[QueryBuilder] divide support

Author: faissaloux

src/Query/Builder.php

@@ -911,6 +911,12 @@ public function multiply($column, $amount = 1, array $extra = [], array $options
         return $this->performUpdate($query, $options);
     }
 
+    /** @inheritdoc */
+    public function divide($column, $amount = 1, array $extra = [], array $options = [])
+    {
+        return $this->multiply($column, 1 / $amount, $extra, $options);
+    }
+
     /** @inheritdoc */
     public function pluck($column, $key = null)
     {

tests/QueryBuilderTest.php

@@ -1052,36 +1052,49 @@ public function testIncrement()
         $this->assertEquals(1, $user->age);
     }
 
-    public function testMultiply()
+    public function testMultiplyAndDivide()
     {
         DB::table('users')->insert([
-            ['name' => 'John Doe', 'salary' => 3000, 'note' => 'adult'],
-            ['name' => 'Jane Doe', 'salary' => 1000, 'note' => 'minor'],
+            ['name' => 'John Doe', 'salary' => 88000, 'note' => 'senior'],
+            ['name' => 'Jane Doe', 'salary' => 64000, 'note' => 'junior'],
             ['name' => 'Robert Roe', 'salary' => null],
             ['name' => 'Mark Moe'],
         ]);
 
         $user = DB::table('users')->where('name', 'John Doe')->first();
-        $this->assertEquals(3000, $user->salary);
+        $this->assertEquals(88000, $user->salary);
 
         DB::table('users')->where('name', 'John Doe')->multiply('salary');
         $user = DB::table('users')->where('name', 'John Doe')->first();
-        $this->assertEquals(3000, $user->salary);
+        $this->assertEquals(88000, $user->salary);
+
+        DB::table('users')->where('name', 'John Doe')->divide('salary');
+        $user = DB::table('users')->where('name', 'John Doe')->first();
+        $this->assertEquals(88000, $user->salary);
 
         DB::table('users')->where('name', 'John Doe')->multiply('salary', 2);
         $user = DB::table('users')->where('name', 'John Doe')->first();
-        $this->assertEquals(6000, $user->salary);
+        $this->assertEquals(176000, $user->salary);
+
+        DB::table('users')->where('name', 'John Doe')->divide('salary', 2);
+        $user = DB::table('users')->where('name', 'John Doe')->first();
+        $this->assertEquals(88000, $user->salary);
 
-        DB::table('users')->where('name', 'Jane Doe')->multiply('salary', 10, ['note' => 'adult']);
+        DB::table('users')->where('name', 'Jane Doe')->multiply('salary', 10, ['note' => 'senior']);
         $user = DB::table('users')->where('name', 'Jane Doe')->first();
-        $this->assertEquals(10000, $user->salary);
-        $this->assertEquals('adult', $user->note);
+        $this->assertEquals(640000, $user->salary);
+        $this->assertEquals('senior', $user->note);
+
+        DB::table('users')->where('name', 'John Doe')->divide('salary', 2, ['note' => 'junior']);
+        $user = DB::table('users')->where('name', 'John Doe')->first();
+        $this->assertEquals(44000, $user->salary);
+        $this->assertEquals('junior', $user->note);
 
         DB::table('users')->multiply('salary');
         $user = DB::table('users')->where('name', 'John Doe')->first();
-        $this->assertEquals(6000, $user->salary);
+        $this->assertEquals(44000, $user->salary);
         $user = DB::table('users')->where('name', 'Jane Doe')->first();
-        $this->assertEquals(10000, $user->salary);
+        $this->assertEquals(640000, $user->salary);
         $user = DB::table('users')->where('name', 'Robert Roe')->first();
         $this->assertNull($user->salary);
         $user = DB::table('users')->where('name', 'Mark Moe')->first();