[Lock] Add some missing return types in tests

Author: nicolas-grekas

Tests/Store/AbstractRedisStoreTestCase.php

@@ -25,7 +25,7 @@ abstract class AbstractRedisStoreTestCase extends AbstractStoreTestCase
 {
     use ExpiringStoreTestTrait;
 
-    protected function getClockDelay()
+    protected function getClockDelay(): int
     {
         return 250000;
     }

Tests/Store/BlockingStoreTestTrait.php

@@ -22,10 +22,8 @@ trait BlockingStoreTestTrait
 {
     /**
      * @see AbstractStoreTestCase::getStore()
-     *
-     * @return PersistingStoreInterface
      */
-    abstract protected function getStore();
+    abstract protected function getStore(): PersistingStoreInterface;
 
     /**
      * Tests blocking locks thanks to pcntl.

Tests/Store/CombinedStoreTest.php

@@ -32,7 +32,7 @@ class CombinedStoreTest extends AbstractStoreTestCase
     use ExpiringStoreTestTrait;
     use SharedLockStoreTestTrait;
 
-    protected function getClockDelay()
+    protected function getClockDelay(): int
     {
         return 250000;
     }

Tests/Store/DoctrineDbalStoreTest.php

@@ -53,7 +53,7 @@ public static function tearDownAfterClass(): void
         @unlink(self::$dbFile);
     }
 
-    protected function getClockDelay()
+    protected function getClockDelay(): int
     {
         return 1000000;
     }

Tests/Store/ExpiringStoreTestTrait.php

@@ -24,10 +24,8 @@ trait ExpiringStoreTestTrait
      * Amount of microseconds used as a delay to test expiration. Should be
      * small enough not to slow the test suite too much, and high enough not to
      * fail because of race conditions.
-     *
-     * @return int
      */
-    abstract protected function getClockDelay();
+    abstract protected function getClockDelay(): int;
 
     /**
      * @see AbstractStoreTestCase::getStore()

Tests/Store/MemcachedStoreTest.php

@@ -44,7 +44,7 @@ public static function setUpBeforeClass(): void
         }
     }
 
-    protected function getClockDelay()
+    protected function getClockDelay(): int
     {
         return 1000000;
     }

Tests/Store/PdoStoreTest.php

@@ -42,7 +42,7 @@ public static function tearDownAfterClass(): void
         @unlink(self::$dbFile);
     }
 
-    protected function getClockDelay()
+    protected function getClockDelay(): int
     {
         return 1000000;
     }

Tests/Store/SharedLockStoreTestTrait.php

@@ -22,10 +22,8 @@ trait SharedLockStoreTestTrait
 {
     /**
      * @see AbstractStoreTestCase::getStore()
-     *
-     * @return PersistingStoreInterface
      */
-    abstract protected function getStore();
+    abstract protected function getStore(): PersistingStoreInterface;
 
     public function testSharedLockReadFirst()
     {

Tests/Store/UnserializableTestTrait.php

@@ -22,10 +22,8 @@ trait UnserializableTestTrait
 {
     /**
      * @see AbstractStoreTestCase::getStore()
-     *
-     * @return PersistingStoreInterface
      */
-    abstract protected function getStore();
+    abstract protected function getStore(): PersistingStoreInterface;
 
     public function testUnserializableKey()
     {