test: kmeans test

api/src/engine/connectors/exareme/handlers/algorithms/kmeans.handler.spec.ts

+import { Domain } from '../../../../models/domain.model'
+import handlers from '..'
+import { Experiment } from '../../../../models/experiment/experiment.model'
+import KMeansHandler from './kmeans.handler'
+
+const createExperiment = (): Experiment => ({
+  id: 'dummy-id',
+  name: 'Testing purpose',
+  algorithm: {
+    name: KMeansHandler.ALGO_NAME,
+  },
+  datasets: ['desd-synthdata,edsd,ppmi'],
+  domain: 'dementia:0.1',
+  variables: ['rightphgparahippocampalgyrus,leftacgganteriorcingulategyrus,rightmcggmiddlecingulategyrus'],
+  coVariables: [''],
+  results: [],
+})
+
+const domain: Domain = {
+  id: 'dummy-id',
+  groups: [],
+  rootGroup: {
+    id: 'dummy-id',
+  },
+  datasets: [
+    { id: 'desd-synthdata', label: 'Dead Synthdata' },
+    { id: 'edsd', label: 'Dead Synthdata' },
+    { id: 'ppmi', label: 'Dead Synthdata' }
+  ],
+  variables: [
+    { id: 'rightcerebralwhitematter', label: 'Example label' },
+    { id: 'leftacgganteriorcingulategyrus', label: 'Example label 2' },
+    { id: 'rightmcggmiddlecingulategyrus', label: 'Example label 3' },
+  ],
+}
+
+const data = [{ "title": "K-Means Centers", "centers": [[2.416308695652174, 0.49923478260869575, 0.6704447826086956], [2.8008268934531437, 4.355844159178429, 4.368724582798459], [3.1799977551020424, 5.278902244897958, 5.245970816326524]] }]
+
+describe('KMeans result handler', () => {
+  let kmeansHandler:  KMeansHandler;
+  let experiment: Experiment;
+
+  beforeEach(() => {
+    kmeansHandler = new KMeansHandler();
+    experiment = createExperiment();
+  });
+
+  it('Test kmeans 3d handler', () => {
+    experiment = createExperiment();
+    kmeansHandler.handle(experiment, data, domain);
+
+    expect(experiment.results.length).toBe(2);
+
+    const table = kmeansHandler.getTable(data[0].centers);
+    const plot = kmeansHandler.getCluster(data[0]);
+
+    expect(table.data[0].length).toEqual(3);
+    expect(table.headers.length).toEqual(3);
+    expect(table.data).toBeTruthy();
+
+    expect(plot.nmatrix).toBeTruthy()
+
+  })
+})

api/src/engine/connectors/exareme/handlers/algorithms/kmeans.handler.ts

@@ -4,11 +4,11 @@ import BaseHandler from '../base.handler';
 import { ClusterResult } from '../../../../models/result/cluster-result.model';
 import { TableResult } from 'src/engine/models/result/table-result.model';
 
-const ALGO_NAME = 'kmeans';
-
 export default class KMeansHandler extends BaseHandler {
+  public static readonly ALGO_NAME = 'kmeans';
+
   canHandle(exp: Experiment, data: any): boolean {
-    return exp.algorithm.name.toLowerCase() === ALGO_NAME;
+    return exp.algorithm.name.toLowerCase() === KMeansHandler.ALGO_NAME;
   }
 
   getCluster(data: any): ClusterResult {