Bust file's digest cache when writing to the file

package.json

@@ -2,7 +2,7 @@
   "main": "./lib/main.js",
   "name": "pathwatcher",
   "description": "Watch files and directories for changes",
-  "version": "4.4.4",
+  "version": "4.4.5-0",
   "licenses": [
     {
       "type": "MIT",

spec/file-spec.coffee

@@ -3,6 +3,7 @@ fs = require 'fs-plus'
 temp = require 'temp'
 File = require '../lib/file'
 PathWatcher = require '../lib/main'
+Q = require 'q'
 
 describe 'File', ->
   [filePath, file] = []
@@ -49,6 +50,26 @@ describe 'File', ->
       expect(file.getDigestSync()).toBe 'da39a3ee5e6b4b0d3255bfef95601890afd80709'
       expect(file.readSync.callCount).toBe 1
 
+      file.writeSync('x')
+
+      expect(file.getDigestSync()).toBe '11f6ad8ec52a2984abaafd7c3b516503785c2072'
+      expect(file.readSync.callCount).toBe 1
+      expect(file.getDigestSync()).toBe '11f6ad8ec52a2984abaafd7c3b516503785c2072'
+      expect(file.readSync.callCount).toBe 1
+
+      readDeferred = Q.defer()
+      spyOn(file, 'read').andReturn(readDeferred.promise)
+
+      changed = false
+      file.onDidChange -> changed = true
+      fs.writeFileSync(filePath, 'y')
+
+      waitsFor -> file.getDigestSync() is '95cb0bfd2977c761298d9624e4b4d4c72a39974a'
+
+      runs ->
+        readDeferred.resolve("y")
+        expect(file.getDigestSync()).toBe '95cb0bfd2977c761298d9624e4b4d4c72a39974a'
+
   describe '::create()', ->
     [callback, nonExistentFile, tempDir] = []
 

src/file.coffee

@@ -291,6 +291,7 @@ class File
     @exists().then (previouslyExisted) =>
       @writeFile(@getPath(), text).then =>
         @cachedContents = text
+        @setDigest(text)
         @subscribeToNativeChangeEvents() if not previouslyExisted and @hasSubscriptions()
         undefined
 
@@ -303,6 +304,7 @@ class File
     previouslyExisted = @existsSync()
     @writeFileWithPrivilegeEscalationSync(@getPath(), text)
     @cachedContents = text
+    @setDigest(text)
     @subscribeToNativeChangeEvents() if not previouslyExisted and @hasSubscriptions()
     undefined
 
@@ -346,6 +348,8 @@ class File
         @emitter.emit 'did-rename'
       when 'change', 'resurrect'
         oldContents = @cachedContents
+        @cachedContents = null
+        @digest = null
         handleReadError = (error) =>
           # We cant read the file, so we GTFO on the watch
           @unsubscribeFromNativeChangeEvents()