Implemented Cypress tests and resolved package conflicts

cypress.config.js

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+const { defineConfig } = require("cypress");
+
+module.exports = defineConfig({
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+    viewportWidth: 1400,
+    viewportHeight: 1000,
+    testIsolation: false
+  },
+});

cypress/e2e/main.cy.js

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+Cypress.on("uncaught:exception", (err, runnable) => {
+    return false;
+});
+
+describe("MusicBlocks Application", () => {
+    before(() => {
+        cy.visit("http://localhost:3000");
+    });
+
+    afterEach(() => {
+        console.log("Next test running, no reload should happen");
+    });
+
+    describe("Loading and Initial Render", () => {
+        it("should display the loading animation and then the main content", () => {
+            cy.get("#loading-image-container").should("be.visible");
+            cy.contains("#loadingText", "Loading Complete!", { timeout: 20000 }).should("be.visible");
+            cy.wait(10000);
+            cy.get("#canvas", { timeout: 10000 }).should("be.visible");
+        });
+
+        it("should display the Musicblocks guide page", () => {
+            cy.get(".heading").contains("Welcome to Music Blocks");
+        });
+    });
+
+    describe("Audio Controls", () => {
+        it("should have a functional play button", () => {
+            cy.get("#play").should("be.visible").click();
+            cy.window().then((win) => {
+                const audioContext = win.Tone.context;
+                cy.wrap(audioContext.state).should("eq", "running");
+            });
+        });
+
+        it("should have a functional stop button", () => {
+            cy.get("#stop").should("be.visible").click();
+        });
+    });
+
+    describe("Toolbar and Navigation", () => {
+        it("should open the language selection dropdown", () => {
+            cy.get("#aux-toolbar").invoke("show");
+            cy.get("#languageSelectIcon").click({ force: true });
+            cy.get("#languagedropdown").should("be.visible");
+        });
+
+        it("should toggle full-screen mode", () => {
+            cy.get("#FullScreen").click();
+            cy.document().its("fullscreenElement").should("exist");
+            cy.get("#FullScreen").click();
+            cy.document().its("fullscreenElement").should("not.exist");
+        });
+
+        it("should toggle the toolbar menu", () => {
+            cy.get("#toggleAuxBtn").click();
+            cy.get("#aux-toolbar").should("be.visible");
+            cy.get("#toggleAuxBtn").click();
+            cy.get("#aux-toolbar").should("not.be.visible");
+        });
+    });
+
+    describe("File Operations", () => {
+        it("should open the file load modal", () => {
+            cy.get("#load").click();
+            cy.get("#myOpenFile").should("exist");
+        });
+
+        it("should open the save dropdown", () => {
+            cy.get("#saveButton").click();
+            cy.get("#saveddropdownbeg").should("be.visible");
+        });
+
+        it("should display file save options", () => {
+            cy.get("#saveButton").click();
+            cy.get("#saveddropdownbeg").should("be.visible");
+            cy.get("#save-html-beg").should("exist");
+            cy.get("#save-png-beg").should("exist");
+        });
+
+        it('should click the New File button and verify "New Project" appears', () => {
+            cy.get('#newFile > .material-icons')
+              .should('exist')
+              .and('be.visible');    
+            cy.get('#newFile > .material-icons').click();
+            cy.wait(500);    
+            cy.contains('New project').should('be.visible');
+        });
+    });
+
+    describe("UI Elements", () => {
+        it('should verify that bottom bar elements exist and are visible', () => {
+            const bottomBarElements = [
+              '#Home\\ \\[HOME\\] > img',
+              '#Show\\/hide\\ blocks > img',
+              '#Expand\\/collapse\\ blocks > img',
+              '#Decrease\\ block\\ size > img',
+              '#Increase\\ block\\ size > img'
+            ];
+
+            bottomBarElements.forEach(selector => {
+              cy.get(selector).should('exist').and('be.visible');
+            });
+        });
+
+        it('should verify sidebar elements exist, are visible, and clickable', () => {
+            const sidebarElements = [
+              'thead > tr > :nth-child(1) > img',
+              'tr > :nth-child(2) > img',
+              'tr > :nth-child(3) > img'
+            ];
+
+            sidebarElements.forEach(selector => {
+              cy.get(selector)
+                .should('exist')  
+                .and('be.visible')  
+                .click(); 
+            });
+        });
+
+        it('should verify that Grid, Clear, and Collapse elements exist and are visible', () => {
+            const elements = [
+              '#Grid > img',     
+              '#Clear',          
+              '#Collapse > img'  
+            ];    
+            elements.forEach(selector => {
+              cy.get(selector).should('exist').and('be.visible');
+            });
+        });
+
+        it('should verify that all nth-child elements from 1 to 6 exist', () => {
+            for (let i = 1; i <= 6; i++) {
+              cy.get(`[width="126"] > tbody > :nth-child(${i})`)
+                .should('exist')  
+                .and('be.visible'); 
+            }
+        });
+    });
+
+    describe("Planet Page Interaction", () => {
+        it('should load the Planet page and return to the main page when clicking the close button', () => {
+            cy.get('#planetIcon > .material-icons')
+              .should('exist')
+              .and('be.visible')
+              .click();    
+            cy.get('#planet-iframe')
+              .should('be.visible');
+        });
+    });
+
+});

cypress/fixtures/example.json

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+{
+  "name": "Using fixtures to represent data",
+  "email": "[email protected]",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

cypress/support/commands.js

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+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })

cypress/support/e2e.js

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+// ***********************************************************
+// This example support/e2e.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'