Mailspring/app/spec/models/mutable-query-result-set-spec.es6

/* eslint quote-props: 0 */
import MutableQueryResultSet from '../../src/flux/models/mutable-query-result-set';
import QueryRange from '../../src/flux/models/query-range';

describe('MutableQueryResultSet', function MutableQueryResultSetSpecs() {
  describe('clipToRange', () => {
    it('should do nothing if the clipping range is infinite', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      const beforeRange = set.range();
      set.clipToRange(QueryRange.infinite());
      const afterRange = set.range();

      expect(beforeRange.isEqual(afterRange)).toBe(true);
    });

    it('should correctly trim the result set 5-10 to the clipping range 2-9', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      expect(set.range().isEqual(new QueryRange({ offset: 5, limit: 5 }))).toBe(true);
      set.clipToRange(new QueryRange({ offset: 2, limit: 7 }));
      expect(set.range().isEqual(new QueryRange({ offset: 5, limit: 4 }))).toBe(true);
      expect(set.ids()).toEqual(['A', 'B', 'C', 'D']);
    });

    it('should correctly trim the result set 5-10 to the clipping range 5-10', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      set.clipToRange(new QueryRange({ start: 5, end: 10 }));
      expect(set.range().isEqual(new QueryRange({ start: 5, end: 10 }))).toBe(true);
      expect(set.ids()).toEqual(['A', 'B', 'C', 'D', 'E']);
    });

    it('should correctly trim the result set 5-10 to the clipping range 6', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      set.clipToRange(new QueryRange({ offset: 6, limit: 1 }));
      expect(set.range().isEqual(new QueryRange({ offset: 6, limit: 1 }))).toBe(true);
      expect(set.ids()).toEqual(['B']);
    });

    it('should correctly trim the result set 5-10 to the clipping range 100-200', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      set.clipToRange(new QueryRange({ start: 100, end: 200 }));
      expect(set.range().isEqual(new QueryRange({ start: 100, end: 100 }))).toBe(true);
      expect(set.ids()).toEqual([]);
    });

    it('should correctly trim the result set 5-10 to the clipping range 0-2', () => {
      const set = new MutableQueryResultSet({ _ids: ['A', 'B', 'C', 'D', 'E'], _offset: 5 });
      set.clipToRange(new QueryRange({ offset: 0, limit: 2 }));
      expect(set.range().isEqual(new QueryRange({ offset: 5, limit: 0 }))).toBe(true);
      expect(set.ids()).toEqual([]);
    });

    it('should trim the models cache to remove models no longer needed', () => {
      const set = new MutableQueryResultSet({
        _ids: ['A', 'B', 'C', 'D', 'E'],
        _offset: 5,
        _modelsHash: {
          A: { id: 'A' },
          B: { id: 'B' },
          C: { id: 'C' },
          D: { id: 'D' },
          E: { id: 'E' },
        },
      });

      set.clipToRange(new QueryRange({ start: 5, end: 8 }));
      expect(set._modelsHash).toEqual({
        A: { id: 'A' },
        B: { id: 'B' },
        C: { id: 'C' },
      });
    });
  });

  describe('addIdsInRange', () => {
    describe('when the set is currently empty', () =>
      it('should set the result set to the provided one', () => {
        this.set = new MutableQueryResultSet();
        this.set.addIdsInRange(['B', 'C', 'D'], new QueryRange({ start: 1, end: 4 }));
        expect(this.set.ids()).toEqual(['B', 'C', 'D']);
        expect(this.set.range().isEqual(new QueryRange({ start: 1, end: 4 }))).toBe(true);
      }));

    describe('when the set has existing values', () => {
      beforeEach(() => {
        this.set = new MutableQueryResultSet({
          _ids: ['A', 'B', 'C', 'D', 'E'],
          _offset: 5,
          _modelsHash: {
            A: { id: 'A' },
            B: { id: 'B' },
            C: { id: 'C' },
            D: { id: 'D' },
            E: { id: 'E' },
          },
        });
      });

      it("should throw an exception if the range provided doesn't intersect (trailing)", () => {
        expect(() => {
          this.set.addIdsInRange(['G', 'H', 'I'], new QueryRange({ offset: 11, limit: 3 }));
        }).toThrow();

        expect(() => {
          this.set.addIdsInRange(['F', 'G', 'H'], new QueryRange({ offset: 10, limit: 3 }));
        }).not.toThrow();
      });

      it("should throw an exception if the range provided doesn't intersect (leading)", () => {
        expect(() => {
          this.set.addIdsInRange(['0', '1', '2'], new QueryRange({ offset: 1, limit: 3 }));
        }).toThrow();

        expect(() => {
          this.set.addIdsInRange(['0', '1', '2'], new QueryRange({ offset: 2, limit: 3 }));
        }).not.toThrow();
      });

      it('should work if the IDs array is shorter than the result range they represent (addition)', () => {
        this.set.addIdsInRange(['F', 'G', 'H'], new QueryRange({ offset: 10, limit: 5 }));
        expect(this.set.ids()).toEqual(['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']);
      });

      it('should work if the IDs array is shorter than the result range they represent (replacement)', () => {
        this.set.addIdsInRange(['A', 'B', 'C'], new QueryRange({ offset: 5, limit: 5 }));
        expect(this.set.ids()).toEqual(['A', 'B', 'C']);
      });

      it('should correctly add ids (trailing) and update the offset', () => {
        this.set.addIdsInRange(['F', 'G', 'H'], new QueryRange({ offset: 10, limit: 3 }));
        expect(this.set.ids()).toEqual(['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']);
        expect(this.set.range().offset).toEqual(5);
      });

      it('should correctly add ids (leading) and update the offset', () => {
        this.set.addIdsInRange(['0', '1', '2'], new QueryRange({ offset: 2, limit: 3 }));
        expect(this.set.ids()).toEqual(['0', '1', '2', 'A', 'B', 'C', 'D', 'E']);
        expect(this.set.range().offset).toEqual(2);
      });

      it('should correctly add ids (middle) and update the offset', () => {
        this.set.addIdsInRange(
          ['B-new', 'C-new', 'D-new'],
          new QueryRange({ offset: 6, limit: 3 })
        );
        expect(this.set.ids()).toEqual(['A', 'B-new', 'C-new', 'D-new', 'E']);
        expect(this.set.range().offset).toEqual(5);
      });

      it('should correctly add ids (middle+trailing) and update the offset', () => {
        this.set.addIdsInRange(
          ['D-new', 'E-new', 'F-new'],
          new QueryRange({ offset: 8, limit: 3 })
        );
        expect(this.set.ids()).toEqual(['A', 'B', 'C', 'D-new', 'E-new', 'F-new']);
        expect(this.set.range().offset).toEqual(5);
      });
    });
  });

  describe('updateModel', () => {
    beforeEach(() => {
      this.mockModel = id => {
        return {
          id: id,
          constructor: {
            attributes: [],
          },
        };
      };
    });
  });
});