public function test_aroundGetSelectCountSql() { /** === Test Data === */ $RESULT = $this->_mock(\Magento\Framework\DB\Select::class); /** === Setup Mocks === */ $mProceed = function () use($RESULT) { return $RESULT; }; // $this->_queryModGrid->modifySelect($result); $this->mQueryModGrid->shouldReceive('modifySelect')->once($RESULT); /** === Call and asserts === */ $res = $this->obj->aroundGetSelectCountSql($this->mSubject, $mProceed); $this->assertEquals($RESULT, $res); }