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Add UniqueFactory for creating random string or int from given range
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| <?php | ||
|
|
||
| declare(strict_types=1); | ||
|
|
||
| namespace Flow\ETL; | ||
|
|
||
| class UniqueFactory | ||
| { | ||
| public static function int(int $min, int $max) : int | ||
| { | ||
| return \random_int($min, $max); | ||
| } | ||
|
|
||
| /** @param int<1, max> $int */ | ||
| public static function string(int $int) : string | ||
| { | ||
| $bytes = (int) \ceil($int / 2); | ||
| $bytes >= 1 ?: $bytes = 1; | ||
|
|
||
| return \mb_substr(\bin2hex(\random_bytes($bytes)), 0, \max(0, $int)); | ||
| } | ||
| } |
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84 changes: 84 additions & 0 deletions
84
src/core/etl/tests/Flow/ETL/Tests/Unit/UniqueFactoryTest.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| <?php | ||
|
|
||
| declare(strict_types=1); | ||
|
|
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| namespace Flow\ETL\Tests\Unit; | ||
|
|
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| use Flow\ETL\UniqueFactory; | ||
| use PHPUnit\Framework\TestCase; | ||
|
|
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| final class UniqueFactoryTest extends TestCase | ||
| { | ||
| public static function integers_provider() : \Generator | ||
| { | ||
| foreach (range(1, 10) as $i) { | ||
| yield [$i]; | ||
| } | ||
| } | ||
|
|
||
| public static function invalid_range_provider() : array | ||
| { | ||
| return [ | ||
| 'min greater than max' => [2, 1], | ||
| ]; | ||
| } | ||
|
|
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| public static function valid_range_provider() : array | ||
| { | ||
| return [ | ||
| 'min equal to max' => [1, 1], | ||
| 'min less than max' => [1, 2], | ||
| 'min less than zero' => [-1, 1], | ||
| 'max and min less than zero' => [-1, -1], | ||
| ]; | ||
| } | ||
|
|
||
| public function test_can_create_random_int_from_given_range() : void | ||
| { | ||
| self::assertSame(1, (UniqueFactory::int(1, 1))); | ||
| self::assertThat( | ||
| UniqueFactory::int(1, 2), | ||
| self::logicalOr( | ||
| self::equalTo(1), | ||
| self::equalTo(2) | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| /** @dataProvider integers_provider */ | ||
| public function test_can_create_random_string_with_given_length(int $expectedLength) : void | ||
| { | ||
| self::assertSame($expectedLength, mb_strlen(UniqueFactory::string($expectedLength))); | ||
| } | ||
|
|
||
| /** @dataProvider invalid_range_provider */ | ||
| public function test_fail_on_invalid_range(int $min, int $max) : void | ||
| { | ||
| self::expectException(\ValueError::class); | ||
| UniqueFactory::int($min, $max); | ||
| } | ||
|
|
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| /** @dataProvider valid_range_provider */ | ||
| public function test_return_random_int_on_valid_range(int $min, int $max) : void | ||
| { | ||
| self::assertThat( | ||
| UniqueFactory::int($min, $max), | ||
| self::logicalOr( | ||
| self::greaterThanOrEqual($min), | ||
| self::lessThanOrEqual($max) | ||
| ) | ||
| ); | ||
| } | ||
|
|
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| public function test_empty_string_on_length_below_1() | ||
| { | ||
| self::assertSame( | ||
| '', | ||
| UniqueFactory::string(0) | ||
| ); | ||
| self::assertSame( | ||
| '', | ||
| UniqueFactory::string(-1) | ||
| ); | ||
| } | ||
| } |
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