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SparqlUpdatePatchHandler.test.ts
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SparqlUpdatePatchHandler.test.ts
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import { namedNode, quad } from '@rdfjs/data-model';
import arrayifyStream from 'arrayify-stream';
import type { Quad } from 'rdf-js';
import { translate } from 'sparqlalgebrajs';
import streamifyArray from 'streamify-array';
import type { SparqlUpdatePatch } from '../../../../src/ldp/http/SparqlUpdatePatch';
import { RepresentationMetadata } from '../../../../src/ldp/representation/RepresentationMetadata';
import type { Lock } from '../../../../src/storage/Lock';
import { SparqlUpdatePatchHandler } from '../../../../src/storage/patch/SparqlUpdatePatchHandler';
import type { ResourceLocker } from '../../../../src/storage/ResourceLocker';
import type { ResourceStore } from '../../../../src/storage/ResourceStore';
import { INTERNAL_QUADS } from '../../../../src/util/ContentTypes';
import { UnsupportedHttpError } from '../../../../src/util/errors/UnsupportedHttpError';
describe('A SparqlUpdatePatchHandler', (): void => {
let handler: SparqlUpdatePatchHandler;
let locker: ResourceLocker;
let lock: Lock;
let release: () => Promise<void>;
let source: ResourceStore;
let startQuads: Quad[];
let order: string[];
beforeEach(async(): Promise<void> => {
order = [];
startQuads = [ quad(
namedNode('http://test.com/startS1'),
namedNode('http://test.com/startP1'),
namedNode('http://test.com/startO1'),
), quad(
namedNode('http://test.com/startS2'),
namedNode('http://test.com/startP2'),
namedNode('http://test.com/startO2'),
) ];
source = {
getRepresentation: jest.fn(async(): Promise<any> => {
order.push('getRepresentation');
return {
dataType: 'quads',
data: streamifyArray([ ...startQuads ]),
metadata: null,
};
}),
setRepresentation: jest.fn(async(): Promise<any> => {
order.push('setRepresentation');
}),
modifyResource: jest.fn(async(): Promise<any> => {
throw new Error('noModify');
}),
} as unknown as ResourceStore;
release = jest.fn(async(): Promise<any> => order.push('release'));
locker = {
acquire: jest.fn(async(): Promise<any> => {
order.push('acquire');
lock = { release };
return lock;
}),
};
handler = new SparqlUpdatePatchHandler(source, locker);
});
const basicChecks = async(quads: Quad[]): Promise<boolean> => {
expect(source.getRepresentation).toHaveBeenCalledTimes(1);
expect(source.getRepresentation).toHaveBeenLastCalledWith(
{ path: 'path' }, { type: [{ value: INTERNAL_QUADS, weight: 1 }]},
);
expect(source.setRepresentation).toHaveBeenCalledTimes(1);
expect(order).toEqual([ 'acquire', 'getRepresentation', 'setRepresentation', 'release' ]);
const setParams = (source.setRepresentation as jest.Mock).mock.calls[0];
expect(setParams[0]).toEqual({ path: 'path' });
expect(setParams[1]).toEqual(expect.objectContaining({
binary: false,
metadata: expect.any(RepresentationMetadata),
}));
expect(setParams[1].metadata.contentType).toEqual(INTERNAL_QUADS);
await expect(arrayifyStream(setParams[1].data)).resolves.toBeRdfIsomorphic(quads);
return true;
};
it('only accepts SPARQL updates.', async(): Promise<void> => {
const input = { identifier: { path: 'path' },
patch: { algebra: {}} as SparqlUpdatePatch };
await expect(handler.canHandle(input)).resolves.toBeUndefined();
delete (input.patch as any).algebra;
await expect(handler.canHandle(input)).rejects.toThrow(UnsupportedHttpError);
});
it('handles INSERT DATA updates.', async(): Promise<void> => {
await handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'INSERT DATA { <http://test.com/s1> <http://test.com/p1> <http://test.com/o1>. ' +
'<http://test.com/s2> <http://test.com/p2> <http://test.com/o2> }',
{ quads: true },
) } as SparqlUpdatePatch });
expect(await basicChecks(startQuads.concat(
[ quad(namedNode('http://test.com/s1'), namedNode('http://test.com/p1'), namedNode('http://test.com/o1')),
quad(namedNode('http://test.com/s2'), namedNode('http://test.com/p2'), namedNode('http://test.com/o2')) ],
))).toBe(true);
});
it('handles DELETE DATA updates.', async(): Promise<void> => {
await handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE DATA { <http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> }',
{ quads: true },
) } as SparqlUpdatePatch });
expect(await basicChecks(
[ quad(namedNode('http://test.com/startS2'),
namedNode('http://test.com/startP2'),
namedNode('http://test.com/startO2')) ],
)).toBe(true);
});
it('handles DELETE WHERE updates with no variables.', async(): Promise<void> => {
await handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE WHERE { <http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> }',
{ quads: true },
) } as SparqlUpdatePatch });
expect(await basicChecks(
[ quad(namedNode('http://test.com/startS2'),
namedNode('http://test.com/startP2'),
namedNode('http://test.com/startO2')) ],
)).toBe(true);
});
it('handles DELETE/INSERT updates with empty WHERE.', async(): Promise<void> => {
await handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE { <http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> }\n' +
'INSERT { <http://test.com/s1> <http://test.com/p1> <http://test.com/o1>. }\n' +
'WHERE {}',
{ quads: true },
) } as SparqlUpdatePatch });
expect(await basicChecks([
quad(namedNode('http://test.com/startS2'),
namedNode('http://test.com/startP2'),
namedNode('http://test.com/startO2')),
quad(namedNode('http://test.com/s1'),
namedNode('http://test.com/p1'),
namedNode('http://test.com/o1')),
])).toBe(true);
});
it('rejects GRAPH inserts.', async(): Promise<void> => {
const handle = handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'INSERT DATA { GRAPH <http://test.com/graph> { ' +
'<http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> } }',
{ quads: true },
) } as SparqlUpdatePatch });
await expect(handle).rejects.toThrow('GRAPH statements are not supported');
expect(order).toEqual([]);
});
it('rejects GRAPH deletes.', async(): Promise<void> => {
const handle = handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE DATA { GRAPH <http://test.com/graph> { ' +
'<http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> } }',
{ quads: true },
) } as SparqlUpdatePatch });
await expect(handle).rejects.toThrow('GRAPH statements are not supported');
expect(order).toEqual([]);
});
it('rejects DELETE/INSERT updates with a non-empty WHERE.', async(): Promise<void> => {
const handle = handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE { <http://test.com/startS1> <http://test.com/startP1> <http://test.com/startO1> }\n' +
'INSERT { <http://test.com/s1> <http://test.com/p1> <http://test.com/o1>. }\n' +
'WHERE { ?s ?p ?o }',
{ quads: true },
) } as SparqlUpdatePatch });
await expect(handle).rejects.toThrow('WHERE statements are not supported');
expect(order).toEqual([]);
});
it('rejects DELETE WHERE updates with variables.', async(): Promise<void> => {
const handle = handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'DELETE WHERE { ?v <http://test.com/startP1> <http://test.com/startO1> }',
{ quads: true },
) } as SparqlUpdatePatch });
await expect(handle).rejects.toThrow('WHERE statements are not supported');
expect(order).toEqual([]);
});
it('rejects non-DELETE/INSERT updates.', async(): Promise<void> => {
const handle = handler.handle({ identifier: { path: 'path' },
patch: { algebra: translate(
'MOVE DEFAULT TO GRAPH <http://test.com/newGraph>',
{ quads: true },
) } as SparqlUpdatePatch });
await expect(handle).rejects.toThrow('Only DELETE/INSERT SPARQL update operations are supported');
expect(order).toEqual([]);
});
});