Functional\Tests\UniqueTest::testDefaultBehavior PHP Method

    public function testDefaultBehavior()
    {
        $this->assertSame([0 => 'value1', 1 => 'value2', 3 => 'value'], unique($this->list));
        $this->assertSame([0 => 'value1', 1 => 'value2', 3 => 'value'], unique($this->listIterator));
        $this->assertSame(['k1' => 'val1', 'k2' => 'val2'], unique($this->hash));
        $this->assertSame(['k1' => 'val1', 'k2' => 'val2'], unique($this->hashIterator));
        $fn = function ($value, $key, $collection) {
            return $value;
        };
        $this->assertSame([0 => 'value1', 1 => 'value2', 3 => 'value'], unique($this->list, $fn));
        $this->assertSame([0 => 'value1', 1 => 'value2', 3 => 'value'], unique($this->listIterator, $fn));
        $this->assertSame(['k1' => 'val1', 'k2' => 'val2'], unique($this->hash, $fn));
        $this->assertSame(['k1' => 'val1', 'k2' => 'val2'], unique($this->hashIterator, $fn));
    }