added e2e cypress testing for sprint 2 features

frontend/cypress/e2e/signing_in.cy.js

@@ -1,7 +1,7 @@
 describe("Signing in", () => {
 
   before(() => {
-    cy.signup("[email protected]", "12345678")
+    cy.signup("User", "[email protected]", "12345678")
   })
 
   it("with valid credentials, redirects to '/posts'", () => {

frontend/cypress/e2e/signing_up.cy.js

@@ -1,6 +1,7 @@
 describe("Signing up", () => {
   it("with valid credentials, redirects to '/login'", () => {
     cy.visit("/signup");
+    cy.get("#name").type("Someone")
     cy.get("#email").type("[email protected]");
     cy.get("#password").type("password");
     cy.get("#submit").click();

frontend/cypress/e2e/using_feed_page.cy.js

@@ -0,0 +1,33 @@
+describe("Signing in", () => {
+
+  before(() => {
+    cy.signup("User", "[email protected]", "12345678");
+    cy.login("[email protected]", "12345678");
+  });
+
+  it("creates a new post", () => {
+    cy.get("#newPost").type("Let's chat!");
+    cy.get("#submit").click();
+
+    cy.contains('div.message', "Let's chat!").should('be.visible');
+  });
+
+  it("throws an error if the user posts nothing", () => {
+    cy.get("#submit").click();
+
+    cy.contains('p.validation-error', "Please enter a post").should('be.visible');
+  })
+  it("displays your like when you like a post", () => {
+    cy.get("#newPost").type("Let's chat!");
+    cy.get("#submit").click();
+    cy.get(".like-button:first").click();
+
+    cy.contains('div.likes', "1").should('be.visible');
+  })
+
+  it("returns to login page after clicking logout", () => {
+    cy.get(".logout").click();
+
+    cy.url().should("include", "/login")
+  })
+});

frontend/cypress/support/commands.js

@@ -10,8 +10,16 @@
 //
 //
 // -- This is a parent command --
-Cypress.Commands.add('signup', (email, password) => {
+Cypress.Commands.add('signup', (name, email, password) => {
   cy.visit("/signup");
+  cy.get("#name").type(name);
+  cy.get("#email").type(email);
+  cy.get("#password").type(password);
+  cy.get("#submit").click();
+})
+
+Cypress.Commands.add('login', (email, password) => {
+  cy.visit("/login");
   cy.get("#email").type(email);
   cy.get("#password").type(password);
   cy.get("#submit").click();