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public/app/features/templating/specs/variable_srv_init.jest.ts

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+//import { describe, beforeEach, it, sinon, expect, angularMocks } from 'test/lib/common';
+
+import '../all';
+
+import _ from 'lodash';
+// import helpers from 'test/specs/helpers';
+// import { Emitter } from 'app/core/core';
+import { VariableSrv } from '../variable_srv';
+import $q from 'q';
+
+describe('VariableSrv init', function() {
+  let templateSrv = {
+    init: () => {},
+  };
+  let $injector = {
+    instantiate: (vars, model) => {
+      return new vars(model.model);
+    },
+  };
+  let $rootscope = {
+    $on: () => {},
+  };
+
+  let ctx = <any>{
+    datasourceSrv: {},
+    $location: {},
+    dashboard: {},
+  };
+
+  //   beforeEach(angularMocks.module('grafana.core'));
+  //   beforeEach(angularMocks.module('grafana.controllers'));
+  //   beforeEach(angularMocks.module('grafana.services'));
+  //   beforeEach(
+  //     angularMocks.module(function($compileProvider) {
+  //       $compileProvider.preAssignBindingsEnabled(true);
+  //     })
+  //   );
+
+  //   beforeEach(ctx.providePhase(['datasourceSrv', 'timeSrv', 'templateSrv', '$location']));
+  //   beforeEach(
+  //     angularMocks.inject(($rootScope, $q, $location, $injector) => {
+  //       ctx.$q = $q;
+  //       ctx.$rootScope = $rootScope;
+  //       ctx.$location = $location;
+  //       ctx.variableSrv = $injector.get('variableSrv');
+  //       ctx.$rootScope.$digest();
+  //     })
+  //   );
+
+  function describeInitScenario(desc, fn) {
+    describe(desc, function() {
+      //   events: new Emitter(),
+      var scenario: any = {
+        urlParams: {},
+        setup: setupFn => {
+          scenario.setupFn = setupFn;
+        },
+      };
+
+      beforeEach(function() {
+        scenario.setupFn();
+        ctx.variableSrv = new VariableSrv($rootscope, $q, {}, $injector, templateSrv);
+        ctx.variableSrv.datasource = {};
+        ctx.variableSrv.datasource.metricFindQuery = jest.fn(() => Promise.resolve(scenario.queryResult));
+
+        ctx.variableSrv.datasourceSrv = {
+          get: () => Promise.resolve(ctx.datasource),
+          getMetricSources: () => Promise.resolve(scenario.metricSources),
+        };
+
+        ctx.variableSrv.$location.search = () => Promise.resolve(scenario.urlParams);
+        ctx.variableSrv.dashboard = {
+          templating: { list: scenario.variables },
+          //   events: new Emitter(),
+        };
+
+        ctx.variableSrv.init(ctx.variableSrv.dashboard);
+        // ctx.$rootScope.$digest();
+
+        scenario.variables = ctx.variableSrv.variables;
+      });
+
+      fn(scenario);
+    });
+  }
+
+  ['query', 'interval', 'custom', 'datasource'].forEach(type => {
+    describeInitScenario('when setting ' + type + ' variable via url', scenario => {
+      scenario.setup(() => {
+        scenario.variables = [
+          {
+            name: 'apps',
+            type: type,
+            current: { text: 'test', value: 'test' },
+            options: [{ text: 'test', value: 'test' }],
+          },
+        ];
+        scenario.urlParams['var-apps'] = 'new';
+        scenario.metricSources = [];
+      });
+
+      it('should update current value', () => {
+        expect(scenario.variables[0].current.value).toBe('new');
+        expect(scenario.variables[0].current.text).toBe('new');
+      });
+    });
+  });
+
+  describe('given dependent variables', () => {
+    var variableList = [
+      {
+        name: 'app',
+        type: 'query',
+        query: '',
+        current: { text: 'app1', value: 'app1' },
+        options: [{ text: 'app1', value: 'app1' }],
+      },
+      {
+        name: 'server',
+        type: 'query',
+        refresh: 1,
+        query: '$app.*',
+        current: { text: 'server1', value: 'server1' },
+        options: [{ text: 'server1', value: 'server1' }],
+      },
+    ];
+
+    describeInitScenario('when setting parent var from url', scenario => {
+      scenario.setup(() => {
+        scenario.variables = _.cloneDeep(variableList);
+        scenario.urlParams['var-app'] = 'google';
+        scenario.queryResult = [{ text: 'google-server1' }, { text: 'google-server2' }];
+      });
+
+      it('should update child variable', () => {
+        expect(scenario.variables[1].options.length).toBe(2);
+        expect(scenario.variables[1].current.text).toBe('google-server1');
+      });
+
+      it('should only update it once', () => {
+        expect(ctx.variableSrv.datasource.metricFindQuery).toHaveBeenCalledTimes(1);
+      });
+    });
+  });
+
+  describeInitScenario('when datasource variable is initialized', scenario => {
+    scenario.setup(() => {
+      scenario.variables = [
+        {
+          type: 'datasource',
+          query: 'graphite',
+          name: 'test',
+          current: { value: 'backend4_pee', text: 'backend4_pee' },
+          regex: '/pee$/',
+        },
+      ];
+      scenario.metricSources = [
+        { name: 'backend1', meta: { id: 'influx' } },
+        { name: 'backend2_pee', meta: { id: 'graphite' } },
+        { name: 'backend3', meta: { id: 'graphite' } },
+        { name: 'backend4_pee', meta: { id: 'graphite' } },
+      ];
+    });
+
+    it('should update current value', function() {
+      var variable = ctx.variableSrv.variables[0];
+      expect(variable.options.length).toBe(2);
+    });
+  });
+
+  describeInitScenario('when template variable is present in url multiple times', scenario => {
+    scenario.setup(() => {
+      scenario.variables = [
+        {
+          name: 'apps',
+          type: 'query',
+          multi: true,
+          current: { text: 'val1', value: 'val1' },
+          options: [
+            { text: 'val1', value: 'val1' },
+            { text: 'val2', value: 'val2' },
+            { text: 'val3', value: 'val3', selected: true },
+          ],
+        },
+      ];
+      scenario.urlParams['var-apps'] = ['val2', 'val1'];
+    });
+
+    it('should update current value', function() {
+      var variable = ctx.variableSrv.variables[0];
+      expect(variable.current.value.length).toBe(2);
+      expect(variable.current.value[0]).toBe('val2');
+      expect(variable.current.value[1]).toBe('val1');
+      expect(variable.current.text).toBe('val2 + val1');
+      expect(variable.options[0].selected).toBe(true);
+      expect(variable.options[1].selected).toBe(true);
+    });
+
+    it('should set options that are not in value to selected false', function() {
+      var variable = ctx.variableSrv.variables[0];
+      expect(variable.options[2].selected).toBe(false);
+    });
+  });
+
+  describeInitScenario('when template variable is present in url multiple times using key/values', scenario => {
+    scenario.setup(() => {
+      scenario.variables = [
+        {
+          name: 'apps',
+          type: 'query',
+          multi: true,
+          current: { text: 'Val1', value: 'val1' },
+          options: [
+            { text: 'Val1', value: 'val1' },
+            { text: 'Val2', value: 'val2' },
+            { text: 'Val3', value: 'val3', selected: true },
+          ],
+        },
+      ];
+      scenario.urlParams['var-apps'] = ['val2', 'val1'];
+    });
+
+    it('should update current value', function() {
+      var variable = ctx.variableSrv.variables[0];
+      expect(variable.current.value.length).toBe(2);
+      expect(variable.current.value[0]).toBe('val2');
+      expect(variable.current.value[1]).toBe('val1');
+      expect(variable.current.text).toBe('Val2 + Val1');
+      expect(variable.options[0].selected).toBe(true);
+      expect(variable.options[1].selected).toBe(true);
+    });
+
+    it('should set options that are not in value to selected false', function() {
+      var variable = ctx.variableSrv.variables[0];
+      expect(variable.options[2].selected).toBe(false);
+    });
+  });
+});