@rdf-esm/data-model/test/quad.cjs

A basic implementation of the RDFJS Data Model

const assert = require('assert')
const { describe, it } = require('mocha')

function runTests (DataFactory) {
  describe('.quad', function () {
    it('should be a static method', function () {
      assert.strictEqual(typeof DataFactory.quad, 'function')
    })

    it('should create an object with .subject, .predicate, .object and .graph with the given values', function () {
      var subject = DataFactory.namedNode('http://example.org/subject')
      var predicate = DataFactory.namedNode('http://example.org/predicate')
      var object = DataFactory.namedNode('http://example.org/object')
      var graph = DataFactory.namedNode('http://example.org/graph')
      var quad = DataFactory.quad(subject, predicate, object, graph)

      assert.strictEqual(subject.equals(quad.subject), true)
      assert.strictEqual(predicate.equals(quad.predicate), true)
      assert.strictEqual(object.equals(quad.object), true)
      assert.strictEqual(graph.equals(quad.graph), true)
    })

    it('should create an object .graph set to DefaultGraph if the argument isn\'t given', function () {
      var subject = DataFactory.namedNode('http://example.org/subject')
      var predicate = DataFactory.namedNode('http://example.org/predicate')
      var object = DataFactory.namedNode('http://example.org/object')
      var graph = DataFactory.defaultGraph()
      var quad = DataFactory.quad(subject, predicate, object)

      assert.strictEqual(quad.graph.equals(graph), true)
    })

    describe('.equals', function () {
      it('should return true if the other quad contains the same subject, predicate, object and graph', function () {
        var subject = DataFactory.namedNode('http://example.org/subject')
        var predicate = DataFactory.namedNode('http://example.org/predicate')
        var object = DataFactory.namedNode('http://example.org/object')
        var graph = DataFactory.namedNode('http://example.org/graph')
        var quad1 = DataFactory.quad(subject, predicate, object, graph)
        var quad2 = DataFactory.quad(subject, predicate, object, graph)

        assert.strictEqual(quad1.equals(quad2), true)
      })

      it('should return false if the subject of the other quad is not the same', function () {
        var subject1 = DataFactory.namedNode('http://example.org/subject')
        var subject2 = DataFactory.namedNode('http://example.com/subject')
        var predicate = DataFactory.namedNode('http://example.org/predicate')
        var object = DataFactory.namedNode('http://example.org/object')
        var graph = DataFactory.namedNode('http://example.org/graph')
        var quad1 = DataFactory.quad(subject1, predicate, object, graph)
        var quad2 = DataFactory.quad(subject2, predicate, object, graph)

        assert.strictEqual(quad1.equals(quad2), false)
      })

      it('should return false if the predicate of the other quad is not the same', function () {
        var subject = DataFactory.namedNode('http://example.org/subject')
        var predicate1 = DataFactory.namedNode('http://example.org/predicate')
        var predicate2 = DataFactory.namedNode('http://example.com/predicate')
        var object = DataFactory.namedNode('http://example.org/object')
        var graph = DataFactory.namedNode('http://example.org/graph')
        var quad1 = DataFactory.quad(subject, predicate1, object, graph)
        var quad2 = DataFactory.quad(subject, predicate2, object, graph)

        assert.strictEqual(quad1.equals(quad2), false)
      })

      it('should return false if the object of the other quad is not the same', function () {
        var subject = DataFactory.namedNode('http://example.org/subject')
        var predicate = DataFactory.namedNode('http://example.org/predicate')
        var object1 = DataFactory.namedNode('http://example.org/object')
        var object2 = DataFactory.namedNode('http://example.com/object')
        var graph = DataFactory.namedNode('http://example.org/graph')
        var quad1 = DataFactory.quad(subject, predicate, object1, graph)
        var quad2 = DataFactory.quad(subject, predicate, object2, graph)

        assert.strictEqual(quad1.equals(quad2), false)
      })

      it('should return false if the graph of the other quad is not the same', function () {
        var subject = DataFactory.namedNode('http://example.org/subject')
        var predicate = DataFactory.namedNode('http://example.org/predicate')
        var object = DataFactory.namedNode('http://example.org/object')
        var graph1 = DataFactory.namedNode('http://example.org/graph')
        var graph2 = DataFactory.namedNode('http://example.com/graph')
        var quad1 = DataFactory.quad(subject, predicate, object, graph1)
        var quad2 = DataFactory.quad(subject, predicate, object, graph2)

        assert.strictEqual(quad1.equals(quad2), false)
      })

      it('should return false if value is falsy', function () {
        var subject = DataFactory.namedNode('http://example.org/subject')
        var predicate = DataFactory.namedNode('http://example.org/predicate')
        var object = DataFactory.namedNode('http://example.org/object')
        var graph = DataFactory.namedNode('http://example.org/graph')
        var quad = DataFactory.quad(subject, predicate, object, graph)

        assert.strictEqual(quad.equals(null), false)
      })
    })
  })
}

module.exports = runTests