ApiBaseTest.php

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<?php
 
use Wikimedia\TestingAccessWrapper;
 
class ApiBaseTest extends ApiTestCase {
    public function testStubMethods( $expected, $method, $args = [] ) {
        // Some of these are protected
        $mock = TestingAccessWrapper::newFromObject( new MockApi() );
        $result = call_user_func_array( [ $mock, $method ], $args );
        $this->assertSame( $expected, $result );
    }
 
    public function provideStubMethods() {
        return [
            [ null, 'getModuleManager' ],
            [ null, 'getCustomPrinter' ],
            [ [], 'getHelpUrls' ],
            // @todo This is actually overriden by MockApi
            // [ [], 'getAllowedParams' ],
            [ true, 'shouldCheckMaxLag' ],
            [ true, 'isReadMode' ],
            [ false, 'isWriteMode' ],
            [ false, 'mustBePosted' ],
            [ false, 'isDeprecated' ],
            [ false, 'isInternal' ],
            [ false, 'needsToken' ],
            [ null, 'getWebUITokenSalt', [ [] ] ],
            [ null, 'getConditionalRequestData', [ 'etag' ] ],
            [ null, 'dynamicParameterDocumentation' ],
        ];
    }
 
    public function testRequireOnlyOneParameterDefault() {
        $mock = new MockApi();
        $mock->requireOnlyOneParameter(
            [ "filename" => "foo.txt", "enablechunks" => false ],
            "filename", "enablechunks"
        );
        $this->assertTrue( true );
    }
 
    public function testRequireOnlyOneParameterZero() {
        $mock = new MockApi();
        $mock->requireOnlyOneParameter(
            [ "filename" => "foo.txt", "enablechunks" => 0 ],
            "filename", "enablechunks"
        );
    }
 
    public function testRequireOnlyOneParameterTrue() {
        $mock = new MockApi();
        $mock->requireOnlyOneParameter(
            [ "filename" => "foo.txt", "enablechunks" => true ],
            "filename", "enablechunks"
        );
    }
 
    public function testRequireOnlyOneParameterMissing() {
        $this->setExpectedException( ApiUsageException::class,
            'One of the parameters "foo" and "bar" is required.' );
        $mock = new MockApi();
        $mock->requireOnlyOneParameter(
            [ "filename" => "foo.txt", "enablechunks" => false ],
            "foo", "bar" );
    }
 
    public function testRequireMaxOneParameterZero() {
        $mock = new MockApi();
        $mock->requireMaxOneParameter(
            [ 'foo' => 'bar', 'baz' => 'quz' ],
            'squirrel' );
        $this->assertTrue( true );
    }
 
    public function testRequireMaxOneParameterOne() {
        $mock = new MockApi();
        $mock->requireMaxOneParameter(
            [ 'foo' => 'bar', 'baz' => 'quz' ],
            'foo', 'squirrel' );
        $this->assertTrue( true );
    }
 
    public function testRequireMaxOneParameterTwo() {
        $this->setExpectedException( ApiUsageException::class,
            'The parameters "foo" and "baz" can not be used together.' );
        $mock = new MockApi();
        $mock->requireMaxOneParameter(
            [ 'foo' => 'bar', 'baz' => 'quz' ],
            'foo', 'baz' );
    }
 
    public function testRequireAtLeastOneParameterZero() {
        $this->setExpectedException( ApiUsageException::class,
            'At least one of the parameters "foo" and "bar" is required.' );
        $mock = new MockApi();
        $mock->requireAtLeastOneParameter(
            [ 'a' => 'b', 'c' => 'd' ],
            'foo', 'bar' );
    }
 
    public function testRequireAtLeastOneParameterOne() {
        $mock = new MockApi();
        $mock->requireAtLeastOneParameter(
            [ 'a' => 'b', 'c' => 'd' ],
            'foo', 'a' );
        $this->assertTrue( true );
    }
 
    public function testRequireAtLeastOneParameterTwo() {
        $mock = new MockApi();
        $mock->requireAtLeastOneParameter(
            [ 'a' => 'b', 'c' => 'd' ],
            'a', 'c' );
        $this->assertTrue( true );
    }
 
    public function testGetTitleOrPageIdBadParams() {
        $this->setExpectedException( ApiUsageException::class,
            'The parameters "title" and "pageid" can not be used together.' );
        $mock = new MockApi();
        $mock->getTitleOrPageId( [ 'title' => 'a', 'pageid' => 7 ] );
    }
 
    public function testGetTitleOrPageIdTitle() {
        $mock = new MockApi();
        $result = $mock->getTitleOrPageId( [ 'title' => 'Foo' ] );
        $this->assertInstanceOf( WikiPage::class, $result );
        $this->assertSame( 'Foo', $result->getTitle()->getPrefixedText() );
    }
 
    public function testGetTitleOrPageIdInvalidTitle() {
        $this->setExpectedException( ApiUsageException::class,
            'Bad title "|".' );
        $mock = new MockApi();
        $mock->getTitleOrPageId( [ 'title' => '|' ] );
    }
 
    public function testGetTitleOrPageIdSpecialTitle() {
        $this->setExpectedException( ApiUsageException::class,
            "Namespace doesn't allow actual pages." );
        $mock = new MockApi();
        $mock->getTitleOrPageId( [ 'title' => 'Special:RandomPage' ] );
    }
 
    public function testGetTitleOrPageIdPageId() {
        $page = $this->getExistingTestPage();
        $result = ( new MockApi() )->getTitleOrPageId(
            [ 'pageid' => $page->getId() ] );
        $this->assertInstanceOf( WikiPage::class, $result );
        $this->assertSame(
            $page->getTitle()->getPrefixedText(),
            $result->getTitle()->getPrefixedText()
        );
    }
 
    public function testGetTitleOrPageIdInvalidPageId() {
        // FIXME: fails under postgres
        $this->markTestSkippedIfDbType( 'postgres' );
 
        $this->setExpectedException( ApiUsageException::class,
            'There is no page with ID 2147483648.' );
        $mock = new MockApi();
        $mock->getTitleOrPageId( [ 'pageid' => 2147483648 ] );
    }
 
    public function testGetTitleFromTitleOrPageIdBadParams() {
        $this->setExpectedException( ApiUsageException::class,
            'The parameters "title" and "pageid" can not be used together.' );
        $mock = new MockApi();
        $mock->getTitleFromTitleOrPageId( [ 'title' => 'a', 'pageid' => 7 ] );
    }
 
    public function testGetTitleFromTitleOrPageIdTitle() {
        $mock = new MockApi();
        $result = $mock->getTitleFromTitleOrPageId( [ 'title' => 'Foo' ] );
        $this->assertInstanceOf( Title::class, $result );
        $this->assertSame( 'Foo', $result->getPrefixedText() );
    }
 
    public function testGetTitleFromTitleOrPageIdInvalidTitle() {
        $this->setExpectedException( ApiUsageException::class,
            'Bad title "|".' );
        $mock = new MockApi();
        $mock->getTitleFromTitleOrPageId( [ 'title' => '|' ] );
    }
 
    public function testGetTitleFromTitleOrPageIdPageId() {
        $page = $this->getExistingTestPage();
        $result = ( new MockApi() )->getTitleFromTitleOrPageId(
            [ 'pageid' => $page->getId() ] );
        $this->assertInstanceOf( Title::class, $result );
        $this->assertSame( $page->getTitle()->getPrefixedText(), $result->getPrefixedText() );
    }
 
    public function testGetTitleFromTitleOrPageIdInvalidPageId() {
        $this->setExpectedException( ApiUsageException::class,
            'There is no page with ID 298401643.' );
        $mock = new MockApi();
        $mock->getTitleFromTitleOrPageId( [ 'pageid' => 298401643 ] );
    }
 
    public function testGetParameter() {
        $mock = $this->getMockBuilder( MockApi::class )
            ->setMethods( [ 'getAllowedParams' ] )
            ->getMock();
        $mock->method( 'getAllowedParams' )->willReturn( [
            'foo' => [
                ApiBase::PARAM_TYPE => [ 'value' ],
            ],
            'bar' => [
                ApiBase::PARAM_TYPE => [ 'value' ],
            ],
        ] );
        $wrapper = TestingAccessWrapper::newFromObject( $mock );
 
        $context = new DerivativeContext( $mock );
        $context->setRequest( new FauxRequest( [ 'foo' => 'bad', 'bar' => 'value' ] ) );
        $wrapper->mMainModule = new ApiMain( $context );
 
        // Even though 'foo' is bad, getParameter( 'bar' ) must not fail
        $this->assertSame( 'value', $wrapper->getParameter( 'bar' ) );
 
        // But getParameter( 'foo' ) must throw.
        try {
            $wrapper->getParameter( 'foo' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $ex ) {
            $this->assertTrue( $this->apiExceptionHasCode( $ex, 'unknown_foo' ) );
        }
 
        // And extractRequestParams() must throw too.
        try {
            $mock->extractRequestParams();
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $ex ) {
            $this->assertTrue( $this->apiExceptionHasCode( $ex, 'unknown_foo' ) );
        }
    }
 
    private function doGetParameterFromSettings(
        $input, $paramSettings, $expected, $warnings, $options = []
    ) {
        $mock = new MockApi();
        $wrapper = TestingAccessWrapper::newFromObject( $mock );
        if ( $options['prefix'] ) {
            $wrapper->mModulePrefix = 'my';
            $paramName = 'Param';
        } else {
            $paramName = 'myParam';
        }
 
        $context = new DerivativeContext( $mock );
        $context->setRequest( new FauxRequest(
            $input !== null ? [ 'myParam' => $input ] : [] ) );
        $wrapper->mMainModule = new ApiMain( $context );
 
        $parseLimits = $options['parseLimits'] ?? true;
 
        if ( !empty( $options['apihighlimits'] ) ) {
            $context->setUser( self::$users['sysop']->getUser() );
        }
 
        if ( isset( $options['internalmode'] ) && !$options['internalmode'] ) {
            $mainWrapper = TestingAccessWrapper::newFromObject( $wrapper->mMainModule );
            $mainWrapper->mInternalMode = false;
        }
 
        // If we're testing tags, set up some tags
        if ( isset( $paramSettings[ApiBase::PARAM_TYPE] ) &&
            $paramSettings[ApiBase::PARAM_TYPE] === 'tags'
        ) {
            ChangeTags::defineTag( 'tag1' );
            ChangeTags::defineTag( 'tag2' );
        }
 
        if ( $expected instanceof Exception ) {
            try {
                $wrapper->getParameterFromSettings( $paramName, $paramSettings,
                    $parseLimits );
                $this->fail( 'No exception thrown' );
            } catch ( Exception $ex ) {
                $this->assertEquals( $expected, $ex );
            }
        } else {
            $result = $wrapper->getParameterFromSettings( $paramName,
                $paramSettings, $parseLimits );
            if ( isset( $paramSettings[ApiBase::PARAM_TYPE] ) &&
                $paramSettings[ApiBase::PARAM_TYPE] === 'timestamp' &&
                $expected === 'now'
            ) {
                // Allow one second of fuzziness.  Make sure the formats are
                // correct!
                $this->assertRegExp( '/^\d{14}$/', $result );
                $this->assertLessThanOrEqual( 1,
                    abs( wfTimestamp( TS_UNIX, $result ) - time() ),
                    "Result $result differs from expected $expected by " .
                    'more than one second' );
            } else {
                $this->assertSame( $expected, $result );
            }
            $actualWarnings = array_map( function ( $warn ) {
                return $warn instanceof Message
                    ? array_merge( [ $warn->getKey() ], $warn->getParams() )
                    : $warn;
            }, $mock->warnings );
            $this->assertSame( $warnings, $actualWarnings );
        }
 
        if ( !empty( $paramSettings[ApiBase::PARAM_SENSITIVE] ) ||
            ( isset( $paramSettings[ApiBase::PARAM_TYPE] ) &&
            $paramSettings[ApiBase::PARAM_TYPE] === 'password' )
        ) {
            $mainWrapper = TestingAccessWrapper::newFromObject( $wrapper->getMain() );
            $this->assertSame( [ 'myParam' ],
                $mainWrapper->getSensitiveParams() );
        }
    }
 
    public function testGetParameterFromSettings_noprefix(
        $input, $paramSettings, $expected, $warnings, $options = []
    ) {
        $options['prefix'] = false;
        $this->doGetParameterFromSettings( $input, $paramSettings, $expected, $warnings, $options );
    }
 
    public function testGetParameterFromSettings_prefix(
        $input, $paramSettings, $expected, $warnings, $options = []
    ) {
        $options['prefix'] = true;
        $this->doGetParameterFromSettings( $input, $paramSettings, $expected, $warnings, $options );
    }
 
    public static function provideGetParameterFromSettings() {
        $warnings = [
            [ 'apiwarn-badutf8', 'myParam' ],
        ];
 
        $c0 = '';
        $enc = '';
        for ( $i = 0; $i < 32; $i++ ) {
            $c0 .= chr( $i );
            $enc .= ( $i === 9 || $i === 10 || $i === 13 )
                ? chr( $i )
                : '�';
        }
 
        $returnArray = [
            'Basic param' => [ 'bar', null, 'bar', [] ],
            'Basic param, C0 controls' => [ $c0, null, $enc, $warnings ],
            'String param' => [ 'bar', '', 'bar', [] ],
            'String param, defaulted' => [ null, '', '', [] ],
            'String param, empty' => [ '', 'default', '', [] ],
            'String param, required, empty' => [
                '',
                [ ApiBase::PARAM_DFLT => 'default', ApiBase::PARAM_REQUIRED => true ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-missingparam', 'myParam' ] ),
                []
            ],
            'Multi-valued parameter' => [
                'a|b|c',
                [ ApiBase::PARAM_ISMULTI => true ],
                [ 'a', 'b', 'c' ],
                []
            ],
            'Multi-valued parameter, alternative separator' => [
                "\x1fa|b\x1fc|d",
                [ ApiBase::PARAM_ISMULTI => true ],
                [ 'a|b', 'c|d' ],
                []
            ],
            'Multi-valued parameter, other C0 controls' => [
                $c0,
                [ ApiBase::PARAM_ISMULTI => true ],
                [ $enc ],
                $warnings
            ],
            'Multi-valued parameter, other C0 controls (2)' => [
                "\x1f" . $c0,
                [ ApiBase::PARAM_ISMULTI => true ],
                [ substr( $enc, 0, -3 ), '' ],
                $warnings
            ],
            'Multi-valued parameter with limits' => [
                'a|b|c',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ISMULTI_LIMIT1 => 3,
                ],
                [ 'a', 'b', 'c' ],
                [],
            ],
            'Multi-valued parameter with exceeded limits' => [
                'a|b|c',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ISMULTI_LIMIT1 => 2,
                ],
                ApiUsageException::newWithMessage(
                    null, [ 'apierror-toomanyvalues', 'myParam', 2 ], 'too-many-myParam'
                ),
                []
            ],
            'Multi-valued parameter with exceeded limits for non-bot' => [
                'a|b|c',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ISMULTI_LIMIT1 => 2,
                    ApiBase::PARAM_ISMULTI_LIMIT2 => 3,
                ],
                ApiUsageException::newWithMessage(
                    null, [ 'apierror-toomanyvalues', 'myParam', 2 ], 'too-many-myParam'
                ),
                []
            ],
            'Multi-valued parameter with non-exceeded limits for bot' => [
                'a|b|c',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ISMULTI_LIMIT1 => 2,
                    ApiBase::PARAM_ISMULTI_LIMIT2 => 3,
                ],
                [ 'a', 'b', 'c' ],
                [],
                [ 'apihighlimits' => true ],
            ],
            'Multi-valued parameter with prohibited duplicates' => [
                'a|b|a|c',
                [ ApiBase::PARAM_ISMULTI => true ],
                // Note that the keys are not sequential!  This matches
                // array_unique, but might be unexpected.
                [ 0 => 'a', 1 => 'b', 3 => 'c' ],
                [],
            ],
            'Multi-valued parameter with allowed duplicates' => [
                'a|a',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ALLOW_DUPLICATES => true,
                ],
                [ 'a', 'a' ],
                [],
            ],
            'Empty boolean param' => [
                '',
                [ ApiBase::PARAM_TYPE => 'boolean' ],
                true,
                [],
            ],
            'Boolean param 0' => [
                '0',
                [ ApiBase::PARAM_TYPE => 'boolean' ],
                true,
                [],
            ],
            'Boolean param false' => [
                'false',
                [ ApiBase::PARAM_TYPE => 'boolean' ],
                true,
                [],
            ],
            'Boolean multi-param' => [
                'true|false',
                [
                    ApiBase::PARAM_TYPE => 'boolean',
                    ApiBase::PARAM_ISMULTI => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'Multi-values not supported for myParam'
                ),
                [],
            ],
            'Empty boolean param with non-false default' => [
                '',
                [
                    ApiBase::PARAM_TYPE => 'boolean',
                    ApiBase::PARAM_DFLT => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    "Boolean param myParam's default is set to '1'. " .
                    'Boolean parameters must default to false.' ),
                [],
            ],
            'Deprecated parameter' => [
                'foo',
                [ ApiBase::PARAM_DEPRECATED => true ],
                'foo',
                [ [ 'apiwarn-deprecation-parameter', 'myParam' ] ],
            ],
            'Deprecated parameter with default, unspecified' => [
                null,
                [ ApiBase::PARAM_DEPRECATED => true, ApiBase::PARAM_DFLT => 'foo' ],
                'foo',
                [],
            ],
            'Deprecated parameter with default, specified' => [
                'foo',
                [ ApiBase::PARAM_DEPRECATED => true, ApiBase::PARAM_DFLT => 'foo' ],
                'foo',
                [ [ 'apiwarn-deprecation-parameter', 'myParam' ] ],
            ],
            'Deprecated parameter value' => [
                'a',
                [ ApiBase::PARAM_DEPRECATED_VALUES => [ 'a' => true ] ],
                'a',
                [ [ 'apiwarn-deprecation-parameter', 'myParam=a' ] ],
            ],
            'Deprecated parameter value as default, unspecified' => [
                null,
                [ ApiBase::PARAM_DEPRECATED_VALUES => [ 'a' => true ], ApiBase::PARAM_DFLT => 'a' ],
                'a',
                [],
            ],
            'Deprecated parameter value as default, specified' => [
                'a',
                [ ApiBase::PARAM_DEPRECATED_VALUES => [ 'a' => true ], ApiBase::PARAM_DFLT => 'a' ],
                'a',
                [ [ 'apiwarn-deprecation-parameter', 'myParam=a' ] ],
            ],
            'Multiple deprecated parameter values' => [
                'a|b|c|d',
                [ ApiBase::PARAM_DEPRECATED_VALUES =>
                    [ 'b' => true, 'd' => true ],
                    ApiBase::PARAM_ISMULTI => true ],
                [ 'a', 'b', 'c', 'd' ],
                [
                    [ 'apiwarn-deprecation-parameter', 'myParam=b' ],
                    [ 'apiwarn-deprecation-parameter', 'myParam=d' ],
                ],
            ],
            'Deprecated parameter value with custom warning' => [
                'a',
                [ ApiBase::PARAM_DEPRECATED_VALUES => [ 'a' => 'my-msg' ] ],
                'a',
                [ 'my-msg' ],
            ],
            '"*" when wildcard not allowed' => [
                '*',
                [ ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => [ 'a', 'b', 'c' ] ],
                [],
                [ [ 'apiwarn-unrecognizedvalues', 'myParam',
                    [ 'list' => [ '&#42;' ], 'type' => 'comma' ], 1 ] ],
            ],
            'Wildcard "*"' => [
                '*',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => [ 'a', 'b', 'c' ],
                    ApiBase::PARAM_ALL => true,
                ],
                [ 'a', 'b', 'c' ],
                [],
            ],
            'Wildcard "*" with multiples not allowed' => [
                '*',
                [
                    ApiBase::PARAM_TYPE => [ 'a', 'b', 'c' ],
                    ApiBase::PARAM_ALL => true,
                ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-unrecognizedvalue', 'myParam', '&#42;' ],
                    'unknown_myParam' ),
                [],
            ],
            'Wildcard "*" with unrestricted type' => [
                '*',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_ALL => true,
                ],
                [ '*' ],
                [],
            ],
            'Wildcard "x"' => [
                'x',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => [ 'a', 'b', 'c' ],
                    ApiBase::PARAM_ALL => 'x',
                ],
                [ 'a', 'b', 'c' ],
                [],
            ],
            'Wildcard conflicting with allowed value' => [
                'a',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => [ 'a', 'b', 'c' ],
                    ApiBase::PARAM_ALL => 'a',
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'For param myParam, PARAM_ALL collides with a possible ' .
                    'value' ),
                [],
            ],
            'Namespace with wildcard' => [
                '*',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'namespace',
                ],
                MWNamespace::getValidNamespaces(),
                [],
            ],
            // PARAM_ALL is ignored with namespace types.
            'Namespace with wildcard suppressed' => [
                '*',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'namespace',
                    ApiBase::PARAM_ALL => false,
                ],
                MWNamespace::getValidNamespaces(),
                [],
            ],
            'Namespace with wildcard "x"' => [
                'x',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'namespace',
                    ApiBase::PARAM_ALL => 'x',
                ],
                [],
                [ [ 'apiwarn-unrecognizedvalues', 'myParam',
                    [ 'list' => [ 'x' ], 'type' => 'comma' ], 1 ] ],
            ],
            'Password' => [
                'dDy+G?e?txnr.1:(@[Ru',
                [ ApiBase::PARAM_TYPE => 'password' ],
                'dDy+G?e?txnr.1:(@[Ru',
                [],
            ],
            'Sensitive field' => [
                'I am fond of pineapples',
                [ ApiBase::PARAM_SENSITIVE => true ],
                'I am fond of pineapples',
                [],
            ],
            'Upload with default' => [
                '',
                [
                    ApiBase::PARAM_TYPE => 'upload',
                    ApiBase::PARAM_DFLT => '',
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    "File upload param myParam's default is set to ''. " .
                    'File upload parameters may not have a default.' ),
                [],
            ],
            'Multiple upload' => [
                '',
                [
                    ApiBase::PARAM_TYPE => 'upload',
                    ApiBase::PARAM_ISMULTI => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'Multi-values not supported for myParam' ),
                [],
            ],
            // @todo Test actual upload
            'Namespace -1' => [
                '-1',
                [ ApiBase::PARAM_TYPE => 'namespace' ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-unrecognizedvalue', 'myParam', '-1' ],
                    'unknown_myParam' ),
                [],
            ],
            'Extra namespace -1' => [
                '-1',
                [
                    ApiBase::PARAM_TYPE => 'namespace',
                    ApiBase::PARAM_EXTRA_NAMESPACES => [ '-1' ],
                ],
                '-1',
                [],
            ],
            // @todo Test with PARAM_SUBMODULE_MAP unset, need
            // getModuleManager() to return something real
            'Nonexistent module' => [
                'not-a-module-name',
                [
                    ApiBase::PARAM_TYPE => 'submodule',
                    ApiBase::PARAM_SUBMODULE_MAP =>
                        [ 'foo' => 'foo', 'bar' => 'foo+bar' ],
                ],
                ApiUsageException::newWithMessage(
                    null,
                    [
                        'apierror-unrecognizedvalue',
                        'myParam',
                        'not-a-module-name',
                    ],
                    'unknown_myParam'
                ),
                [],
            ],
            '\\x1f with multiples not allowed' => [
                "\x1f",
                [],
                ApiUsageException::newWithMessage( null,
                    'apierror-badvalue-notmultivalue',
                    'badvalue_notmultivalue' ),
                [],
            ],
            'Integer with unenforced min' => [
                '-2',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => -1,
                ],
                -1,
                [ [ 'apierror-integeroutofrange-belowminimum', 'myParam', -1,
                    -2 ] ],
            ],
            'Integer with enforced min' => [
                '-2',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => -1,
                    ApiBase::PARAM_RANGE_ENFORCE => true,
                ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-integeroutofrange-belowminimum', 'myParam',
                    '-1', '-2' ], 'integeroutofrange',
                    [ 'min' => -1, 'max' => null, 'botMax' => null ] ),
                [],
            ],
            'Integer with unenforced max (internal mode)' => [
                '8',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MAX => 7,
                ],
                8,
                [],
            ],
            'Integer with enforced max (internal mode)' => [
                '8',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MAX => 7,
                    ApiBase::PARAM_RANGE_ENFORCE => true,
                ],
                8,
                [],
            ],
            'Integer with unenforced max (non-internal mode)' => [
                '8',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MAX => 7,
                ],
                7,
                [ [ 'apierror-integeroutofrange-abovemax', 'myParam', 7, 8 ] ],
                [ 'internalmode' => false ],
            ],
            'Integer with enforced max (non-internal mode)' => [
                '8',
                [
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MAX => 7,
                    ApiBase::PARAM_RANGE_ENFORCE => true,
                ],
                ApiUsageException::newWithMessage(
                    null,
                    [ 'apierror-integeroutofrange-abovemax', 'myParam', '7', '8' ],
                    'integeroutofrange',
                    [ 'min' => null, 'max' => 7, 'botMax' => 7 ]
                ),
                [],
                [ 'internalmode' => false ],
            ],
            'Array of integers' => [
                '3|12|966|-1',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'integer',
                ],
                [ 3, 12, 966, -1 ],
                [],
            ],
            'Array of integers with unenforced min/max (internal mode)' => [
                '3|12|966|-1',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => 0,
                    ApiBase::PARAM_MAX => 100,
                ],
                [ 3, 12, 966, 0 ],
                [ [ 'apierror-integeroutofrange-belowminimum', 'myParam', 0, -1 ] ],
            ],
            'Array of integers with enforced min/max (internal mode)' => [
                '3|12|966|-1',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => 0,
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_RANGE_ENFORCE => true,
                ],
                ApiUsageException::newWithMessage(
                    null,
                    [ 'apierror-integeroutofrange-belowminimum', 'myParam', 0, -1 ],
                    'integeroutofrange',
                    [ 'min' => 0, 'max' => 100, 'botMax' => 100 ]
                ),
                [],
            ],
            'Array of integers with unenforced min/max (non-internal mode)' => [
                '3|12|966|-1',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => 0,
                    ApiBase::PARAM_MAX => 100,
                ],
                [ 3, 12, 100, 0 ],
                [
                    [ 'apierror-integeroutofrange-abovemax', 'myParam', 100, 966 ],
                    [ 'apierror-integeroutofrange-belowminimum', 'myParam', 0, -1 ]
                ],
                [ 'internalmode' => false ],
            ],
            'Array of integers with enforced min/max (non-internal mode)' => [
                '3|12|966|-1',
                [
                    ApiBase::PARAM_ISMULTI => true,
                    ApiBase::PARAM_TYPE => 'integer',
                    ApiBase::PARAM_MIN => 0,
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_RANGE_ENFORCE => true,
                ],
                ApiUsageException::newWithMessage(
                    null,
                    [ 'apierror-integeroutofrange-abovemax', 'myParam', 100, 966 ],
                    'integeroutofrange',
                    [ 'min' => 0, 'max' => 100, 'botMax' => 100 ]
                ),
                [],
                [ 'internalmode' => false ],
            ],
            'Limit with parseLimits false' => [
                '100',
                [ ApiBase::PARAM_TYPE => 'limit' ],
                '100',
                [],
                [ 'parseLimits' => false ],
            ],
            'Limit with no max' => [
                '100',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX2 => 10,
                    ApiBase::PARAM_ISMULTI => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'MAX1 or MAX2 are not defined for the limit myParam' ),
                [],
            ],
            'Limit with no max2' => [
                '100',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 10,
                    ApiBase::PARAM_ISMULTI => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'MAX1 or MAX2 are not defined for the limit myParam' ),
                [],
            ],
            'Limit with multi-value' => [
                '100',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 10,
                    ApiBase::PARAM_MAX2 => 10,
                    ApiBase::PARAM_ISMULTI => true,
                ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    'Multi-values not supported for myParam' ),
                [],
            ],
            'Valid limit' => [
                '100',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 100,
                ],
                100,
                [],
            ],
            'Limit max' => [
                'max',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                100,
                [],
            ],
            'Limit max for apihighlimits' => [
                'max',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                101,
                [],
                [ 'apihighlimits' => true ],
            ],
            'Limit too large (internal mode)' => [
                '101',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                101,
                [],
            ],
            'Limit okay for apihighlimits (internal mode)' => [
                '101',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                101,
                [],
                [ 'apihighlimits' => true ],
            ],
            'Limit too large for apihighlimits (internal mode)' => [
                '102',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                102,
                [],
                [ 'apihighlimits' => true ],
            ],
            'Limit too large (non-internal mode)' => [
                '101',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                100,
                [ [ 'apierror-integeroutofrange-abovemax', 'myParam', 100, 101 ] ],
                [ 'internalmode' => false ],
            ],
            'Limit okay for apihighlimits (non-internal mode)' => [
                '101',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                101,
                [],
                [ 'internalmode' => false, 'apihighlimits' => true ],
            ],
            'Limit too large for apihighlimits (non-internal mode)' => [
                '102',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 101,
                ],
                101,
                [ [ 'apierror-integeroutofrange-abovebotmax', 'myParam', 101, 102 ] ],
                [ 'internalmode' => false, 'apihighlimits' => true ],
            ],
            'Limit too small' => [
                '-2',
                [
                    ApiBase::PARAM_TYPE => 'limit',
                    ApiBase::PARAM_MIN => -1,
                    ApiBase::PARAM_MAX => 100,
                    ApiBase::PARAM_MAX2 => 100,
                ],
                -1,
                [ [ 'apierror-integeroutofrange-belowminimum', 'myParam', -1,
                    -2 ] ],
            ],
            'Timestamp' => [
                wfTimestamp( TS_UNIX, '20211221122112' ),
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                '20211221122112',
                [],
            ],
            'Timestamp 0' => [
                '0',
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                // Magic keyword
                'now',
                [ [ 'apiwarn-unclearnowtimestamp', 'myParam', '0' ] ],
            ],
            'Timestamp empty' => [
                '',
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                'now',
                [ [ 'apiwarn-unclearnowtimestamp', 'myParam', '' ] ],
            ],
            // wfTimestamp() interprets this as Unix time
            'Timestamp 00' => [
                '00',
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                '19700101000000',
                [],
            ],
            'Timestamp now' => [
                'now',
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                'now',
                [],
            ],
            'Invalid timestamp' => [
                'a potato',
                [ ApiBase::PARAM_TYPE => 'timestamp' ],
                ApiUsageException::newWithMessage(
                    null,
                    [ 'apierror-badtimestamp', 'myParam', 'a potato' ],
                    'badtimestamp_myParam'
                ),
                [],
            ],
            'Timestamp array' => [
                '100|101',
                [
                    ApiBase::PARAM_TYPE => 'timestamp',
                    ApiBase::PARAM_ISMULTI => 1,
                ],
                [ wfTimestamp( TS_MW, 100 ), wfTimestamp( TS_MW, 101 ) ],
                [],
            ],
            'User' => [
                'foo_bar',
                [ ApiBase::PARAM_TYPE => 'user' ],
                'Foo bar',
                [],
            ],
            'User prefixed with "User:"' => [
                'User:foo_bar',
                [ ApiBase::PARAM_TYPE => 'user' ],
                'Foo bar',
                [],
            ],
            'Invalid username "|"' => [
                '|',
                [ ApiBase::PARAM_TYPE => 'user' ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-baduser', 'myParam', '&#124;' ],
                    'baduser_myParam' ),
                [],
            ],
            'Invalid username "300.300.300.300"' => [
                '300.300.300.300',
                [ ApiBase::PARAM_TYPE => 'user' ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-baduser', 'myParam', '300.300.300.300' ],
                    'baduser_myParam' ),
                [],
            ],
            'IP range as username' => [
                '10.0.0.0/8',
                [ ApiBase::PARAM_TYPE => 'user' ],
                '10.0.0.0/8',
                [],
            ],
            'IPv6 as username' => [
                '::1',
                [ ApiBase::PARAM_TYPE => 'user' ],
                '0:0:0:0:0:0:0:1',
                [],
            ],
            'Obsolete cloaked usemod IP address as username' => [
                '1.2.3.xxx',
                [ ApiBase::PARAM_TYPE => 'user' ],
                '1.2.3.xxx',
                [],
            ],
            'Invalid username containing IP address' => [
                'This is [not] valid 1.2.3.xxx, ha!',
                [ ApiBase::PARAM_TYPE => 'user' ],
                ApiUsageException::newWithMessage(
                    null,
                    [ 'apierror-baduser', 'myParam', 'This is &#91;not&#93; valid 1.2.3.xxx, ha!' ],
                    'baduser_myParam'
                ),
                [],
            ],
            'External username' => [
                'M>Foo bar',
                [ ApiBase::PARAM_TYPE => 'user' ],
                'M>Foo bar',
                [],
            ],
            'Array of usernames' => [
                'foo|bar',
                [
                    ApiBase::PARAM_TYPE => 'user',
                    ApiBase::PARAM_ISMULTI => true,
                ],
                [ 'Foo', 'Bar' ],
                [],
            ],
            'tag' => [
                'tag1',
                [ ApiBase::PARAM_TYPE => 'tags' ],
                [ 'tag1' ],
                [],
            ],
            'Array of one tag' => [
                'tag1',
                [
                    ApiBase::PARAM_TYPE => 'tags',
                    ApiBase::PARAM_ISMULTI => true,
                ],
                [ 'tag1' ],
                [],
            ],
            'Array of tags' => [
                'tag1|tag2',
                [
                    ApiBase::PARAM_TYPE => 'tags',
                    ApiBase::PARAM_ISMULTI => true,
                ],
                [ 'tag1', 'tag2' ],
                [],
            ],
            'Invalid tag' => [
                'invalid tag',
                [ ApiBase::PARAM_TYPE => 'tags' ],
                new ApiUsageException( null,
                    Status::newFatal( 'tags-apply-not-allowed-one',
                    'invalid tag', 1 ) ),
                [],
            ],
            'Unrecognized type' => [
                'foo',
                [ ApiBase::PARAM_TYPE => 'nonexistenttype' ],
                new MWException(
                    'Internal error in ApiBase::getParameterFromSettings: ' .
                    "Param myParam's type is unknown - nonexistenttype" ),
                [],
            ],
            'Too many bytes' => [
                '1',
                [
                    ApiBase::PARAM_MAX_BYTES => 0,
                    ApiBase::PARAM_MAX_CHARS => 0,
                ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-maxbytes', 'myParam', 0 ] ),
                [],
            ],
            'Too many chars' => [
                '§§',
                [
                    ApiBase::PARAM_MAX_BYTES => 4,
                    ApiBase::PARAM_MAX_CHARS => 1,
                ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-maxchars', 'myParam', 1 ] ),
                [],
            ],
            'Omitted required param' => [
                null,
                [ ApiBase::PARAM_REQUIRED => true ],
                ApiUsageException::newWithMessage( null,
                    [ 'apierror-missingparam', 'myParam' ] ),
                [],
            ],
            'Empty multi-value' => [
                '',
                [ ApiBase::PARAM_ISMULTI => true ],
                [],
                [],
            ],
            'Multi-value \x1f' => [
                "\x1f",
                [ ApiBase::PARAM_ISMULTI => true ],
                [],
                [],
            ],
            'Allowed non-multi-value with "|"' => [
                'a|b',
                [ ApiBase::PARAM_TYPE => [ 'a|b' ] ],
                'a|b',
                [],
            ],
            'Prohibited multi-value' => [
                'a|b',
                [ ApiBase::PARAM_TYPE => [ 'a', 'b' ] ],
                ApiUsageException::newWithMessage( null,
                    [
                        'apierror-multival-only-one-of',
                        'myParam',
                        Message::listParam( [ '<kbd>a</kbd>', '<kbd>b</kbd>' ] ),
                        2
                    ],
                    'multival_myParam'
                ),
                [],
            ],
        ];
 
        // The following really just test PHP's string-to-int conversion.
        $integerTests = [
            [ '+1', 1 ],
            [ '-1', -1 ],
            [ '1.5', 1 ],
            [ '-1.5', -1 ],
            [ '1abc', 1 ],
            [ ' 1', 1 ],
            [ "\t1", 1, '\t1' ],
            [ "\r1", 1, '\r1' ],
            [ "\f1", 0, '\f1', 'badutf-8' ],
            [ "\n1", 1, '\n1' ],
            [ "\v1", 0, '\v1', 'badutf-8' ],
            [ "\e1", 0, '\e1', 'badutf-8' ],
            [ "\x001", 0, '\x001', 'badutf-8' ],
        ];
 
        foreach ( $integerTests as $test ) {
            $desc = $test[2] ?? $test[0];
            $warnings = isset( $test[3] ) ?
                [ [ 'apiwarn-badutf8', 'myParam' ] ] : [];
            $returnArray["\"$desc\" as integer"] = [
                $test[0],
                [ ApiBase::PARAM_TYPE => 'integer' ],
                $test[1],
                $warnings,
            ];
        }
 
        return $returnArray;
    }
 
    public function testErrorArrayToStatus() {
        $mock = new MockApi();
 
        $msg = new Message( 'mainpage' );
 
        // Sanity check empty array
        $expect = Status::newGood();
        $this->assertEquals( $expect, $mock->errorArrayToStatus( [] ) );
 
        // No blocked $user, so no special block handling
        $expect = Status::newGood();
        $expect->fatal( 'blockedtext' );
        $expect->fatal( 'autoblockedtext' );
        $expect->fatal( 'systemblockedtext' );
        $expect->fatal( 'mainpage' );
        $expect->fatal( $msg );
        $expect->fatal( $msg, 'foobar' );
        $expect->fatal( 'parentheses', 'foobar' );
        $this->assertEquals( $expect, $mock->errorArrayToStatus( [
            [ 'blockedtext' ],
            [ 'autoblockedtext' ],
            [ 'systemblockedtext' ],
            'mainpage',
            $msg,
            [ $msg, 'foobar' ],
            [ 'parentheses', 'foobar' ],
        ] ) );
 
        // Has a blocked $user, so special block handling
        $user = $this->getMutableTestUser()->getUser();
        $block = new \Block( [
            'address' => $user->getName(),
            'user' => $user->getID(),
            'by' => $this->getTestSysop()->getUser()->getId(),
            'reason' => __METHOD__,
            'expiry' => time() + 100500,
        ] );
        $block->insert();
        $blockinfo = [ 'blockinfo' => ApiQueryUserInfo::getBlockInfo( $block ) ];
 
        $expect = Status::newGood();
        $expect->fatal( ApiMessage::create( 'apierror-blocked', 'blocked', $blockinfo ) );
        $expect->fatal( ApiMessage::create( 'apierror-autoblocked', 'autoblocked', $blockinfo ) );
        $expect->fatal( ApiMessage::create( 'apierror-systemblocked', 'blocked', $blockinfo ) );
        $expect->fatal( 'mainpage' );
        $expect->fatal( $msg );
        $expect->fatal( $msg, 'foobar' );
        $expect->fatal( 'parentheses', 'foobar' );
        $this->assertEquals( $expect, $mock->errorArrayToStatus( [
            [ 'blockedtext' ],
            [ 'autoblockedtext' ],
            [ 'systemblockedtext' ],
            'mainpage',
            $msg,
            [ $msg, 'foobar' ],
            [ 'parentheses', 'foobar' ],
        ], $user ) );
    }
 
    public function testAddBlockInfoToStatus() {
        $mock = new MockApi();
 
        $msg = new Message( 'mainpage' );
 
        // Sanity check empty array
        $expect = Status::newGood();
        $test = Status::newGood();
        $mock->addBlockInfoToStatus( $test );
        $this->assertEquals( $expect, $test );
 
        // No blocked $user, so no special block handling
        $expect = Status::newGood();
        $expect->fatal( 'blockedtext' );
        $expect->fatal( 'autoblockedtext' );
        $expect->fatal( 'systemblockedtext' );
        $expect->fatal( 'mainpage' );
        $expect->fatal( $msg );
        $expect->fatal( $msg, 'foobar' );
        $expect->fatal( 'parentheses', 'foobar' );
        $test = clone $expect;
        $mock->addBlockInfoToStatus( $test );
        $this->assertEquals( $expect, $test );
 
        // Has a blocked $user, so special block handling
        $user = $this->getMutableTestUser()->getUser();
        $block = new \Block( [
            'address' => $user->getName(),
            'user' => $user->getID(),
            'by' => $this->getTestSysop()->getUser()->getId(),
            'reason' => __METHOD__,
            'expiry' => time() + 100500,
        ] );
        $block->insert();
        $blockinfo = [ 'blockinfo' => ApiQueryUserInfo::getBlockInfo( $block ) ];
 
        $expect = Status::newGood();
        $expect->fatal( ApiMessage::create( 'apierror-blocked', 'blocked', $blockinfo ) );
        $expect->fatal( ApiMessage::create( 'apierror-autoblocked', 'autoblocked', $blockinfo ) );
        $expect->fatal( ApiMessage::create( 'apierror-systemblocked', 'blocked', $blockinfo ) );
        $expect->fatal( 'mainpage' );
        $expect->fatal( $msg );
        $expect->fatal( $msg, 'foobar' );
        $expect->fatal( 'parentheses', 'foobar' );
        $test = Status::newGood();
        $test->fatal( 'blockedtext' );
        $test->fatal( 'autoblockedtext' );
        $test->fatal( 'systemblockedtext' );
        $test->fatal( 'mainpage' );
        $test->fatal( $msg );
        $test->fatal( $msg, 'foobar' );
        $test->fatal( 'parentheses', 'foobar' );
        $mock->addBlockInfoToStatus( $test, $user );
        $this->assertEquals( $expect, $test );
    }
 
    public function testDieStatus() {
        $mock = new MockApi();
 
        $status = StatusValue::newGood();
        $status->error( 'foo' );
        $status->warning( 'bar' );
        try {
            $mock->dieStatus( $status );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $ex ) {
            $this->assertTrue( ApiTestCase::apiExceptionHasCode( $ex, 'foo' ), 'Exception has "foo"' );
            $this->assertFalse( ApiTestCase::apiExceptionHasCode( $ex, 'bar' ), 'Exception has "bar"' );
        }
 
        $status = StatusValue::newGood();
        $status->warning( 'foo' );
        $status->warning( 'bar' );
        try {
            $mock->dieStatus( $status );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $ex ) {
            $this->assertTrue( ApiTestCase::apiExceptionHasCode( $ex, 'foo' ), 'Exception has "foo"' );
            $this->assertTrue( ApiTestCase::apiExceptionHasCode( $ex, 'bar' ), 'Exception has "bar"' );
        }
 
        $status = StatusValue::newGood();
        $status->setOk( false );
        try {
            $mock->dieStatus( $status );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $ex ) {
            $this->assertTrue( ApiTestCase::apiExceptionHasCode( $ex, 'unknownerror-nocode' ),
                'Exception has "unknownerror-nocode"' );
        }
    }
 
    public function testExtractRequestParams() {
        $request = new FauxRequest( [
            'xxexists' => 'exists!',
            'xxmulti' => 'a|b|c|d|{bad}',
            'xxempty' => '',
            'xxtemplate-a' => 'A!',
            'xxtemplate-b' => 'B1|B2|B3',
            'xxtemplate-c' => '',
            'xxrecursivetemplate-b-B1' => 'X',
            'xxrecursivetemplate-b-B3' => 'Y',
            'xxrecursivetemplate-b-B4' => '?',
            'xxemptytemplate-' => 'nope',
            'foo' => 'a|b|c',
            'xxfoo' => 'a|b|c',
            'errorformat' => 'raw',
        ] );
        $context = new DerivativeContext( RequestContext::getMain() );
        $context->setRequest( $request );
        $main = new ApiMain( $context );
 
        $mock = $this->getMockBuilder( ApiBase::class )
            ->setConstructorArgs( [ $main, 'test', 'xx' ] )
            ->setMethods( [ 'getAllowedParams' ] )
            ->getMockForAbstractClass();
        $mock->method( 'getAllowedParams' )->willReturn( [
            'notexists' => null,
            'exists' => null,
            'multi' => [
                ApiBase::PARAM_ISMULTI => true,
            ],
            'empty' => [
                ApiBase::PARAM_ISMULTI => true,
            ],
            'template-{m}' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TEMPLATE_VARS => [ 'm' => 'multi' ],
            ],
            'recursivetemplate-{m}-{t}' => [
                ApiBase::PARAM_TEMPLATE_VARS => [ 't' => 'template-{m}', 'm' => 'multi' ],
            ],
            'emptytemplate-{m}' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TEMPLATE_VARS => [ 'm' => 'empty' ],
            ],
            'badtemplate-{e}' => [
                ApiBase::PARAM_TEMPLATE_VARS => [ 'e' => 'exists' ],
            ],
            'badtemplate2-{e}' => [
                ApiBase::PARAM_TEMPLATE_VARS => [ 'e' => 'badtemplate2-{e}' ],
            ],
            'badtemplate3-{x}' => [
                ApiBase::PARAM_TEMPLATE_VARS => [ 'x' => 'foo' ],
            ],
        ] );
 
        $this->assertEquals( [
            'notexists' => null,
            'exists' => 'exists!',
            'multi' => [ 'a', 'b', 'c', 'd', '{bad}' ],
            'empty' => [],
            'template-a' => [ 'A!' ],
            'template-b' => [ 'B1', 'B2', 'B3' ],
            'template-c' => [],
            'template-d' => null,
            'recursivetemplate-a-A!' => null,
            'recursivetemplate-b-B1' => 'X',
            'recursivetemplate-b-B2' => null,
            'recursivetemplate-b-B3' => 'Y',
        ], $mock->extractRequestParams() );
 
        $used = TestingAccessWrapper::newFromObject( $main )->getParamsUsed();
        sort( $used );
        $this->assertEquals( [
            'xxempty',
            'xxexists',
            'xxmulti',
            'xxnotexists',
            'xxrecursivetemplate-a-A!',
            'xxrecursivetemplate-b-B1',
            'xxrecursivetemplate-b-B2',
            'xxrecursivetemplate-b-B3',
            'xxtemplate-a',
            'xxtemplate-b',
            'xxtemplate-c',
            'xxtemplate-d',
        ], $used );
 
        $warnings = $mock->getResult()->getResultData( 'warnings', [ 'Strip' => 'all' ] );
        $this->assertCount( 1, $warnings );
        $this->assertSame( 'ignoring-invalid-templated-value', $warnings[0]['code'] );
    }
 
}