put('foo', 'bar', 10); $this->assertNull($store->get('foo')); } public function testGetMultipleReturnsMultipleNulls() { $store = new NullStore; $this->assertEquals([ 'foo' => null, 'bar' => null, ], $store->many([ 'foo', 'bar', ])); } public function testIncrementAndDecrementReturnFalse() { $store = new NullStore; $this->assertFalse($store->increment('foo')); $this->assertFalse($store->decrement('foo')); } }