Add tests and fix docker files

test/key-generators/random.test.ts

@@ -0,0 +1,20 @@
+import Generator from '../../src/lib/key-generators/random'
+
+describe('RandomKeyGenerator', () => {
+  describe('generation', () => {
+    it('should return a key of the proper length', () => {
+      const gen = new Generator({ type: 'random' })
+      expect(gen.createKey(6).length).toEqual(6)
+    })
+
+    it('should use a key from the given keyset if given', () => {
+      const gen = new Generator({ type: 'random', keyspace: 'A' })
+      expect(gen.createKey(6)).toEqual('AAAAAA')
+    })
+
+    it('should not use a key from the given keyset if not given', () => {
+      const gen = new Generator({ type: 'random', keyspace: 'A' })
+      expect(gen.createKey(6).includes('B')).toBeFalsy()
+    })
+  })
+})