Add missing tests for component

server/views/components/expandableComment/expandableComment.test.ts

@@ -0,0 +1,46 @@
+import nunjucks, { Template } from 'nunjucks'
+import * as cheerio from 'cheerio'
+import { registerNunjucks } from '../../../utils/nunjucksSetup'
+
+describe('Expandable comment component', () => {
+  const njkEnv = registerNunjucks()
+  const templateString = `
+{%- from "components/expandableComment/macro.njk" import bapvExpandableComment -%}
+{{- bapvExpandableComment(comment) -}}`
+
+  let compiledTemplate: Template
+  let viewContext: Record<string, unknown>
+
+  beforeEach(() => {
+    viewContext = {}
+  })
+
+  it('should handle missing input', () => {
+    compiledTemplate = nunjucks.compile(templateString, njkEnv)
+    const $ = cheerio.load(compiledTemplate.render(viewContext))
+    expect($('body').html()).toBe('')
+  })
+
+  it('should trim input and not render additional markup if no newline within the text', () => {
+    viewContext = {
+      comment: { text: ' \na string with no newline in the text \r\n' },
+    }
+    compiledTemplate = nunjucks.compile(templateString, njkEnv)
+    const $ = cheerio.load(compiledTemplate.render(viewContext))
+    expect($('body').html().trim()).toBe('a string with no newline in the text')
+  })
+
+  it('should split on first newline and add expandable comment markup', () => {
+    viewContext = {
+      comment: { text: 'line one\nline two\nline three' },
+    }
+    compiledTemplate = nunjucks.compile(templateString, njkEnv)
+    const $ = cheerio.load(compiledTemplate.render(viewContext))
+
+    expect($('.bapv-expandable-comment').length).toBe(1)
+    expect($('.bapv-expandable-comment__first-line').text()).toBe('line one')
+    expect($('.bapv-expandable-comment__show').length).toBe(1)
+    expect($('.bapv-expandable-comment__full-comment').text()).toBe('line two\nline three')
+    expect($('.bapv-expandable-comment__hide').length).toBe(1)
+  })
+})