test(web-app): add e2e fetch process

It tests the normal request case of timeserie

web-app/cypress/e2e/fetch_process.cy.ts

@@ -0,0 +1,16 @@
+/// <reference types="cypress" />
+
+describe("Test fetch measurments button in the main page", () => {
+  beforeEach(() => {
+    cy.visit("http://localhost:8080/");
+  });
+
+  it("Fetch timeseries with valid user-room-device", () => {
+    cy.get('[data-cy="new-measurements-button"]').should("be.visible");
+    // keep default mulitselector value for the test
+    cy.get('[data-cy="new-measurements-button"]').click();
+
+    cy.get('[data-cy="main-chart"]').should("be.visible");
+    cy.get('[data-cy="no-data-display"]').should("not.exist");
+  });
+});