add send test of e2e feature send coins

e2e-tests/cypress/e2e/SendCoins.feature

@@ -0,0 +1,20 @@
+Feature: Send coins
+  As a user
+  I want to send and receive GDD
+  I want to see transaction details on overview and transactions pages
+
+  # Background:
+  #   Given the following "users" are in the database:
+  #     | email                  | password | name               |
+  #     | bob@baumeister.de      | Aa12345_ | Bob Baumeister     |
+  #     | raeuber@hotzenplotz.de | Aa12345_ | Räuber Hotzenplotz |
+
+  Scenario: Send GDD to other user
+    Given the user is logged in as "bob@baumeister.de" "Aa12345_"
+    And the user navigates to page "/send"
+    When the user fills the send form with "raeuber@hotzenplotz.de" "120,50" "Some memo text"
+    And the user submits the send form
+    Then the transaction details are presented for confirmation
+    When the user submits the transaction by confirming
+    Then the transaction details are displayed on the transcations page
+

e2e-tests/cypress/support/step_definitions/send_coin_steps.ts

@@ -0,0 +1,60 @@
+import { And, Then, When } from '@badeball/cypress-cucumber-preprocessor'
+import { SendPage } from '../../e2e/models/SendPage'
+
+const sendPage = new SendPage()
+
+When(
+  'the user fills the send form with {string} {string} {string}',
+  (email: string, amount: string, memoText: string) => {
+    sendPage.enterReceiverEmail(email)
+    sendPage.enterAmount(amount)
+    sendPage.enterMemoText(memoText)
+  }
+)
+
+And('the user submits the send form', () => {
+  sendPage.submit()
+  cy.get('.transaction-confirm-send').should('be.visible')
+})
+
+
+Then('the transaction details are presented for confirmation', () => {
+  cy.get('.transaction-confirm-send').contains('raeuber@hotzenplotz.de')
+  cy.get('.transaction-confirm-send').contains('+ 120,50 GDD')
+  cy.get('.transaction-confirm-send').contains('Some memo text')
+  cy.get('.transaction-confirm-send').contains('+ 515,11 GDD')
+  cy.get('.transaction-confirm-send').contains('− 120,50 GDD')
+  cy.get('.transaction-confirm-send').contains('+ 394,61 GDD')
+})
+
+When('the user submits the transaction by confirming', () => {
+  cy.intercept({
+    method: 'POST',
+    url: '/graphql',
+    hostname: 'localhost',
+  }).as('sendCoins')
+
+  sendPage.submit()
+
+  cy.wait('@sendCoins').then((interception) => {
+    cy.wrap(interception.response?.statusCode).should('eq', 200)
+    cy.wrap(interception.request.body)
+      .should('have.property', 'query', `mutation ($identifier: String!, $amount: Decimal!, $memo: String!) {
+  sendCoins(identifier: $identifier, amount: $amount, memo: $memo)
+}
+`   )
+    cy.wrap(interception.response?.body)
+      .should('have.nested.property', 'data.sendCoins')
+      .and('equal', true)
+  })
+  cy.get('[data-test="send-transaction-success-text"]').should('be.visible')
+  cy.get('.rightside-last-transactions').should('be.visible')
+  cy.get('.align-items-center').contains('Räuber Hotzenplotz')
+  cy.get('.align-items-center').contains('− 120,50 GDD')
+})
+
+Then('the transaction details are displayed on the transcations page', () => {
+  cy.visit('/transactions')
+  cy.get('.test-list-group-item').contains('Räuber Hotzenplotz')
+  cy.get('.test-list-group-item').contains('− 120,50 GDD')
+})