js-data-projector/src/definitions/projection-schema-registry.spec.js

import {expect} from 'chai';
import {format} from '@e22m4u/js-format';
import {ProjectionSchemaRegistry} from './projection-schema-registry.js';

const SCHEMA = {foo: true, bar: false};
const SCHEMA_NAME = 'mySchema';
const SCHEMA_DEF = {name: SCHEMA_NAME, schema: SCHEMA};

describe('ProjectionSchemaRegistry', function () {
  describe('defineSchema', function () {
    it('should add the given definition to registry', function () {
      const S = new ProjectionSchemaRegistry();
      S.defineSchema(SCHEMA_DEF);
      const res = S.getDefinition(SCHEMA_NAME);
      expect(res).to.be.eq(SCHEMA_DEF);
    });

    it('should throw an error if the given name is already registered', function () {
      const S = new ProjectionSchemaRegistry();
      S.defineSchema(SCHEMA_DEF);
      const throwable = () => S.defineSchema(SCHEMA_DEF);
      const error = format(
        'Projection schema %v is already registered.',
        SCHEMA_NAME,
      );
      expect(throwable).to.throw(error);
    });
  });

  describe('hasSchema', function () {
    it('should return true if the given name is registered', function () {
      const S = new ProjectionSchemaRegistry();
      const res1 = S.hasSchema(SCHEMA_NAME);
      expect(res1).to.be.false;
      S.defineSchema(SCHEMA_DEF);
      const res2 = S.hasSchema(SCHEMA_NAME);
      expect(res2).to.be.true;
    });
  });

  describe('getSchema', function () {
    it('should throw an error if the given name is not registered', function () {
      const S = new ProjectionSchemaRegistry();
      const throwable = () => S.getSchema(SCHEMA_NAME);
      const error = format('Projection schema %v is not found.', SCHEMA_NAME);
      expect(throwable).to.throw(error);
    });

    it('should return registered schema', function () {
      const S = new ProjectionSchemaRegistry();
      S.defineSchema(SCHEMA_DEF);
      const res = S.getSchema(SCHEMA_NAME);
      expect(res).to.be.eq(SCHEMA);
    });
  });

  describe('getDefinition', function () {
    it('should throw an error if the given name is not registered', function () {
      const S = new ProjectionSchemaRegistry();
      const throwable = () => S.getDefinition(SCHEMA_NAME);
      const error = format(
        'Projection definition %v is not found.',
        SCHEMA_NAME,
      );
      expect(throwable).to.throw(error);
    });

    it('should return registered schema', function () {
      const S = new ProjectionSchemaRegistry();
      S.defineSchema(SCHEMA_DEF);
      const res = S.getDefinition(SCHEMA_NAME);
      expect(res).to.be.eq(SCHEMA_DEF);
    });
  });
});