js-data-schema/src/data-schema-registry.spec.js

import {expect} from 'chai';
import {DataType} from './data-type.js';
import {DataSchemaRegistry} from './data-schema-registry.js';

describe('DataSchemaRegistry', function () {
  describe('defineSchema', function () {
    it('should register a given definition', function () {
      const S = new DataSchemaRegistry();
      const schemaDef = {name: 'mySchema', schema: {}};
      S.defineSchema(schemaDef);
      const res = S.getDefinition(schemaDef.name);
      expect(res).to.be.eql(schemaDef);
    });

    it('should override a registered definition', function () {
      const S = new DataSchemaRegistry();
      const def1 = {name: 'mySchema', schema: {type: DataType.STRING}};
      const def2 = {name: 'mySchema', schema: {type: DataType.NUMBER}};
      S.defineSchema(def1);
      const res1 = S.getDefinition(def1.name);
      expect(res1).to.be.eql(def1);
      S.defineSchema(def2);
      const res2 = S.getDefinition(def2.name);
      expect(res2).to.be.eql(def2);
    });

    it('should return the current instance', function () {
      const S = new DataSchemaRegistry();
      const res = S.defineSchema({name: 'mySchema', schema: {}});
      expect(res).to.be.eq(S);
    });
  });

  describe('hasSchema', function () {
    it('should return true if a given name is registered', function () {
      const S = new DataSchemaRegistry();
      const schemaDef = {name: 'mySchema', schema: {}};
      expect(S.hasSchema(schemaDef.name)).to.be.false;
      S.defineSchema(schemaDef);
      expect(S.hasSchema(schemaDef.name)).to.be.true;
    });
  });

  describe('getSchema', function () {
    it('should throw an error if a given name is not registered', function () {
      const S = new DataSchemaRegistry();
      const throwable = () => S.getSchema('mySchema');
      expect(throwable).to.throw('Data schema "mySchema" is not found.');
    });

    it('should return the schema property of a registered definition', function () {
      const S = new DataSchemaRegistry();
      const schemaDef = {name: 'mySchema', schema: {}};
      S.defineSchema(schemaDef);
      const res = S.getSchema(schemaDef.name);
      expect(res).to.be.eql(schemaDef.schema);
    });
  });

  describe('getDefinition', function () {
    it('should throw an error if a given name is not registered', function () {
      const S = new DataSchemaRegistry();
      const throwable = () => S.getDefinition('mySchema');
      expect(throwable).to.throw('Schema definition "mySchema" is not found.');
    });

    it('should return the registered definition for a given name', function () {
      const S = new DataSchemaRegistry();
      const schemaDef = {name: 'mySchema', schema: {}};
      S.defineSchema(schemaDef);
      const res = S.getDefinition(schemaDef.name);
      expect(res).to.be.eql(schemaDef);
    });
  });
});