diff --git a/src/copy.coffee b/src/copy.coffee
index 42bfb0b..de6aef2 100644
--- a/src/copy.coffee
+++ b/src/copy.coffee
@@ -58,11 +58,11 @@ copy = module.exports.async = (source, target, options, cb, depth = 0) ->
         mkdirs.async path.dirname(target), (err) ->
           return cb err if err
           # copy the file
-          debug "copying file #{source} to #{target}"
           fs.exists target, (exists) ->
             if exists and not (options.overwrite or options.ignore)
               return cb new Error "Target file already exists."
             if not exists or options.overwrite
+              debug "copying file #{source} to #{target}"
               return copyFile source, stats, target, cb
             cb()
       else if stats.isSymbolicLink()
@@ -131,6 +131,7 @@ copySync = module.exports.sync = (source, target, options = {}, depth = 0) ->
     if exists and not (options.overwrite or options.ignore)
       throw new Error "Target file already exists."
     if not exists or options.overwrite
+      debug "copying file #{source} to #{target}"
       return copyFileSync source, stats, target
   else if stats.isSymbolicLink()
     return unless ok
@@ -138,6 +139,7 @@ copySync = module.exports.sync = (source, target, options = {}, depth = 0) ->
     mkdirs.sync path.dirname(target)
     resolvedPath = fs.readlinkSync source
     # make the symlink
+    debug "copying link #{source} to #{target}"
     fs.symlinkSync resolvedPath, target
   else
     # source is directory
@@ -145,6 +147,7 @@ copySync = module.exports.sync = (source, target, options = {}, depth = 0) ->
     # copy directory
     mkdirs.sync target, stats.mode if ok
     # copy all files in directory
+    debug "copying directory #{source} to #{target}"
     for file in fs.readdirSync source
       copySync path.join(source, file), path.join(target, file), options, depth
 
diff --git a/src/filter.coffee b/src/filter.coffee
index 36eab3a..f9c404a 100644
--- a/src/filter.coffee
+++ b/src/filter.coffee
@@ -10,6 +10,8 @@ path = require 'path'
 async = require 'async'
 {execFile} = require 'child_process'
 chrono = require 'chrono-node'
+debug = require('debug')('fs:filter')
+util = require 'util'
 
 # Find files
 # -------------------------------------------------
@@ -26,8 +28,10 @@ chrono = require 'chrono-node'
 # * `callback(success)`
 #   The callback will be called with a boolean value showing if file is accepted.
 module.exports.async = (file, depth, options = {}, cb = -> ) ->
+  return unless options
+  debug "check #{file} for " + util.inspect options
   async.parallel [
-    (cb) -> skipDepth depth, options, cb
+    (cb) -> skipDepth file, depth, options, cb
     (cb) -> skipPath file, options, cb
     (cb) -> skipType file, options, cb
     (cb) -> skipSize file, options, cb
@@ -57,8 +61,10 @@ module.exports.async = (file, depth, options = {}, cb = -> ) ->
 #
 # The options are the same as in the asynchronous method.
 module.exports.sync = (file, depth, options = {}) ->
+  return unless options
+  debug "check #{file} for " + util.inspect options
   return false if skipTypeSync file, options
-  return false if skipDepthSync depth, options
+  return false if skipDepthSync file, depth, options
   return false if skipPathSync file, options
   return false if skipSizeSync file, options
   return false if skipTimeSync file, options
@@ -82,27 +88,38 @@ skipPathSync = (file, options) ->
   return false unless options.include or options.exclude
   if options.include
     if options.include instanceof RegExp
-      return true unless file.match options.include
+      unless file.match options.include
+        debug "skip #{file} because path not included"
+        return true
     else
       minimatch = require 'minimatch'
-      return true unless minimatch file, options.include, { matchBase: true }
+      unless minimatch file, options.include, { matchBase: true }
+        debug "skip #{file} because path not included"
+        return true
   if options.exclude
     if options.exclude instanceof RegExp
-      return true if file.match options.exclude
+      if file.match options.exclude
+        debug "skip #{file} because path excluded"
+        return true
     else
       minimatch = require 'minimatch'
-      return true if minimatch file, options.exclude, { matchBase: true }
+      if minimatch file, options.exclude, { matchBase: true }
+        debug "skip #{file} because path excluded"
+        return true
   return false
 
 # ### Test the file depth
 # The depth calculation has to be done in the traversing method this will only
 # check the value against the options.
-skipDepth = (depth, options, cb) ->
-  cb skipDepthSync depth, options
+skipDepth = (file, depth, options, cb) ->
+  cb skipDepthSync file, depth, options
 
-skipDepthSync = (depth, options) ->
-  return (options.mindepth? and options.mindepth > depth) or
+skipDepthSync = (file, depth, options) ->
+  skip = (options.mindepth? and options.mindepth > depth) or
     (options.maxdepth? and options.maxdepth < depth)
+  debug "skip #{file} because not in specified depth" if skip
+  return skip
+
 
 # ### Test the file type
 skipType = (file, options, cb) ->
@@ -112,15 +129,20 @@ skipType = (file, options, cb) ->
     return cb err if err
     switch options.type
       when 'file', 'f'
-        return cb not stats.isFile()
+        return cb() if stats.isFile()
+        debug "skip #{file} because not a file entry"
       when 'directory', 'dir', 'd'
-        return cb not stats.isDirectory()
+        return cb() if stats.isDirectory()
+        debug "skip #{file} because not a directory entry"
       when 'link', 'l'
-        return cb not stats.isSymbolicLink()
+        return cb() if stats.isSymbolicLink()
+        debug "skip #{file} because not a link entry"
       when 'fifo', 'pipe', 'p'
-        return cb not stats.isFIFO()
+        return cb() if stats.isFIFO()
+        debug "skip #{file} because not a FIFO entry"
       when 'socket', 's'
-        return cb not stats.isSocket()
+        return cb() if stats.isSocket()
+        debug "skip #{file} because not a socket entry"
     return cb true
 
 skipTypeSync = (file, options) ->
@@ -129,15 +151,20 @@ skipTypeSync = (file, options) ->
   stats = stat file
   switch options.type
     when 'file', 'f'
-      return not stats.isFile()
+      return if stats.isFile()
+      debug "skip #{file} because not a file entry"
     when 'directory', 'dir', 'd'
-      return not stats.isDirectory()
+      return if stats.isDirectory()
+      debug "skip #{file} because not a directory entry"
     when 'link', 'l'
-      return not stats.isSymbolicLink()
+      return if stats.isSymbolicLink()
+      debug "skip #{file} because not a link entry"
     when 'fifo', 'pipe', 'p'
-      return not stats.isFIFO()
+      return if stats.isFIFO()
+      debug "skip #{file} because not a FIFO entry"
     when 'socket', 's'
-      return not stats.isSocket()
+      return if stats.isSocket()
+      debug "skip #{file} because not a socket entry"
   return true
 
 # ### Test for filesize
@@ -160,6 +187,7 @@ skipSize = (file, options, cb) ->
     return cb err if err
     skip = (options.minsize? and options.minsize > stats.size) or
       (options.maxsize? and options.maxsize < stats.size)
+    debug "skip #{file} because size mismatch" if skip
     cb skip
 
 skipSizeSync = (file, options) ->
@@ -168,8 +196,10 @@ skipSizeSync = (file, options) ->
   options.maxsize = sizeHumanToInt options.maxsize if options.maxsize
   stat = if options.dereference? then fs.statSync else fs.lstatSync
   stats = stat file
-  return (options.minsize? and options.minsize > stats.size) or
+  skip = (options.minsize? and options.minsize > stats.size) or
     (options.maxsize? and options.maxsize < stats.size)
+  debug "skip #{file} because size mismatch" if skip
+  return skip
 
 # ### Check the owwner and group
 userToUid = (user, cb) ->
@@ -220,7 +250,9 @@ skipOwner = (file, options, cb) ->
       stat file, (err, stats) ->
         return cb err if err
     #    console.log file, uid, gid, stats.uid, stats.gid
-        cb (uid and uid is not stats.uid) or (gid and gid is not stats.gid)
+        skip = (uid and uid is not stats.uid) or (gid and gid is not stats.gid)
+        debug "skip #{file} because owner mismatch" if skip
+        cb skip
 
 skipOwnerSync = (file, options) ->
   return false unless options.user or options.group
@@ -229,7 +261,9 @@ skipOwnerSync = (file, options) ->
   stat = if options.dereference? then fs.statSync else fs.lstatSync
   stats = stat file
 #  console.log file, uid, gid, stats.uid, stats.gid
-  return (uid and uid is not stats.uid) or (gid and gid is not stats.gid)
+  skip = (uid and uid is not stats.uid) or (gid and gid is not stats.gid)
+  debug "skip #{file} because owner mismatch" if skip
+  return skip
 
 
 # ### User provided test
@@ -238,11 +272,14 @@ skipOwnerSync = (file, options) ->
 skipFunction = (file, options, cb) ->
   return cb() unless options.test or typeof options.test is not 'function'
   options.test file, options, (ok) ->
+    debug "skip #{file} by user function" unless ok
     cb not ok
 
 skipFunctionSync = (file, options) ->
   return false unless options.test or typeof options.test is not 'function'
-  return not options.test file, options
+  ok = options.test file, options
+  debug "skip #{file} by user function" unless ok
+  return not ok
 
 # ### Check file times
 # All timestamps maybe checked with before and after to select the files.
@@ -275,6 +312,7 @@ skipTime = (file, options, cb) ->
 #    console.log file, stats
     skip = not timeCheck stats, options
 #    console.log file, skip
+    debug "skip #{file} because out of time range" if skip
     cb skip
 
 skipTimeSync = (file, options) ->
@@ -285,4 +323,6 @@ skipTimeSync = (file, options) ->
   return false unless used
   stat = if options.dereference? then fs.statSync else fs.lstatSync
   stats = stat file
-  return not timeCheck stats, options
+  skip = not timeCheck stats, options
+  debug "skip #{file} because out of time range" if skip
+  return skip
\ No newline at end of file
diff --git a/src/move.coffee b/src/move.coffee
index 108c93a..8e12aee 100644
--- a/src/move.coffee
+++ b/src/move.coffee
@@ -42,7 +42,7 @@ module.exports.async = (source, target, options = {}, cb = ->) ->
   if typeof options is 'function' or not options
     cb = options ? ->
     options = {}
-  debug "Move filepath #{source} to #{target}."
+  debug "move filepath #{source} to #{target}."
   # collect methods to run
   async.series [
     # remove old target first
@@ -98,7 +98,7 @@ copyRemove = (source, target, options, cb) ->
 # * `Error`
 #   If anything out of order happened.
 module.exports.sync = (source, target, options = {}) ->
-  debug "Move filepath #{source} to #{target}."
+  debug "move filepath #{source} to #{target}."
   # remove old target first
   if options.clean
     remove.sync target
diff --git a/src/remove.coffee b/src/remove.coffee
index efa5bb4..dff0f2c 100644
--- a/src/remove.coffee
+++ b/src/remove.coffee
@@ -119,11 +119,13 @@ removeSync = module.exports.sync = (file, options = {}, depth = 0) ->
   if stats.isFile()
     return unless ok
     # remove file
+    debug "removing file #{file}"
     fs.unlinkSync file
     return file
   else if stats.isSymbolicLink()
     return unless ok
     # remove symbolic link
+    debug "removing link #{file}"
     fs.unlinkSync file
     return file
   else if stats.isDirectory()
@@ -131,6 +133,7 @@ removeSync = module.exports.sync = (file, options = {}, depth = 0) ->
     dir = file
     depth++
     # if this dir should be removed, use no filtering for the containing parts
+    debug "removing directory #{file}"
     options = {} if ok
     files = fs.readdirSync file
     # copy all files in directory
diff --git a/test/mocha/move.coffee b/test/mocha/move.coffee
index 93fcc62..2f80ebc 100644
--- a/test/mocha/move.coffee
+++ b/test/mocha/move.coffee
@@ -73,9 +73,9 @@ describe "Move", ->
         expect(err, 'error').to.exist
         cb()
 
-    it.only "should move dir with filter", (cb) ->
+    it "should move dir with filter", (cb) ->
       fs.move 'test/temp/dir1', 'test/temp/dir4',
-        include: '*1'
+        include: '*le11'
       , (err) ->
         expect(err, 'error').to.not.exist
         expect(fs.existsSync('test/temp/dir4'), 'new dir').to.be.true
@@ -151,7 +151,7 @@ describe "Move", ->
 
     it "should move dir with filter", ->
       fs.moveSync 'test/temp/dir1', 'test/temp/dir4',
-        include: '*le1'
+        include: '*le11'
       expect(fs.existsSync('test/temp/dir4'), 'new dir').to.be.true
       expect(fs.existsSync('test/temp/dir1'), 'old dir').to.be.true
       expect(fs.readdirSync('test/temp/dir4'), 'new dir').to.deep.equal ['file11']
diff --git a/test/mocha/remove.coffee b/test/mocha/remove.coffee
index e1eed60..5a4131f 100644
--- a/test/mocha/remove.coffee
+++ b/test/mocha/remove.coffee
@@ -8,7 +8,7 @@ expect = chai.expect
 
 describe "Remove", ->
 
-  fs = require '../../lib/index'
+  fs = require '../../src/index'
 
   beforeEach (cb) ->
     exec 'mkdir -p test/temp/dir1', ->