working commit LoginPage.jsx tests

__tests__/tests/LoginPage.test.jsx

@@ -0,0 +1,49 @@
+import React from 'react';
+import { MemoryRouter } from 'react-router-dom';
+import { shallow, mount } from 'enzyme';
+import LoginPage from '../../src/pages/Login';
+import api from '../../src/api';
+import Dashboard from '../../src/pages/Dashboard';
+
+describe('<LoginPage />', () => {
+  let loginWrapper, usernameInput, passwordInput, errorTextArea, submitButton;
+
+  beforeEach(() => {
+    loginWrapper = mount(<MemoryRouter><LoginPage /></MemoryRouter>);
+    usernameInput = loginWrapper.find('.pf-c-form__group#username TextInput');
+    passwordInput = loginWrapper.find('.pf-c-form__group#password TextInput');
+    errorTextArea = loginWrapper.find('.pf-c-form__helper-text.pf-m-error');
+    submitButton = loginWrapper.find('Button[type="submit"]');
+  });
+
+  test('initially renders without crashing', () => {
+    expect(loginWrapper.length).toBe(1);
+    expect(usernameInput.length).toBe(1);
+    expect(passwordInput.length).toBe(1);
+    expect(errorTextArea.length).toBe(1);
+    expect(submitButton.length).toBe(1);
+  });
+
+  // initially renders empty username and password fields
+  // as well as state.username and state.password to empty strings
+  // initially sets state.error and state.loading to false
+
+  // on unmount, unmount is set to true
+
+  // typing into username and password fields (if the component is not unmounting)
+  // set state.username and state.password, as well as set state.error to empty string
+  // this is done through the handleUsernameChange and handlePasswordChange functions
+  // which both call safeSetState
+
+  // when the submit Button is clicked, as long as it is not disabled (through state.loading
+  // being set tp true), state.loading is set to true (through safeSetState)
+  // api.login is called with param 1 username and param 2 password based on state
+  
+  // if api.login returns an error, the state.error should be set to LOGIN_ERROR_MESSAGE
+  // if the error object returned has response.status set to 401.
+
+  // regardless of error or not, after api.login returns state.loading should be set to false
+  // via safeSetState
+
+  // QUESTION: if api.login is valid, how does redirect happen?
+});