pulsar/spec/compile-cache-spec.coffee
2016-12-01 14:02:11 -08:00

116 lines
5.0 KiB
CoffeeScript

path = require 'path'
temp = require('temp').track()
Babel = require 'babel-core'
CoffeeScript = require 'coffee-script'
{TypeScriptSimple} = require 'typescript-simple'
CSON = require 'season'
CompileCache = require '../src/compile-cache'
describe 'CompileCache', ->
[atomHome, fixtures] = []
beforeEach ->
fixtures = atom.project.getPaths()[0]
atomHome = temp.mkdirSync('fake-atom-home')
CSON.setCacheDir(null)
CompileCache.resetCacheStats()
spyOn(Babel, 'transform').andReturn {code: 'the-babel-code'}
spyOn(CoffeeScript, 'compile').andReturn 'the-coffee-code'
spyOn(TypeScriptSimple::, 'compile').andReturn 'the-typescript-code'
afterEach ->
CompileCache.setAtomHomeDirectory(process.env.ATOM_HOME)
CSON.setCacheDir(CompileCache.getCacheDirectory())
temp.cleanupSync()
describe 'addPathToCache(filePath, atomHome)', ->
describe 'when the given file is plain javascript', ->
it 'does not compile or cache the file', ->
CompileCache.addPathToCache(path.join(fixtures, 'sample.js'), atomHome)
expect(CompileCache.getCacheStats()['.js']).toEqual {hits: 0, misses: 0}
describe 'when the given file uses babel', ->
it 'compiles the file with babel and caches it', ->
CompileCache.addPathToCache(path.join(fixtures, 'babel', 'babel-comment.js'), atomHome)
expect(CompileCache.getCacheStats()['.js']).toEqual {hits: 0, misses: 1}
expect(Babel.transform.callCount).toBe 1
CompileCache.addPathToCache(path.join(fixtures, 'babel', 'babel-comment.js'), atomHome)
expect(CompileCache.getCacheStats()['.js']).toEqual {hits: 1, misses: 1}
expect(Babel.transform.callCount).toBe 1
describe 'when the given file is coffee-script', ->
it 'compiles the file with coffee-script and caches it', ->
CompileCache.addPathToCache(path.join(fixtures, 'coffee.coffee'), atomHome)
expect(CompileCache.getCacheStats()['.coffee']).toEqual {hits: 0, misses: 1}
expect(CoffeeScript.compile.callCount).toBe 1
CompileCache.addPathToCache(path.join(fixtures, 'coffee.coffee'), atomHome)
expect(CompileCache.getCacheStats()['.coffee']).toEqual {hits: 1, misses: 1}
expect(CoffeeScript.compile.callCount).toBe 1
describe 'when the given file is typescript', ->
it 'compiles the file with typescript and caches it', ->
CompileCache.addPathToCache(path.join(fixtures, 'typescript', 'valid.ts'), atomHome)
expect(CompileCache.getCacheStats()['.ts']).toEqual {hits: 0, misses: 1}
expect(TypeScriptSimple::compile.callCount).toBe 1
CompileCache.addPathToCache(path.join(fixtures, 'typescript', 'valid.ts'), atomHome)
expect(CompileCache.getCacheStats()['.ts']).toEqual {hits: 1, misses: 1}
expect(TypeScriptSimple::compile.callCount).toBe 1
describe 'when the given file is CSON', ->
it 'compiles the file to JSON and caches it', ->
spyOn(CSON, 'setCacheDir').andCallThrough()
spyOn(CSON, 'readFileSync').andCallThrough()
CompileCache.addPathToCache(path.join(fixtures, 'cson.cson'), atomHome)
expect(CSON.readFileSync).toHaveBeenCalledWith(path.join(fixtures, 'cson.cson'))
expect(CSON.setCacheDir).toHaveBeenCalledWith(path.join(atomHome, '/compile-cache'))
CSON.readFileSync.reset()
CSON.setCacheDir.reset()
CompileCache.addPathToCache(path.join(fixtures, 'cson.cson'), atomHome)
expect(CSON.readFileSync).toHaveBeenCalledWith(path.join(fixtures, 'cson.cson'))
expect(CSON.setCacheDir).not.toHaveBeenCalled()
describe 'overriding Error.prepareStackTrace', ->
it 'removes the override on the next tick, and always assigns the raw stack', ->
return if process.platform is 'win32' # Flakey Error.stack contents on Win32
Error.prepareStackTrace = -> 'a-stack-trace'
error = new Error("Oops")
expect(error.stack).toBe 'a-stack-trace'
expect(Array.isArray(error.getRawStack())).toBe true
waits(1)
runs ->
error = new Error("Oops again")
expect(error.stack).toContain('compile-cache-spec.coffee')
expect(Array.isArray(error.getRawStack())).toBe true
it 'does not infinitely loop when the original prepareStackTrace value is reassigned', ->
originalPrepareStackTrace = Error.prepareStackTrace
Error.prepareStackTrace = -> 'a-stack-trace'
Error.prepareStackTrace = originalPrepareStackTrace
error = new Error('Oops')
expect(error.stack).toContain('compile-cache-spec.coffee')
expect(Array.isArray(error.getRawStack())).toBe true
it 'does not infinitely loop when the assigned prepareStackTrace calls the original prepareStackTrace', ->
originalPrepareStackTrace = Error.prepareStackTrace
Error.prepareStackTrace = (error, stack) ->
error.foo = 'bar'
originalPrepareStackTrace(error, stack)
error = new Error('Oops')
expect(error.stack).toContain('compile-cache-spec.coffee')
expect(error.foo).toBe('bar')
expect(Array.isArray(error.getRawStack())).toBe true