Added test to ensure all filters are implemented in determineFilter()

Author: r59q

src/__tests__/datafunctions.test.ts

@@ -0,0 +1,17 @@
+/**
+ * @jest-environment jsdom
+ */
+
+import fs from 'fs';
+import { determineFilter, Filters } from '../script/datafunctions';
+import { doesNotThrow } from 'assert';
+function enumKeys<O extends object, K extends keyof O = keyof O>(obj: O): K[] {
+  return Object.keys(obj).filter(k => Number.isNaN(+k)) as K[];
+}
+describe('Data functions architecture test', () => {
+  test('All filters should be implemented in determineFilter', () => {
+    for (const filter of enumKeys(Filters)) {
+      expect(() => determineFilter(Filters[filter])).not.toThrow();
+    }
+  });
+});