<?php

require_once('test.pb.php');
require_once('test_util.php');

use Google\Protobuf\Internal\RepeatedField;
use Google\Protobuf\Internal\GPBType;
use Foo\TestMessage;
use Foo\TestMessage_Sub;

class RepeatedFieldTest extends PHPUnit_Framework_TestCase
{

    #########################################################
    # Test int32 field.
    #########################################################

    public function testInt32()
    {
        $arr = new RepeatedField(GPBType::INT32);

        // Test append.
        $arr []= MAX_INT32;
        $this->assertSame(MAX_INT32, $arr[0]);
        $arr []= MIN_INT32;
        $this->assertSame(MIN_INT32, $arr[1]);

        $arr []= 1.1;
        $this->assertSame(1, $arr[2]);
        $arr []= MAX_INT32_FLOAT;
        $this->assertSame(MAX_INT32, $arr[3]);
        $arr []= MAX_INT32_FLOAT;
        $this->assertSame(MAX_INT32, $arr[4]);

        $arr []= '2';
        $this->assertSame(2, $arr[5]);
        $arr []= '3.1';
        $this->assertSame(3, $arr[6]);
        $arr []= MAX_INT32_STRING;
        $this->assertSame(MAX_INT32, $arr[7]);

        $this->assertEquals(8, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            $this->assertSame(0, $arr[$i]);
        }

        // Test set.
        $arr [0]= MAX_INT32;
        $this->assertSame(MAX_INT32, $arr[0]);
        $arr [1]= MIN_INT32;
        $this->assertSame(MIN_INT32, $arr[1]);

        $arr [2]= 1.1;
        $this->assertSame(1, $arr[2]);
        $arr [3]= MAX_INT32_FLOAT;
        $this->assertSame(MAX_INT32, $arr[3]);
        $arr [4]= MAX_INT32_FLOAT;
        $this->assertSame(MAX_INT32, $arr[4]);

        $arr [5]= '2';
        $this->assertSame(2, $arr[5]);
        $arr [6]= '3.1';
        $this->assertSame(3, $arr[6]);
        $arr [7]= MAX_INT32_STRING;
        $this->assertSame(MAX_INT32, $arr[7]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt32AppendStringFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt32SetStringFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt32AppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt32SetMessageFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test uint32 field.
    #########################################################

    public function testUint32()
    {
        $arr = new RepeatedField(GPBType::UINT32);

        // Test append.
        $arr []= MAX_UINT32;
        $this->assertSame(-1, $arr[0]);
        $arr []= -1;
        $this->assertSame(-1, $arr[1]);
        $arr []= MIN_UINT32;
        $this->assertSame(MIN_UINT32, $arr[2]);

        $arr []= 1.1;
        $this->assertSame(1, $arr[3]);
        $arr []= MAX_UINT32_FLOAT;
        $this->assertSame(-1, $arr[4]);
        $arr []= -1.0;
        $this->assertSame(-1, $arr[5]);
        $arr []= MIN_UINT32_FLOAT;
        $this->assertSame(MIN_UINT32, $arr[6]);

        $arr []= '2';
        $this->assertSame(2, $arr[7]);
        $arr []= '3.1';
        $this->assertSame(3, $arr[8]);
        $arr []= MAX_UINT32_STRING;
        $this->assertSame(-1, $arr[9]);
        $arr []= '-1.0';
        $this->assertSame(-1, $arr[10]);
        $arr []= MIN_UINT32_STRING;
        $this->assertSame(MIN_UINT32, $arr[11]);

        $this->assertEquals(12, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            $this->assertSame(0, $arr[$i]);
        }

        // Test set.
        $arr [0]= MAX_UINT32;
        $this->assertSame(-1, $arr[0]);
        $arr [1]= -1;
        $this->assertSame(-1, $arr[1]);
        $arr [2]= MIN_UINT32;
        $this->assertSame(MIN_UINT32, $arr[2]);

        $arr [3]= 1.1;
        $this->assertSame(1, $arr[3]);
        $arr [4]= MAX_UINT32_FLOAT;
        $this->assertSame(-1, $arr[4]);
        $arr [5]= -1.0;
        $this->assertSame(-1, $arr[5]);
        $arr [6]= MIN_UINT32_FLOAT;
        $this->assertSame(MIN_UINT32, $arr[6]);

        $arr [7]= '2';
        $this->assertSame(2, $arr[7]);
        $arr [8]= '3.1';
        $this->assertSame(3, $arr[8]);
        $arr [9]= MAX_UINT32_STRING;
        $this->assertSame(-1, $arr[9]);
        $arr [10]= '-1.0';
        $this->assertSame(-1, $arr[10]);
        $arr [11]= MIN_UINT32_STRING;
        $this->assertSame(MIN_UINT32, $arr[11]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint32AppendStringFail()
    {
        $arr = new RepeatedField(GPBType::UINT32);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint32SetStringFail()
    {
        $arr = new RepeatedField(GPBType::UINT32);
        $arr []= 0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint32AppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::UINT32);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint32SetMessageFail()
    {
        $arr = new RepeatedField(GPBType::UINT32);
        $arr []= 0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test int64 field.
    #########################################################

    public function testInt64()
    {
        $arr = new RepeatedField(GPBType::INT64);

        // Test append.
        $arr []= MAX_INT64;
        $arr []= MIN_INT64;
        $arr []= 1.1;
        $arr []= '2';
        $arr []= '3.1';
        $arr []= MAX_INT64_STRING;
        $arr []= MIN_INT64_STRING;
        if (PHP_INT_SIZE == 4) {
            $this->assertSame(MAX_INT64, $arr[0]);
            $this->assertSame(MIN_INT64, $arr[1]);
            $this->assertSame('1', $arr[2]);
            $this->assertSame('2', $arr[3]);
            $this->assertSame('3', $arr[4]);
            $this->assertSame(MAX_INT64_STRING, $arr[5]);
            $this->assertSame(MIN_INT64_STRING, $arr[6]);
        } else {
            $this->assertSame(MAX_INT64, $arr[0]);
            $this->assertSame(MIN_INT64, $arr[1]);
            $this->assertSame(1, $arr[2]);
            $this->assertSame(2, $arr[3]);
            $this->assertSame(3, $arr[4]);
            $this->assertSame(MAX_INT64, $arr[5]);
            $this->assertSame(MIN_INT64, $arr[6]);
        }


        $this->assertEquals(7, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            if (PHP_INT_SIZE == 4) {
                $this->assertSame('0', $arr[$i]);
            } else {
                $this->assertSame(0, $arr[$i]);
            }
        }

        // Test set.
        $arr [0]= MAX_INT64;
        $arr [1]= MIN_INT64;
        $arr [2]= 1.1;
        $arr [3]= '2';
        $arr [4]= '3.1';
        $arr [5]= MAX_INT64_STRING;
        $arr [6]= MIN_INT64_STRING;

        if (PHP_INT_SIZE == 4) {
            $this->assertSame(MAX_INT64_STRING, $arr[0]);
            $this->assertSame(MIN_INT64_STRING, $arr[1]);
            $this->assertSame('1', $arr[2]);
            $this->assertSame('2', $arr[3]);
            $this->assertSame('3', $arr[4]);
            $this->assertSame(MAX_INT64_STRING, $arr[5]);
            $this->assertEquals(MIN_INT64_STRING, $arr[6]);
        } else {
            $this->assertSame(MAX_INT64, $arr[0]);
            $this->assertSame(MIN_INT64, $arr[1]);
            $this->assertSame(1, $arr[2]);
            $this->assertSame(2, $arr[3]);
            $this->assertSame(3, $arr[4]);
            $this->assertSame(MAX_INT64, $arr[5]);
            $this->assertEquals(MIN_INT64, $arr[6]);
        }
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt64AppendStringFail()
    {
        $arr = new RepeatedField(GPBType::INT64);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt64SetStringFail()
    {
        $arr = new RepeatedField(GPBType::INT64);
        $arr []= 0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt64AppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::INT64);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testInt64SetMessageFail()
    {
        $arr = new RepeatedField(GPBType::INT64);
        $arr []= 0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test uint64 field.
    #########################################################

    public function testUint64()
    {
        $arr = new RepeatedField(GPBType::UINT64);

        // Test append.
        $arr []= MAX_UINT64;
        $arr []= 1.1;
        $arr []= '2';
        $arr []= '3.1';
        $arr []= MAX_UINT64_STRING;

        if (PHP_INT_SIZE == 4) {
            $this->assertSame(MAX_UINT64_STRING, $arr[0]);
            $this->assertSame('1', $arr[1]);
            $this->assertSame('2', $arr[2]);
            $this->assertSame('3', $arr[3]);
            $this->assertSame(MAX_UINT64_STRING, $arr[4]);
        } else {
            $this->assertSame(MAX_UINT64, $arr[0]);
            $this->assertSame(1, $arr[1]);
            $this->assertSame(2, $arr[2]);
            $this->assertSame(3, $arr[3]);
            $this->assertSame(MAX_UINT64, $arr[4]);
            $this->assertSame(5, count($arr));
        }

        $this->assertSame(5, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            if (PHP_INT_SIZE == 4) {
                $this->assertSame('0', $arr[$i]);
            } else {
                $this->assertSame(0, $arr[$i]);
            }
        }

        // Test set.
        $arr [0]= MAX_UINT64;
        $arr [1]= 1.1;
        $arr [2]= '2';
        $arr [3]= '3.1';
        $arr [4]= MAX_UINT64_STRING;

        if (PHP_INT_SIZE == 4) {
            $this->assertSame(MAX_UINT64_STRING, $arr[0]);
            $this->assertSame('1', $arr[1]);
            $this->assertSame('2', $arr[2]);
            $this->assertSame('3', $arr[3]);
            $this->assertSame(MAX_UINT64_STRING, $arr[4]);
        } else {
            $this->assertSame(MAX_UINT64, $arr[0]);
            $this->assertSame(1, $arr[1]);
            $this->assertSame(2, $arr[2]);
            $this->assertSame(3, $arr[3]);
            $this->assertSame(MAX_UINT64, $arr[4]);
        }
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint64AppendStringFail()
    {
        $arr = new RepeatedField(GPBType::UINT64);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint64SetStringFail()
    {
        $arr = new RepeatedField(GPBType::UINT64);
        $arr []= 0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint64AppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::UINT64);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testUint64SetMessageFail()
    {
        $arr = new RepeatedField(GPBType::UINT64);
        $arr []= 0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test float field.
    #########################################################

    public function testFloat()
    {
        $arr = new RepeatedField(GPBType::FLOAT);

        // Test append.
        $arr []= 1;
        $this->assertEquals(1.0, $arr[0], '', MAX_FLOAT_DIFF);

        $arr []= 1.1;
        $this->assertEquals(1.1, $arr[1], '', MAX_FLOAT_DIFF);

        $arr []= '2';
        $this->assertEquals(2.0, $arr[2], '', MAX_FLOAT_DIFF);
        $arr []= '3.1';
        $this->assertEquals(3.1, $arr[3], '', MAX_FLOAT_DIFF);

        $this->assertEquals(4, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            $this->assertSame(0.0, $arr[$i]);
        }

        // Test set.
        $arr [0]= 1;
        $this->assertEquals(1.0, $arr[0], '', MAX_FLOAT_DIFF);

        $arr [1]= 1.1;
        $this->assertEquals(1.1, $arr[1], '', MAX_FLOAT_DIFF);

        $arr [2]= '2';
        $this->assertEquals(2.0, $arr[2], '', MAX_FLOAT_DIFF);
        $arr [3]= '3.1';
        $this->assertEquals(3.1, $arr[3], '', MAX_FLOAT_DIFF);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testFloatAppendStringFail()
    {
        $arr = new RepeatedField(GPBType::FLOAT);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testFloatSetStringFail()
    {
        $arr = new RepeatedField(GPBType::FLOAT);
        $arr []= 0.0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testFloatAppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::FLOAT);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testFloatSetMessageFail()
    {
        $arr = new RepeatedField(GPBType::FLOAT);
        $arr []= 0.0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test double field.
    #########################################################

    public function testDouble()
    {
        $arr = new RepeatedField(GPBType::DOUBLE);

        // Test append.
        $arr []= 1;
        $this->assertEquals(1.0, $arr[0], '', MAX_FLOAT_DIFF);

        $arr []= 1.1;
        $this->assertEquals(1.1, $arr[1], '', MAX_FLOAT_DIFF);

        $arr []= '2';
        $this->assertEquals(2.0, $arr[2], '', MAX_FLOAT_DIFF);
        $arr []= '3.1';
        $this->assertEquals(3.1, $arr[3], '', MAX_FLOAT_DIFF);

        $this->assertEquals(4, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            $this->assertSame(0.0, $arr[$i]);
        }

        // Test set.
        $arr [0]= 1;
        $this->assertEquals(1.0, $arr[0], '', MAX_FLOAT_DIFF);

        $arr [1]= 1.1;
        $this->assertEquals(1.1, $arr[1], '', MAX_FLOAT_DIFF);

        $arr [2]= '2';
        $this->assertEquals(2.0, $arr[2], '', MAX_FLOAT_DIFF);
        $arr [3]= '3.1';
        $this->assertEquals(3.1, $arr[3], '', MAX_FLOAT_DIFF);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testDoubleAppendStringFail()
    {
        $arr = new RepeatedField(GPBType::DOUBLE);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testDoubleSetStringFail()
    {
        $arr = new RepeatedField(GPBType::DOUBLE);
        $arr []= 0.0;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testDoubleAppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::DOUBLE);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testDoubleSetMessageFail()
    {
        $arr = new RepeatedField(GPBType::DOUBLE);
        $arr []= 0.0;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test bool field.
    #########################################################

    public function testBool()
    {
        $arr = new RepeatedField(GPBType::BOOL);

        // Test append.
        $arr []= true;
        $this->assertSame(true, $arr[0]);

        $arr []= -1;
        $this->assertSame(true, $arr[1]);

        $arr []= 1.1;
        $this->assertSame(true, $arr[2]);

        $arr []= '';
        $this->assertSame(false, $arr[3]);

        $this->assertEquals(4, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = 0;
            $this->assertSame(false, $arr[$i]);
        }

        // Test set.
        $arr [0]= true;
        $this->assertSame(true, $arr[0]);

        $arr [1]= -1;
        $this->assertSame(true, $arr[1]);

        $arr [2]= 1.1;
        $this->assertSame(true, $arr[2]);

        $arr [3]= '';
        $this->assertSame(false, $arr[3]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testBoolAppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::BOOL);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testBoolSetMessageFail()
    {
        $arr = new RepeatedField(GPBType::BOOL);
        $arr []= true;
        $arr [0]= new TestMessage_Sub();
    }

    #########################################################
    # Test string field.
    #########################################################

    public function testString()
    {
        $arr = new RepeatedField(GPBType::STRING);

        // Test append.
        $arr []= 'abc';
        $this->assertSame('abc', $arr[0]);

        $arr []= 1;
        $this->assertSame('1', $arr[1]);

        $arr []= 1.1;
        $this->assertSame('1.1', $arr[2]);

        $arr []= true;
        $this->assertSame('1', $arr[3]);

        $this->assertEquals(4, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = '';
            $this->assertSame('', $arr[$i]);
        }

        // Test set.
        $arr [0]= 'abc';
        $this->assertSame('abc', $arr[0]);

        $arr [1]= 1;
        $this->assertSame('1', $arr[1]);

        $arr [2]= 1.1;
        $this->assertSame('1.1', $arr[2]);

        $arr [3]= true;
        $this->assertSame('1', $arr[3]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testStringAppendMessageFail()
    {
        $arr = new RepeatedField(GPBType::STRING);
        $arr []= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testStringSetMessageFail()
    {
        $arr = new RepeatedField(GPBType::STRING);
        $arr []= 'abc';
        $arr [0]= new TestMessage_Sub();
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testStringAppendInvalidUTF8Fail()
    {
        $arr = new RepeatedField(GPBType::STRING);
        $hex = hex2bin("ff");
        $arr []= $hex;
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testStringSetInvalidUTF8Fail()
    {
        $arr = new RepeatedField(GPBType::STRING);
        $arr []= 'abc';
        $hex = hex2bin("ff");
        $arr [0]= $hex;
    }

    #########################################################
    # Test message field.
    #########################################################

    public function testMessage()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);

        // Test append.
        $sub_m = new TestMessage_Sub();
        $sub_m->setA(1);
        $arr []= $sub_m;
        $this->assertSame(1, $arr[0]->getA());

        $null = null;
        $arr []= $null;
        $this->assertNull($arr[1]);

        $this->assertEquals(2, count($arr));

        for ($i = 0; $i < count($arr); $i++) {
            $arr[$i] = $null;
            $this->assertNull($arr[$i]);
        }

        // Test set.
        $arr [0]= $sub_m;
        $this->assertSame(1, $arr[0]->getA());

        $arr [1]= $null;
        $this->assertNull($arr[1]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageAppendIntFail()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);
        $arr []= 1;
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageSetIntFail()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);
        $arr []= new TestMessage_Sub;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageAppendStringFail()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);
        $arr []= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageSetStringFail()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);
        $arr []= new TestMessage_Sub;
        $arr [0]= 'abc';
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageAppendOtherMessageFail()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage_Sub::class);
        $arr []= new TestMessage;
    }

    #########################################################
    # Test offset type
    #########################################################

    public function testOffset()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 0;

        $arr [0]= 1;
        $this->assertSame(1, $arr[0]);
        $this->assertSame(1, count($arr));

        $arr ['0']= 2;
        $this->assertSame(2, $arr['0']);
        $this->assertSame(2, $arr[0]);
        $this->assertSame(1, count($arr));

        $arr [0.0]= 3;
        $this->assertSame(3, $arr[0.0]);
        $this->assertSame(1, count($arr));
    }

    public function testInsertRemoval()
    {
        $arr = new RepeatedField(GPBType::INT32);

        $arr []= 0;
        $arr []= 1;
        $arr []= 2;
        $this->assertSame(3, count($arr));

        unset($arr[2]);
        $this->assertSame(2, count($arr));
        $this->assertSame(0, $arr[0]);
        $this->assertSame(1, $arr[1]);

        $arr [] = 3;
        $this->assertSame(3, count($arr));
        $this->assertSame(0, $arr[0]);
        $this->assertSame(1, $arr[1]);
        $this->assertSame(3, $arr[2]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testRemoveMiddleFail()
    {
        $arr = new RepeatedField(GPBType::INT32);

        $arr []= 0;
        $arr []= 1;
        $arr []= 2;
        $this->assertSame(3, count($arr));

        unset($arr[1]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testRemoveEmptyFail()
    {
        $arr = new RepeatedField(GPBType::INT32);

        unset($arr[0]);
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testMessageOffsetFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 0;
        $arr [new TestMessage_Sub()]= 0;
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testStringOffsetFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr []= 0;
        $arr ['abc']= 0;
    }

    /**
     * @expectedException PHPUnit_Framework_Error
     */
    public function testSetNonExistedOffsetFail()
    {
        $arr = new RepeatedField(GPBType::INT32);
        $arr [0]= 0;
    }

    #########################################################
    # Test memory leak
    #########################################################

    public function testCycleLeak()
    {
        $arr = new RepeatedField(GPBType::MESSAGE, TestMessage::class);
        $arr []= new TestMessage;
        $arr[0]->SetRepeatedRecursive($arr);

        // Clean up memory before test.
        gc_collect_cycles();
        $start = memory_get_usage();
        unset($arr);

        // Explicitly trigger garbage collection.
        gc_collect_cycles();

        $end = memory_get_usage();
        $this->assertLessThan($start, $end);
    }
}