Add tests for alert.js

frontend/tests/unit/common/alert_test.js

@@ -0,0 +1,32 @@
+import Alert from "common/alert";
+let sinon = require("sinon");
+
+describe("common/alert", () => {
+    it("should call alert.info",  () => {
+        let spy = sinon.spy(Alert, "info");
+        Alert.info("message");
+        sinon.assert.calledOnce(spy);
+        spy.resetHistory();
+    });
+
+    it("should call alert.warning",  () => {
+        let spy = sinon.spy(Alert, "warning");
+        Alert.warning("message");
+        sinon.assert.calledOnce(spy);
+        spy.resetHistory();
+    });
+
+    it("should call alert.error",  () => {
+        let spy = sinon.spy(Alert, "error");
+        Alert.error("message");
+        sinon.assert.calledOnce(spy);
+        spy.resetHistory();
+    });
+
+    it("should call alert.success",  () => {
+        let spy = sinon.spy(Alert, "success");
+        Alert.success("message");
+        sinon.assert.calledOnce(spy);
+        spy.resetHistory();
+    });
+});