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GoFeatureFlagProviderTest.php
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<?php
declare(strict_types=1);
namespace OpenFeature\Providers\GoFeatureFlag\Test\unit;
use GuzzleHttp\Psr7\Response;
use OpenFeature\OpenFeatureAPI;
use OpenFeature\Providers\GoFeatureFlag\GoFeatureFlagProvider;
use OpenFeature\Providers\GoFeatureFlag\Test\TestCase;
use OpenFeature\Providers\GoFeatureFlag\config\Config;
use OpenFeature\Providers\GoFeatureFlag\exception\InvalidConfigException;
use OpenFeature\implementation\flags\Attributes;
use OpenFeature\implementation\flags\MutableEvaluationContext;
use OpenFeature\interfaces\flags\EvaluationContext;
use OpenFeature\interfaces\provider\ErrorCode;
use OpenFeature\interfaces\provider\Reason;
use PHPUnit\Framework\MockObject\MockObject;
use Psr\Http\Client\ClientInterface;
use ReflectionClass;
use ReflectionException;
use function PHPUnit\Framework\assertEquals;
use function json_decode;
use function json_encode;
class GoFeatureFlagProviderTest extends TestCase
{
private EvaluationContext $defaultEvaluationContext;
public function testShouldThrowIfInvalidEndpoint(): void
{
$this->expectException(InvalidConfigException::class);
new GoFeatureFlagProvider(
new Config('invalid'),
);
}
// Configuration validation tests
public function testShouldNotThrowIfValidEndpoint(): void
{
$provider = new GoFeatureFlagProvider(
new Config('https://gofeatureflag.org'),
);
$this->assertInstanceOf(GoFeatureFlagProvider::class, $provider);
}
public function testShouldRaiseIfEndpointIsNotHttp(): void
{
$this->expectException(InvalidConfigException::class);
$provider = new GoFeatureFlagProvider(
new Config('gofeatureflag.org'),
);
$this->assertInstanceOf(GoFeatureFlagProvider::class, $provider);
}
public function testEmptyEndpointShouldThrow(): void
{
$this->expectException(InvalidConfigException::class);
new GoFeatureFlagProvider(
new Config(''),
);
}
public function testMetadataNameIsDefined(): void
{
$config = new Config('http://localhost:1031');
$provider = new GoFeatureFlagProvider($config);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
assertEquals('GO Feature Flag Provider', $api->getProviderMetadata()->getName());
}
// Metadata tests
public function testShouldReturnTheValueOfTheFlagAsInt(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getIntegerDetails('integer_key', 1, $this->defaultEvaluationContext);
assertEquals(42, $got->getValue());
assertEquals(Reason::TARGETING_MATCH, $got->getReason());
assertEquals('default', $got->getVariant());
assertEquals(null, $got->getError());
assertEquals('integer_key', $got->getFlagKey());
}
/**
* @throws ReflectionException
*/
private function mockHttpClient(GoFeatureFlagProvider $provider, MockObject $mockClient): void
{
$providerReflection = new ReflectionClass($provider);
$ofrepApiProperty = $providerReflection->getProperty('ofrepApi');
$ofrepApiProperty->setAccessible(true);
$ofrepApi = $ofrepApiProperty->getValue($provider);
$ofrepApiReflection = new ReflectionClass($ofrepApi);
$clientProperty = $ofrepApiReflection->getProperty('client');
$clientProperty->setAccessible(true);
$clientProperty->setValue($ofrepApi, $mockClient);
}
public function testShouldReturnTheValueOfTheFlagAsFloat(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'flag-key',
'value' => 42.2,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getFloatDetails('flag-key', 1.0, $this->defaultEvaluationContext);
assertEquals(42.2, $got->getValue());
assertEquals(Reason::TARGETING_MATCH, $got->getReason());
assertEquals('default', $got->getVariant());
assertEquals(null, $got->getError());
assertEquals('flag-key', $got->getFlagKey());
}
public function testShouldReturnTheValueOfTheFlagAsString(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'flag-key',
'value' => 'value as string',
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getStringDetails('flag-key', 'default', $this->defaultEvaluationContext);
assertEquals('value as string', $got->getValue());
assertEquals(Reason::TARGETING_MATCH, $got->getReason());
assertEquals('default', $got->getVariant());
assertEquals(null, $got->getError());
assertEquals('flag-key', $got->getFlagKey());
}
public function testShouldReturnTheValueOfTheFlagAsBool(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'flag-key',
'value' => true,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('flag-key', false, $this->defaultEvaluationContext);
assertEquals(true, $got->getValue());
assertEquals(Reason::TARGETING_MATCH, $got->getReason());
assertEquals('default', $got->getVariant());
assertEquals(null, $got->getError());
assertEquals('flag-key', $got->getFlagKey());
}
public function testShouldReturnTheValueOfTheFlagAsObject(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'flag-key',
'value' => ['value' => 'value as object'],
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getObjectDetails('flag-key', ['default' => true], $this->defaultEvaluationContext);
assertEquals(['value' => 'value as object'], $got->getValue());
assertEquals(Reason::TARGETING_MATCH, $got->getReason());
assertEquals('default', $got->getVariant());
assertEquals(null, $got->getError());
assertEquals('flag-key', $got->getFlagKey());
}
public function testShouldReturnTheDefaultValueIfFlagIsNotTheRightType(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('integer_key', false, $this->defaultEvaluationContext);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::TYPE_MISMATCH(), $got->getError()->getResolutionErrorCode());
assertEquals('Invalid type for integer_key, got integer expected boolean', $got->getError()->getResolutionErrorMessage());
assertEquals('integer_key', $got->getFlagKey());
}
public function testShouldReturnTheDefaultValueOfTheFlagIfErrorSendByTheAPIHttpCode403(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(403, [], json_encode([]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_key', false, $this->defaultEvaluationContext);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::GENERAL(), $got->getError()->getResolutionErrorCode());
assertEquals('Unauthorized access to the API', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_key', $got->getFlagKey());
}
public function testShouldReturnTheDefaultValueOfTheFlagIfErrorSendByTheAPIHttpCode400(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(400, [], json_encode([
'key' => 'integer_key',
'reason' => 'ERROR',
'errorCode' => 'INVALID_CONTEXT',
'errorDetails' => 'Error Details for invalid context',
]));
$mockClient->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_key', false, $this->defaultEvaluationContext);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::INVALID_CONTEXT(), $got->getError()->getResolutionErrorCode());
assertEquals('Error Details for invalid context', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_key', $got->getFlagKey());
}
public function testShouldReturnDefaultValueIfNoEvaluationContext(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_key', false);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::INVALID_CONTEXT(), $got->getError()->getResolutionErrorCode());
assertEquals('Missing targetingKey in evaluation context', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_key', $got->getFlagKey());
}
public function testShouldReturnDefaultValueIfEvaluationContextHasEmptyStringTargetingKey(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_key', false, new MutableEvaluationContext(''));
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::INVALID_CONTEXT(), $got->getError()->getResolutionErrorCode());
assertEquals('Missing targetingKey in evaluation context', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_key', $got->getFlagKey());
}
public function testShouldReturnDefaultValueIfEvaluationContextHasNullTargetingKey(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_key', false, new MutableEvaluationContext(null));
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::INVALID_CONTEXT(), $got->getError()->getResolutionErrorCode());
assertEquals('Missing targetingKey in evaluation context', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_key', $got->getFlagKey());
}
public function testShouldReturnDefaultValueIfFlagKeyEmptyString(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$mockClient->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('', false, $this->defaultEvaluationContext);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::GENERAL(), $got->getError()->getResolutionErrorCode());
assertEquals('An error occurred while evaluating the flag: Flag key is null or empty', $got->getError()->getResolutionErrorMessage());
assertEquals('', $got->getFlagKey());
}
public function testReturnAnErrorAPIResponseIf500(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(500, [], json_encode([]));
$mockClient
->expects($this->once())
->method('sendRequest')
->willReturn($mockResponse);
$config = new Config('http://gofeatureflag.org');
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$got = $client->getBooleanDetails('boolean_flag', false, $this->defaultEvaluationContext);
assertEquals(false, $got->getValue());
assertEquals(Reason::ERROR, $got->getReason());
assertEquals(null, $got->getVariant());
assertEquals(ErrorCode::GENERAL(), $got->getError()->getResolutionErrorCode());
assertEquals('Unknown error occurred', $got->getError()->getResolutionErrorMessage());
assertEquals('boolean_flag', $got->getFlagKey());
}
public function testShouldSendExporterMetadataInContext(): void
{
$mockClient = $this->createMock(ClientInterface::class);
$mockResponse = new Response(200, [], json_encode([
'key' => 'integer_key',
'value' => 42,
'reason' => 'TARGETING_MATCH',
'variant' => 'default',
]));
$requestBody = '';
$mockClient
->expects($this->once())
->method('sendRequest')
->willReturnCallback(function ($request) use ($mockResponse, &$requestBody) {
$requestBody = $request->getBody()->getContents();
return $mockResponse;
});
$config = new Config(
'http://gofeatureflag.org',
null,
[],
['key1' => 'value', 'key2' => 123, 'key3' => 123.45],
);
$provider = new GoFeatureFlagProvider($config);
$this->mockHttpClient($provider, $mockClient);
$api = OpenFeatureAPI::getInstance();
$api->setProvider($provider);
$client = $api->getClient();
$client->getBooleanDetails('boolean_flag', false, $this->defaultEvaluationContext);
// get the request body of the request received by the mock client
$want = ['key1' => 'value',
'key2' => 123,
'key3' => 123.45,
'openfeature' => true,
'provider' => 'php',
];
$got = json_decode($requestBody, true)['context']['gofeatureflag']['exporterMetadata'];
assertEquals($want, $got);
}
protected function setUp(): void
{
parent::setUp();
$this->defaultEvaluationContext = new MutableEvaluationContext('214b796a-807b-4697-b3a3-42de0ec10a37', new Attributes(['email' => '[email protected]']));
}
}