Implemented login & added tests

scm-ui/src/modules/login.test.js

@@ -0,0 +1,49 @@
+// @flow
+import reducer, {
+  LOGIN_REQUEST,
+  LOGIN_FAILED,
+  IS_AUTHENTICATED,
+  IS_NOT_AUTHENTICATED
+} from "./login";
+import { LOGIN, LOGIN_SUCCESSFUL } from "./login";
+
+test("login", () => {
+  var newState = reducer({}, { type: LOGIN });
+  expect(newState.login).toBe(false);
+  expect(newState.error).toBe(null);
+});
+
+test("login request", () => {
+  var newState = reducer({}, { type: LOGIN_REQUEST });
+  expect(newState.login).toBe(undefined);
+});
+
+test("login successful", () => {
+  var newState = reducer({ login: false }, { type: LOGIN_SUCCESSFUL });
+  expect(newState.login).toBe(true);
+  expect(newState.error).toBe(null);
+});
+
+test("login failed", () => {
+  var newState = reducer({}, { type: LOGIN_FAILED, payload: "error!" });
+  expect(newState.login).toBe(false);
+  expect(newState.error).toBe("error!");
+});
+
+test("is authenticated", () => {
+  var newState = reducer(
+    { login: false },
+    { type: IS_AUTHENTICATED, username: "test" }
+  );
+  expect(newState.login).toBeTruthy();
+  expect(newState.username).toBe("test");
+});
+
+test("is not authenticated", () => {
+  var newState = reducer(
+    { login: true, username: "foo" },
+    { type: IS_NOT_AUTHENTICATED }
+  );
+  expect(newState.login).toBe(false);
+  expect(newState.username).toBeNull();
+});