--- /dev/null
+<?php
+/**
+ * External Store tests
+ */
+
+class ExternalStoreTest extends MediaWikiTestCase {
+
+ /**
+ * @covers ExternalStore::fetchFromURL
+ */
+ public function testExternalFetchFromURL() {
+ $this->setMwGlobals( 'wgExternalStores', false );
+
+ $this->assertFalse(
+ ExternalStore::fetchFromURL( 'FOO://cluster1/200' ),
+ 'Deny if wgExternalStores is not set to a non-empty array'
+ );
+
+ $this->setMwGlobals( 'wgExternalStores', [ 'FOO' ] );
+
+ $this->assertEquals(
+ ExternalStore::fetchFromURL( 'FOO://cluster1/200' ),
+ 'Hello',
+ 'Allow FOO://cluster1/200'
+ );
+ $this->assertEquals(
+ ExternalStore::fetchFromURL( 'FOO://cluster1/300/0' ),
+ 'Hello',
+ 'Allow FOO://cluster1/300/0'
+ );
+ # Assertions for r68900
+ $this->assertFalse(
+ ExternalStore::fetchFromURL( 'ftp.example.org' ),
+ 'Deny domain ftp.example.org'
+ );
+ $this->assertFalse(
+ ExternalStore::fetchFromURL( '/example.txt' ),
+ 'Deny path /example.txt'
+ );
+ $this->assertFalse(
+ ExternalStore::fetchFromURL( 'http://' ),
+ 'Deny protocol http://'
+ );
+ }
+}
+
+class ExternalStoreFOO {
+
+ protected $data = [
+ 'cluster1' => [
+ '200' => 'Hello',
+ '300' => [
+ 'Hello', 'World',
+ ],
+ ],
+ ];
+
+ /**
+ * Fetch data from given URL
+ * @param string $url An url of the form FOO://cluster/id or FOO://cluster/id/itemid.
+ * @return mixed
+ */
+ function fetchFromURL( $url ) {
+ // Based on ExternalStoreDB
+ $path = explode( '/', $url );
+ $cluster = $path[2];
+ $id = $path[3];
+ if ( isset( $path[4] ) ) {
+ $itemID = $path[4];
+ } else {
+ $itemID = false;
+ }
+
+ if ( !isset( $this->data[$cluster][$id] ) ) {
+ return null;
+ }
+
+ if ( $itemID !== false
+ && is_array( $this->data[$cluster][$id] )
+ && isset( $this->data[$cluster][$id][$itemID] )
+ ) {
+ return $this->data[$cluster][$id][$itemID];
+ }
+
+ return $this->data[$cluster][$id];
+ }
+}