Add test for config.js

frontend/tests/unit/common/config_test.js

@@ -0,0 +1,50 @@
+import assert from "assert";
+import Config from "common/config";
+
+
+describe("common/config", () => {
+    it("should get all config values",  () => {
+        const storage = window.localStorage;
+        const values = {name: "testConfig", year: "2300"};
+
+        const config = new Config(storage, values);
+        const result = config.getValues();
+        assert.equal(result.name, "testConfig");
+    });
+
+    it("should set multiple config values",  () => {
+        const storage = window.localStorage;
+        const values = {country: "Germany", city: "Hamburg"};
+        const newValues = {new: "xxx", city: "Berlin"};
+        const config = new Config(storage, values);
+        assert.equal(config.values.new, undefined);
+        assert.equal(config.values.city, "Hamburg");
+        config.setValues();
+        assert.equal(config.values.new, undefined);
+        assert.equal(config.values.city, "Hamburg");
+        config.setValues(newValues);
+        const result = config.getValues();
+        assert.equal(result.city, "Berlin");
+        assert.equal(result.new, "xxx");
+        assert.equal(result.country, "Germany");
+    });
+
+    it("should store values",  () => {
+        const storage = window.localStorage;
+        const values = {country: "Germany", city: "Hamburg"};
+        const config = new Config(storage, values);
+        assert.equal(config.storage["config"], undefined);
+        config.storeValues();
+        assert.equal(config.storage["config"], "{\"country\":\"Germany\",\"city\":\"Hamburg\"}");
+    });
+
+    it("should set and get single config value",  () => {
+        const storage = window.localStorage;
+        const values = {};
+
+        const config = new Config(storage, values);
+        config.setValue("city", "Berlin");
+        const result = config.getValue("city");
+        assert.equal(result, "Berlin");
+    });
+});