Mailspring/spec/services/inline-style-transformer-spec.coffee

InlineStyleTransformer = require '../../src/services/inline-style-transformer'
{ipcRenderer} = require 'electron'

describe "InlineStyleTransformer", ->
  describe "run", ->
    beforeEach ->
      spyOn(ipcRenderer, 'send')
      spyOn(InlineStyleTransformer, '_injectUserAgentStyles').andCallFake (input) =>
        return input
      InlineStyleTransformer._inlineStylePromises = {}

    it "should return a Promise", ->
      expect(InlineStyleTransformer.run("asd") instanceof Promise).toBe(true)

    it "should resolve immediately if the html is empty", ->
      result = InlineStyleTransformer.run("")
      expect(result.isResolved()).toBe(true)

    it "should resolve immediately if there is no <style> tag in the source", ->
      result = InlineStyleTransformer.run("""
      This is some tricky HTML but there's no style tag here!
      <I wonder if it'll get into trouble < style >. <Ohmgerd.>
      """)
      expect(result.isResolved()).toBe(true)

    it "should properly remove comment tags used to prevent style tags from being displayed when they're not understood", ->
      result = InlineStyleTransformer.run("""
      <style>
      <!--table
      {mso-displayed-decimal-separator:"\.";
      mso-displayed-thousand-separator:"\,";}
      -->
      </style>
      <style><!--table
      {mso-displayed-decimal-separator:"\.";
      mso-displayed-thousand-separator:"\,";}
      --></style>
      """)
      expect(ipcRenderer.send.mostRecentCall.args[1].html).toEqual("""
      <style>table
      {mso-displayed-decimal-separator:".";
      mso-displayed-thousand-separator:",";}
      </style>
      <style>table
      {mso-displayed-decimal-separator:".";
      mso-displayed-thousand-separator:",";}
      </style>
      """)

    it "should add user agent styles", ->
      InlineStyleTransformer.run("""<style>
      <!--table
      	{mso-displayed-decimal-separator:"\.";
      	mso-displayed-thousand-separator:"\,";}
      -->
      </style>Other content goes here""")
      expect(InlineStyleTransformer._injectUserAgentStyles).toHaveBeenCalled()

    it "should fire inline-style-parse to the main process", ->
      InlineStyleTransformer.run("""<style>
      <!--table
      	{mso-displayed-decimal-separator:"\.";
      	mso-displayed-thousand-separator:"\,";}
      -->
      </style>Other content goes here""")
      expect(ipcRenderer.send).toHaveBeenCalled()
      expect(ipcRenderer.send.mostRecentCall.args[0]).toEqual('inline-style-parse')