',
+        'ott' => 'application/vnd.oasis.opendocument.text-template',
+        'oth' => 'application/vnd.oasis.opendocument.text-web',
+        'xo' => 'application/vnd.olpc-sugar',
+        'dd2' => 'application/vnd.oma.dd2+xml',
+        'oxt' => 'application/vnd.openofficeorg.extension',
+        'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+        'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
+        'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
+        'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
+        'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
+        'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+        'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
+        'mgp' => 'application/vnd.osgeo.mapguide.package',
+        'dp' => 'application/vnd.osgi.dp',
+        'esa' => 'application/vnd.osgi.subsystem',
+        'pdb' => 'application/vnd.palm',
+        'paw' => 'application/vnd.pawaafile',
+        'str' => 'application/vnd.pg.format',
+        'ei6' => 'application/vnd.pg.osasli',
+        'efif' => 'application/vnd.picsel',
+        'wg' => 'application/vnd.pmi.widget',
+        'plf' => 'application/vnd.pocketlearn',
+        'pbd' => 'application/vnd.powerbuilder6',
+        'box' => 'application/vnd.previewsystems.box',
+        'mgz' => 'application/vnd.proteus.magazine',
+        'qps' => 'application/vnd.publishare-delta-tree',
+        'ptid' => 'application/vnd.pvi.ptid1',
+        'qxd' => 'application/vnd.quark.quarkxpress',
+        'bed' => 'application/vnd.realvnc.bed',
+        'mxl' => 'application/vnd.recordare.musicxml',
+        'musicxml' => 'application/vnd.recordare.musicxml+xml',
+        'cryptonote' => 'application/vnd.rig.cryptonote',
+        'cod' => 'application/vnd.rim.cod',
+        'rm' => 'application/vnd.rn-realmedia',
+        'rmvb' => 'application/vnd.rn-realmedia-vbr',
+        'link66' => 'application/vnd.route66.link66+xml',
+        'st' => 'application/vnd.sailingtracker.track',
+        'see' => 'application/vnd.seemail',
+        'sema' => 'application/vnd.sema',
+        'semd' => 'application/vnd.semd',
+        'semf' => 'application/vnd.semf',
+        'ifm' => 'application/vnd.shana.informed.formdata',
+        'itp' => 'application/vnd.shana.informed.formtemplate',
+        'iif' => 'application/vnd.shana.informed.interchange',
+        'ipk' => 'application/vnd.shana.informed.package',
+        'twd' => 'application/vnd.simtech-mindmapper',
+        'mmf' => 'application/vnd.smaf',
+        'teacher' => 'application/vnd.smart.teacher',
+        'sdkm' => 'application/vnd.solent.sdkm+xml',
+        'dxp' => 'application/vnd.spotfire.dxp',
+        'sfs' => 'application/vnd.spotfire.sfs',
+        'sdc' => 'application/vnd.stardivision.calc',
+        'sda' => 'application/vnd.stardivision.draw',
+        'sdd' => 'application/vnd.stardivision.impress',
+        'smf' => 'application/vnd.stardivision.math',
+        'sdw' => 'application/vnd.stardivision.writer',
+        'sgl' => 'application/vnd.stardivision.writer-global',
+        'smzip' => 'application/vnd.stepmania.package',
+        'sm' => 'application/vnd.stepmania.stepchart',
+        'sxc' => 'application/vnd.sun.xml.calc',
+        'stc' => 'application/vnd.sun.xml.calc.template',
+        'sxd' => 'application/vnd.sun.xml.draw',
+        'std' => 'application/vnd.sun.xml.draw.template',
+        'sxi' => 'application/vnd.sun.xml.impress',
+        'sti' => 'application/vnd.sun.xml.impress.template',
+        'sxm' => 'application/vnd.sun.xml.math',
+        'sxw' => 'application/vnd.sun.xml.writer',
+        'sxg' => 'application/vnd.sun.xml.writer.global',
+        'stw' => 'application/vnd.sun.xml.writer.template',
+        'sus' => 'application/vnd.sus-calendar',
+        'svd' => 'application/vnd.svd',
+        'sis' => 'application/vnd.symbian.install',
+        'xsm' => 'application/vnd.syncml+xml',
+        'bdm' => 'application/vnd.syncml.dm+wbxml',
+        'xdm' => 'application/vnd.syncml.dm+xml',
+        'tao' => 'application/vnd.tao.intent-module-archive',
+        'pcap' => 'application/vnd.tcpdump.pcap',
+        'tmo' => 'application/vnd.tmobile-livetv',
+        'tpt' => 'application/vnd.trid.tpt',
+        'mxs' => 'application/vnd.triscape.mxs',
+        'tra' => 'application/vnd.trueapp',
+        'ufd' => 'application/vnd.ufdl',
+        'utz' => 'application/vnd.uiq.theme',
+        'umj' => 'application/vnd.umajin',
+        'unityweb' => 'application/vnd.unity',
+        'uoml' => 'application/vnd.uoml+xml',
+        'vcx' => 'application/vnd.vcx',
+        'vsd' => 'application/vnd.visio',
+        'vis' => 'application/vnd.visionary',
+        'vsf' => 'application/vnd.vsf',
+        'wbxml' => 'application/vnd.wap.wbxml',
+        'wmlc' => 'application/vnd.wap.wmlc',
+        'wmlsc' => 'application/vnd.wap.wmlscriptc',
+        'wtb' => 'application/vnd.webturbo',
+        'nbp' => 'application/vnd.wolfram.player',
+        'wpd' => 'application/vnd.wordperfect',
+        'wqd' => 'application/vnd.wqd',
+        'stf' => 'application/vnd.wt.stf',
+        'xar' => 'application/vnd.xara',
+        'xfdl' => 'application/vnd.xfdl',
+        'hvd' => 'application/vnd.yamaha.hv-dic',
+        'hvs' => 'application/vnd.yamaha.hv-script',
+        'hvp' => 'application/vnd.yamaha.hv-voice',
+        'osf' => 'application/vnd.yamaha.openscoreformat',
+        'osfpvg' => 'application/vnd.yamaha.openscoreformat.osfpvg+xml',
+        'saf' => 'application/vnd.yamaha.smaf-audio',
+        'spf' => 'application/vnd.yamaha.smaf-phrase',
+        'cmp' => 'application/vnd.yellowriver-custom-menu',
+        'zir' => 'application/vnd.zul',
+        'zaz' => 'application/vnd.zzazz.deck+xml',
+        'vxml' => 'application/voicexml+xml',
+        'wgt' => 'application/widget',
+        'hlp' => 'application/winhlp',
+        'wsdl' => 'application/wsdl+xml',
+        'wspolicy' => 'application/wspolicy+xml',
+        '7z' => 'application/x-7z-compressed',
+        'abw' => 'application/x-abiword',
+        'ace' => 'application/x-ace-compressed',
+        'dmg' => 'application/x-apple-diskimage',
+        'aab' => 'application/x-authorware-bin',
+        'aam' => 'application/x-authorware-map',
+        'aas' => 'application/x-authorware-seg',
+        'bcpio' => 'application/x-bcpio',
+        'torrent' => 'application/x-bittorrent',
+        'blb' => 'application/x-blorb',
+        'bz' => 'application/x-bzip',
+        'bz2' => 'application/x-bzip2',
+        'cbr' => 'application/x-cbr',
+        'vcd' => 'application/x-cdlink',
+        'cfs' => 'application/x-cfs-compressed',
+        'chat' => 'application/x-chat',
+        'pgn' => 'application/x-chess-pgn',
+        'nsc' => 'application/x-conference',
+        'cpio' => 'application/x-cpio',
+        'csh' => 'application/x-csh',
+        'deb' => 'application/x-debian-package',
+        'dgc' => 'application/x-dgc-compressed',
+        'dir' => 'application/x-director',
+        'wad' => 'application/x-doom',
+        'ncx' => 'application/x-dtbncx+xml',
+        'dtb' => 'application/x-dtbook+xml',
+        'res' => 'application/x-dtbresource+xml',
+        'dvi' => 'application/x-dvi',
+        'evy' => 'application/x-envoy',
+        'eva' => 'application/x-eva',
+        'bdf' => 'application/x-font-bdf',
+        'gsf' => 'application/x-font-ghostscript',
+        'psf' => 'application/x-font-linux-psf',
+        'otf' => 'application/x-font-otf',
+        'pcf' => 'application/x-font-pcf',
+        'snf' => 'application/x-font-snf',
+        'ttf' => 'application/x-font-ttf',
+        'pfa' => 'application/x-font-type1',
+        'woff' => 'application/x-font-woff',
+        'arc' => 'application/x-freearc',
+        'spl' => 'application/x-futuresplash',
+        'gca' => 'application/x-gca-compressed',
+        'ulx' => 'application/x-glulx',
+        'gnumeric' => 'application/x-gnumeric',
+        'gramps' => 'application/x-gramps-xml',
+        'gtar' => 'application/x-gtar',
+        'hdf' => 'application/x-hdf',
+        'install' => 'application/x-install-instructions',
+        'iso' => 'application/x-iso9660-image',
+        'jnlp' => 'application/x-java-jnlp-file',
+        'latex' => 'application/x-latex',
+        'lzh' => 'application/x-lzh-compressed',
+        'mie' => 'application/x-mie',
+        'prc' => 'application/x-mobipocket-ebook',
+        'application' => 'application/x-ms-application',
+        'lnk' => 'application/x-ms-shortcut',
+        'wmd' => 'application/x-ms-wmd',
+        'wmz' => 'application/x-ms-wmz',
+        'xbap' => 'application/x-ms-xbap',
+        'mdb' => 'application/x-msaccess',
+        'obd' => 'application/x-msbinder',
+        'crd' => 'application/x-mscardfile',
+        'clp' => 'application/x-msclip',
+        'exe' => 'application/x-msdownload',
+        'mvb' => 'application/x-msmediaview',
+        'wmf' => 'application/x-msmetafile',
+        'mny' => 'application/x-msmoney',
+        'pub' => 'application/x-mspublisher',
+        'scd' => 'application/x-msschedule',
+        'trm' => 'application/x-msterminal',
+        'wri' => 'application/x-mswrite',
+        'nc' => 'application/x-netcdf',
+        'nzb' => 'application/x-nzb',
+        'p12' => 'application/x-pkcs12',
+        'p7b' => 'application/x-pkcs7-certificates',
+        'p7r' => 'application/x-pkcs7-certreqresp',
+        'rar' => 'application/x-rar',
+        'ris' => 'application/x-research-info-systems',
+        'sh' => 'application/x-sh',
+        'shar' => 'application/x-shar',
+        'swf' => 'application/x-shockwave-flash',
+        'xap' => 'application/x-silverlight-app',
+        'sql' => 'application/x-sql',
+        'sit' => 'application/x-stuffit',
+        'sitx' => 'application/x-stuffitx',
+        'srt' => 'application/x-subrip',
+        'sv4cpio' => 'application/x-sv4cpio',
+        'sv4crc' => 'application/x-sv4crc',
+        't3' => 'application/x-t3vm-image',
+        'gam' => 'application/x-tads',
+        'tar' => 'application/x-tar',
+        'tcl' => 'application/x-tcl',
+        'tex' => 'application/x-tex',
+        'tfm' => 'application/x-tex-tfm',
+        'texinfo' => 'application/x-texinfo',
+        'obj' => 'application/x-tgif',
+        'ustar' => 'application/x-ustar',
+        'src' => 'application/x-wais-source',
+        'der' => 'application/x-x509-ca-cert',
+        'fig' => 'application/x-xfig',
+        'xlf' => 'application/x-xliff+xml',
+        'xpi' => 'application/x-xpinstall',
+        'xz' => 'application/x-xz',
+        'z1' => 'application/x-zmachine',
+        'xaml' => 'application/xaml+xml',
+        'xdf' => 'application/xcap-diff+xml',
+        'xenc' => 'application/xenc+xml',
+        'xhtml' => 'application/xhtml+xml',
+        'xml' => 'application/xml',
+        'dtd' => 'application/xml-dtd',
+        'xop' => 'application/xop+xml',
+        'xpl' => 'application/xproc+xml',
+        'xslt' => 'application/xslt+xml',
+        'xspf' => 'application/xspf+xml',
+        'mxml' => 'application/xv+xml',
+        'yang' => 'application/yang',
+        'yin' => 'application/yin+xml',
+        'zip' => 'application/zip',
+        'adp' => 'audio/adpcm',
+        'au' => 'audio/basic',
+        'mid' => 'audio/midi',
+        'mp4a' => 'audio/mp4',
+        'mpga' => 'audio/mpeg',
+        'oga' => 'audio/ogg',
+        's3m' => 'audio/s3m',
+        'sil' => 'audio/silk',
+        'uva' => 'audio/vnd.dece.audio',
+        'eol' => 'audio/vnd.digital-winds',
+        'dra' => 'audio/vnd.dra',
+        'dts' => 'audio/vnd.dts',
+        'dtshd' => 'audio/vnd.dts.hd',
+        'lvp' => 'audio/vnd.lucent.voice',
+        'pya' => 'audio/vnd.ms-playready.media.pya',
+        'ecelp4800' => 'audio/vnd.nuera.ecelp4800',
+        'ecelp7470' => 'audio/vnd.nuera.ecelp7470',
+        'ecelp9600' => 'audio/vnd.nuera.ecelp9600',
+        'rip' => 'audio/vnd.rip',
+        'weba' => 'audio/webm',
+        'aac' => 'audio/x-aac',
+        'aif' => 'audio/x-aiff',
+        'caf' => 'audio/x-caf',
+        'flac' => 'audio/x-flac',
+        'mka' => 'audio/x-matroska',
+        'm3u' => 'audio/x-mpegurl',
+        'wax' => 'audio/x-ms-wax',
+        'wma' => 'audio/x-ms-wma',
+        'ram' => 'audio/x-pn-realaudio',
+        'rmp' => 'audio/x-pn-realaudio-plugin',
+        'wav' => 'audio/x-wav',
+        'xm' => 'audio/xm',
+        'cdx' => 'chemical/x-cdx',
+        'cif' => 'chemical/x-cif',
+        'cmdf' => 'chemical/x-cmdf',
+        'cml' => 'chemical/x-cml',
+        'csml' => 'chemical/x-csml',
+        'xyz' => 'chemical/x-xyz',
+        'bmp' => 'image/bmp',
+        'cgm' => 'image/cgm',
+        'g3' => 'image/g3fax',
+        'gif' => 'image/gif',
+        'ief' => 'image/ief',
+        'jpg' => 'image/jpeg',
+        'jpeg' => 'image/jpeg',
+        'ktx' => 'image/ktx',
+        'png' => 'image/png',
+        'btif' => 'image/prs.btif',
+        'sgi' => 'image/sgi',
+        'svg' => 'image/svg+xml',
+        'tiff' => 'image/tiff',
+        'psd' => 'image/vnd.adobe.photoshop',
+        'uvi' => 'image/vnd.dece.graphic',
+        'djvu' => 'image/vnd.djvu',
+        'dwg' => 'image/vnd.dwg',
+        'dxf' => 'image/vnd.dxf',
+        'fbs' => 'image/vnd.fastbidsheet',
+        'fpx' => 'image/vnd.fpx',
+        'fst' => 'image/vnd.fst',
+        'mmr' => 'image/vnd.fujixerox.edmics-mmr',
+        'rlc' => 'image/vnd.fujixerox.edmics-rlc',
+        'mdi' => 'image/vnd.ms-modi',
+        'wdp' => 'image/vnd.ms-photo',
+        'npx' => 'image/vnd.net-fpx',
+        'wbmp' => 'image/vnd.wap.wbmp',
+        'xif' => 'image/vnd.xiff',
+        'webp' => 'image/webp',
+        '3ds' => 'image/x-3ds',
+        'ras' => 'image/x-cmu-raster',
+        'cmx' => 'image/x-cmx',
+        'fh' => 'image/x-freehand',
+        'ico' => 'image/x-icon',
+        'sid' => 'image/x-mrsid-image',
+        'pcx' => 'image/x-pcx',
+        'pic' => 'image/x-pict',
+        'pnm' => 'image/x-portable-anymap',
+        'pbm' => 'image/x-portable-bitmap',
+        'pgm' => 'image/x-portable-graymap',
+        'ppm' => 'image/x-portable-pixmap',
+        'rgb' => 'image/x-rgb',
+        'tga' => 'image/x-tga',
+        'xbm' => 'image/x-xbitmap',
+        'xpm' => 'image/x-xpixmap',
+        'xwd' => 'image/x-xwindowdump',
+        'eml' => 'message/rfc822',
+        'igs' => 'model/iges',
+        'msh' => 'model/mesh',
+        'dae' => 'model/vnd.collada+xml',
+        'dwf' => 'model/vnd.dwf',
+        'gdl' => 'model/vnd.gdl',
+        'gtw' => 'model/vnd.gtw',
+        'mts' => 'model/vnd.mts',
+        'vtu' => 'model/vnd.vtu',
+        'wrl' => 'model/vrml',
+        'x3db' => 'model/x3d+binary',
+        'x3dv' => 'model/x3d+vrml',
+        'x3d' => 'model/x3d+xml',
+        'appcache' => 'text/cache-manifest',
+        'ics' => 'text/calendar',
+        'css' => 'text/css',
+        'csv' => 'text/csv',
+        'html' => 'text/html',
+        'n3' => 'text/n3',
+        'txt' => 'text/plain',
+        'dsc' => 'text/prs.lines.tag',
+        'rtx' => 'text/richtext',
+        'rtf' => 'text/rtf',
+        'sgml' => 'text/sgml',
+        'tsv' => 'text/tab-separated-values',
+        't' => 'text/troff',
+        'ttl' => 'text/turtle',
+        'uri' => 'text/uri-list',
+        'vcard' => 'text/vcard',
+        'curl' => 'text/vnd.curl',
+        'dcurl' => 'text/vnd.curl.dcurl',
+        'scurl' => 'text/vnd.curl.scurl',
+        'mcurl' => 'text/vnd.curl.mcurl',
+        'sub' => 'text/vnd.dvb.subtitle',
+        'fly' => 'text/vnd.fly',
+        'flx' => 'text/vnd.fmi.flexstor',
+        'gv' => 'text/vnd.graphviz',
+        '3dml' => 'text/vnd.in3d.3dml',
+        'spot' => 'text/vnd.in3d.spot',
+        'jad' => 'text/vnd.sun.j2me.app-descriptor',
+        'wml' => 'text/vnd.wap.wml',
+        'wmls' => 'text/vnd.wap.wmlscript',
+        's' => 'text/x-asm',
+        'c' => 'text/x-c',
+        'f' => 'text/x-fortran',
+        'p' => 'text/x-pascal',
+        'java' => 'text/x-java-source',
+        'opml' => 'text/x-opml',
+        'nfo' => 'text/x-nfo',
+        'etx' => 'text/x-setext',
+        'sfv' => 'text/x-sfv',
+        'uu' => 'text/x-uuencode',
+        'vcs' => 'text/x-vcalendar',
+        'vcf' => 'text/x-vcard',
+        '3gp' => 'video/3gpp',
+        '3g2' => 'video/3gpp2',
+        'h261' => 'video/h261',
+        'h263' => 'video/h263',
+        'h264' => 'video/h264',
+        'jpgv' => 'video/jpeg',
+        'jpm' => 'video/jpm',
+        'mj2' => 'video/mj2',
+        'mp4' => 'video/mp4',
+        'mpeg' => 'video/mpeg',
+        'ogv' => 'video/ogg',
+        'qt' => 'video/quicktime',
+        'uvh' => 'video/vnd.dece.hd',
+        'uvm' => 'video/vnd.dece.mobile',
+        'uvp' => 'video/vnd.dece.pd',
+        'uvs' => 'video/vnd.dece.sd',
+        'uvv' => 'video/vnd.dece.video',
+        'dvb' => 'video/vnd.dvb.file',
+        'fvt' => 'video/vnd.fvt',
+        'mxu' => 'video/vnd.mpegurl',
+        'pyv' => 'video/vnd.ms-playready.media.pyv',
+        'uvu' => 'video/vnd.uvvu.mp4',
+        'viv' => 'video/vnd.vivo',
+        'webm' => 'video/webm',
+        'f4v' => 'video/x-f4v',
+        'fli' => 'video/x-fli',
+        'flv' => 'video/x-flv',
+        'm4v' => 'video/x-m4v',
+        'mkv' => 'video/x-matroska',
+        'mng' => 'video/x-mng',
+        'asf' => 'video/x-ms-asf',
+        'vob' => 'video/x-ms-vob',
+        'wm' => 'video/x-ms-wm',
+        'wmv' => 'video/x-ms-wmv',
+        'wmx' => 'video/x-ms-wmx',
+        'wvx' => 'video/x-ms-wvx',
+        'avi' => 'video/x-msvideo',
+        'movie' => 'video/x-sgi-movie',
+        'smv' => 'video/x-smv',
+        'ice' => 'x-conference/x-cooltalk',
+    ];
+
+    /**
+     * Get the MIME type for a file based on the file's extension.
+     *
+     * @param  string  $filename
+     * @return string
+     */
+    public static function from($filename)
+    {
+        $extension = pathinfo($filename, PATHINFO_EXTENSION);
+
+        return collect(self::$mimes)->get($extension, 'application/octet-stream');
+    }
+}
diff --git a/src/Illuminate/Http/UploadedFile.php b/src/Illuminate/Http/UploadedFile.php
index 52288a9c3860..f07e326cddd8 100644
--- a/src/Illuminate/Http/UploadedFile.php
+++ b/src/Illuminate/Http/UploadedFile.php
@@ -12,6 +12,16 @@ class UploadedFile extends SymfonyUploadedFile
 {
     use FileHelpers, Macroable;
 
+    /**
+     * Begin creating a new file fake.
+     *
+     * @return \Illuminate\Http\Testing\FileFactory
+     */
+    public static function fake()
+    {
+        return new Testing\FileFactory;
+    }
+
     /**
      * Store the uploaded file on a filesystem disk.
      *
diff --git a/src/Illuminate/Support/Facades/Storage.php b/src/Illuminate/Support/Facades/Storage.php
index 1a845561b4ec..485abaa7dffe 100644
--- a/src/Illuminate/Support/Facades/Storage.php
+++ b/src/Illuminate/Support/Facades/Storage.php
@@ -2,11 +2,28 @@
 
 namespace Illuminate\Support\Facades;
 
+use Illuminate\Filesystem\Filesystem;
+
 /**
  * @see \Illuminate\Filesystem\FilesystemManager
  */
 class Storage extends Facade
 {
+    /**
+     * Replace the given disk with a local, testing disk.
+     *
+     * @param  string  $disk
+     * @return void
+     */
+    public static function fake($disk)
+    {
+        (new Filesystem)->cleanDirectory(
+            $root = storage_path('framework/testing/disks/'.$disk)
+        );
+
+        static::set($disk, self::createLocalDriver(['root' => $root]));
+    }
+
     /**
      * Get the registered name of the component.
      *