grafana/public/app/features/templating/specs/variable_specs.ts

import {describe, beforeEach, it, sinon, expect, angularMocks} from 'test/lib/common';

import {containsVariable, assignModelProperties} from '../variable';

describe('containsVariable', function() {

  describe('when checking if a string contains a variable', function() {

    it('should find it with $var syntax', function() {
      var contains = containsVariable('this.$test.filters', 'test');
      expect(contains).to.be(true);
    });

    it('should not find it if only part matches with $var syntax', function() {
      var contains = containsVariable('this.$serverDomain.filters', 'server');
      expect(contains).to.be(false);
    });

    it('should find it if it ends with variable and passing multiple test strings', function() {
      var contains = containsVariable('show field keys from $pgmetric', 'test string2', 'pgmetric');
      expect(contains).to.be(true);
    });

    it('should find it with [[var]] syntax', function() {
      var contains = containsVariable('this.[[test]].filters', 'test');
      expect(contains).to.be(true);
    });

    it('should find it when part of segment', function() {
      var contains = containsVariable('metrics.$env.$group-*', 'group');
      expect(contains).to.be(true);
    });

    it('should find it its the only thing', function() {
      var contains = containsVariable('$env', 'env');
      expect(contains).to.be(true);
    });

    it('should be able to pass in multiple test strings', function() {
      var contains = containsVariable('asd','asd2.$env', 'env');
      expect(contains).to.be(true);
    });

  });

});

describe('assignModelProperties', function() {

  it('only set properties defined in defaults', function() {
    var target: any = {test: 'asd'};
    assignModelProperties(target, {propA: 1, propB: 2}, {propB: 0});
    expect(target.propB).to.be(2);
    expect(target.test).to.be('asd');
  });

  it('use default value if not found on source', function() {
    var target: any = {test: 'asd'};
    assignModelProperties(target, {propA: 1, propB: 2}, {propC: 10});
    expect(target.propC).to.be(10);
  });

});