Add a first Cypress test

Author: joeyates

cypress/config.js

@@ -0,0 +1,7 @@
+const { defineConfig } = require('cypress')
+
+module.exports = defineConfig({
+  e2e: {
+    supportFile: false
+  }
+})

cypress/docker/cypress.Dockerfile

@@ -0,0 +1,10 @@
+FROM cypress/included:10.9.0
+
+WORKDIR /app
+
+# Suppress most Cypress output
+# ENV CI=1
+
+# CMD ["cypress run"]
+# CMD ["bash"]
+ENTRYPOINT ["bash"]

cypress/docker/docker-compose.yml

@@ -13,3 +13,16 @@ services:
       - "8080:9080"
     volumes:
       - ../..:/app
+
+  cypress:
+    image: cypress
+    build:
+      dockerfile: ./cypress/docker/cypress.Dockerfile
+      context: ../..
+    container_name: cypress
+    stdin_open: true
+    tty: true
+    environment:
+      - CYPRESS_baseUrl=http://webserver:9080
+    volumes:
+      - ../..:/app

cypress/e2e/slideshow.cy.js

@@ -0,0 +1,11 @@
+context('Without a config parameter', () => {
+  beforeEach(() => {
+    cy.visit('/')
+  })
+
+  it('shows an error', () => {
+    cy.get('#viewer').should(e => {
+      expect(e).to.contain('supply a config')
+    })
+  })
+})