Add integration tests for eloquent aggregate functions (#44779)

Author: imanghafoori1

tests/Integration/Database/EloquentAggregateTest.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Illuminate\Tests\Integration\Database;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class EloquentAggregateTest extends DatabaseTestCase
+{
+    protected function defineDatabaseMigrationsAfterDatabaseRefreshed()
+    {
+        Schema::create('users', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('c');
+            $table->string('name');
+            $table->integer('balance')->nullable();
+        });
+    }
+
+    public function testMinMax()
+    {
+        UserAggregateTest::create(['c' => 1, 'name' => 'test-name1', 'balance' => -1]);
+        UserAggregateTest::create(['c' => 2, 'name' => 'test-name2', 'balance' => -1]);
+        UserAggregateTest::create(['c' => 3, 'name' => 'test-name3', 'balance' => 0]);
+        UserAggregateTest::create(['c' => 4, 'name' => 'test-name4', 'balance' => +1]);
+        UserAggregateTest::create(['c' => 5, 'name' => 'test-name5', 'balance' => +2]);
+        UserAggregateTest::create(['c' => 6, 'name' => 'test-name5', 'balance' => null]);
+
+        $this->assertEquals(-1, UserAggregateTest::query()->min('balance'));
+        $this->assertNull(UserAggregateTest::query()->where('name', 'no-name')->min('balance'));
+        $this->assertEquals(1, UserAggregateTest::query()->where('c', '>', 3)->min('balance'));
+
+        $this->assertEquals(2, UserAggregateTest::query()->max('balance'));
+        $this->assertNull(UserAggregateTest::query()->where('name', 'no-name')->max('balance'));
+        $this->assertEquals(0, UserAggregateTest::query()->where('c', '<', 4)->max('balance'));
+    }
+
+    public function testAvg()
+    {
+        UserAggregateTest::create(['c' => 1, 'name' => 'test-name1', 'balance' => -10]);
+        UserAggregateTest::create(['c' => 2, 'name' => 'test-name2', 'balance' => -10]);
+        UserAggregateTest::create(['c' => 3, 'name' => 'test-name3', 'balance' => 0]);
+        UserAggregateTest::create(['c' => 4, 'name' => 'test-name4', 'balance' => +10]);
+        UserAggregateTest::create(['c' => 5, 'name' => 'test-name5', 'balance' => +20]);
+        UserAggregateTest::create(['c' => 6, 'name' => 'test-name5', 'balance' => null]);
+
+        $this->assertEquals(2, UserAggregateTest::query()->avg('balance'));
+        $this->assertNull(UserAggregateTest::query()->where('name', 'no-name')->avg('balance'));
+        $this->assertEquals(15, UserAggregateTest::query()->where('c', '>', 3)->avg('balance'));
+
+        $this->assertEquals(2, UserAggregateTest::query()->average('balance'));
+        $this->assertNull(UserAggregateTest::query()->where('name', 'no-name')->average('balance'));
+        $this->assertEquals(-10, UserAggregateTest::query()->where('c', '<', 3)->average('balance'));
+    }
+
+    public function testSum()
+    {
+        UserAggregateTest::create(['c' => 1, 'name' => 'name-1', 'balance' => -11]);
+        UserAggregateTest::create(['c' => 2, 'name' => 'name-2', 'balance' => -10]);
+        UserAggregateTest::create(['c' => 3, 'name' => 'name-3', 'balance' => 0]);
+        UserAggregateTest::create(['c' => 4, 'name' => 'name-4', 'balance' => +12]);
+        UserAggregateTest::create(['c' => 5, 'name' => 'name-5', 'balance' => null]);
+
+        $this->assertEquals(-9, UserAggregateTest::query()->sum('balance'));
+        $result = UserAggregateTest::query()->where('name', 'no-name')->sum('balance');
+        $this->assertNotNull($result);
+        $this->assertEquals(0, $result);
+        $this->assertEquals(2, UserAggregateTest::query()->where('c', '>', 1)->sum('balance'));
+    }
+}
+
+class UserAggregateTest extends Model
+{
+    protected $table = 'users';
+    protected $fillable = ['name', 'c', 'balance'];
+    public $timestamps = false;
+}