diff --git a/.codeclimate.yml b/.codeclimate.yml
index 321f96c..5e877f4 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -2,5 +2,8 @@ engines:
   eslint:
     enabled: true
     channel: "eslint-3"
+ratings:
+  paths:
+  - "lib/**/*.js"
 exclude_paths:
 - "docs/"
diff --git a/.gitignore b/.gitignore
index 275d710..7e4d587 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 node_modules/
+coverage/
 .idea/
 .*.swp
diff --git a/.istanbul.yml b/.istanbul.yml
new file mode 100644
index 0000000..5ea2bdd
--- /dev/null
+++ b/.istanbul.yml
@@ -0,0 +1,6 @@
+check:
+  global:
+    statements: 100
+    lines: 100
+    branches: 100
+    functions: 100
diff --git a/.travis.yml b/.travis.yml
index d9f1943..ad06c76 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,3 +16,8 @@ before_install:
   # Update Node.js modules
   - "test ! -d node_modules || npm prune"
   - "test ! -d node_modules || npm rebuild"
+addons:
+  code_climate:
+    repo_token: ca200a6930ee90adbc4192a3bdb9f60dccdae00cb78f9880a2841d6b
+after_success:
+  - codeclimate-test-reporter < coverage/lcov.info
diff --git a/lib/tmp.js b/lib/tmp.js
index 1175a4f..de13299 100644
--- a/lib/tmp.js
+++ b/lib/tmp.js
@@ -97,10 +97,12 @@ function _isUndefined(obj) {
  * @private
  */
 function _parseArguments(options, callback) {
+  /* istanbul ignore else */
   if (typeof options == 'function') {
     return [{}, options];
   }
 
+  /* istanbul ignore else */
   if (_isUndefined(options)) {
     return [{}, callback];
   }
@@ -116,14 +118,17 @@ function _parseArguments(options, callback) {
  * @private
  */
 function _generateTmpName(opts) {
+  /* istanbul ignore else */
   if (opts.name) {
     return path.join(opts.dir || tmpDir, opts.name);
   }
 
   // mkstemps like template
+  /* istanbul ignore else */
   if (opts.template) {
     var template = opts.template;
     // make sure that we prepend the tmp path if none was given
+    /* istanbul ignore else */
     if (path.basename(template) == template)
       template = path.join(opts.dir || tmpDir, template);
     return template.replace(TEMPLATE_PATTERN, _randomChars(6));
@@ -153,9 +158,11 @@ function tmpName(options, callback) {
     cb = args[1],
     tries = opts.name ? 1 : opts.tries || DEFAULT_TRIES;
 
+  /* istanbul ignore else */
   if (isNaN(tries) || tries < 0)
     return cb(new Error('Invalid tries'));
 
+  /* istanbul ignore else */
   if (opts.template && !opts.template.match(TEMPLATE_PATTERN))
     return cb(new Error('Invalid template provided'));
 
@@ -164,7 +171,9 @@ function tmpName(options, callback) {
 
     // check whether the path exists then retry if needed
     fs.stat(name, function (err) {
+      /* istanbul ignore else */
       if (!err) {
+        /* istanbul ignore else */
         if (tries-- > 0) return _getUniqueName();
 
         return cb(new Error('Could not get a unique tmp filename, max tries reached ' + name));
@@ -188,9 +197,11 @@ function tmpNameSync(options) {
     opts = args[0],
     tries = opts.name ? 1 : opts.tries || DEFAULT_TRIES;
 
+  /* istanbul ignore else */
   if (isNaN(tries) || tries < 0)
     throw new Error('Invalid tries');
 
+  /* istanbul ignore else */
   if (opts.template && !opts.template.match(TEMPLATE_PATTERN))
     throw new Error('Invalid template provided');
 
@@ -222,14 +233,17 @@ function file(options, callback) {
 
   // gets a temporary filename
   tmpName(opts, function _tmpNameCreated(err, name) {
+    /* istanbul ignore else */
     if (err) return cb(err);
 
     // create and open the file
     fs.open(name, CREATE_FLAGS, opts.mode || FILE_MODE, function _fileCreated(err, fd) {
+      /* istanbul ignore else */
       if (err) return cb(err);
 
       if (opts.discardDescriptor) {
         return fs.close(fd, function _discardCallback(err) {
+          /* istanbul ignore else */
           if (err) {
             // Low probability, and the file exists, so this could be
             // ignored.  If it isn't we certainly need to unlink the
@@ -247,6 +261,7 @@ function file(options, callback) {
           cb(null, name, undefined, _prepareTmpFileRemoveCallback(name, -1, opts));
         });
       }
+      /* istanbul ignore else */
       if (opts.detachDescriptor) {
         return cb(null, name, fd, _prepareTmpFileRemoveCallback(name, -1, opts));
       }
@@ -272,6 +287,7 @@ function fileSync(options) {
   const discardOrDetachDescriptor = opts.discardDescriptor || opts.detachDescriptor;
   const name = tmpNameSync(opts);
   var fd = fs.openSync(name, CREATE_FLAGS, opts.mode || FILE_MODE);
+  /* istanbul ignore else */
   if (opts.discardDescriptor) {
     fs.closeSync(fd); 
     fd = undefined;
@@ -305,6 +321,7 @@ function _rmdirRecursiveSync(root) {
         stat = fs.lstatSync(file); // lstat so we don't recurse into symlinked directories
 
       if (stat.isDirectory()) {
+        /* istanbul ignore else */
         if (!deferred) {
           deferred = true;
           dirs.push(dir);
@@ -315,6 +332,7 @@ function _rmdirRecursiveSync(root) {
       }
     }
 
+    /* istanbul ignore else */
     if (!deferred) {
       fs.rmdirSync(dir);
     }
@@ -335,10 +353,12 @@ function dir(options, callback) {
 
   // gets a temporary filename
   tmpName(opts, function _tmpNameCreated(err, name) {
+    /* istanbul ignore else */
     if (err) return cb(err);
 
     // create the directory
     fs.mkdir(name, opts.mode || DIR_MODE, function _dirCreated(err) {
+      /* istanbul ignore else */
       if (err) return cb(err);
 
       cb(null, name, _prepareTmpDirRemoveCallback(name, opts));
@@ -379,6 +399,7 @@ function dirSync(options) {
 function _prepareTmpFileRemoveCallback(name, fd, opts) {
   const removeCallback = _prepareRemoveCallback(function _removeCallback(fdPath) {
     try {
+      /* istanbul ignore else */
       if (0 <= fdPath[0]) {
         fs.closeSync(fdPath[0]);
       }
@@ -387,6 +408,7 @@ function _prepareTmpFileRemoveCallback(name, fd, opts) {
       // under some node/windows related circumstances, a temporary file
       // may have not be created as expected or the file was already closed
       // by the user, in which case we will simply ignore the error
+      /* istanbul ignore else */
       if (!isEBADF(e) && !isENOENT(e)) {
         // reraise any unanticipated error
         throw e;
@@ -396,6 +418,7 @@ function _prepareTmpFileRemoveCallback(name, fd, opts) {
       fs.unlinkSync(fdPath[1]);
     }
     catch (e) {
+      /* istanbul ignore else */
       if (!isENOENT(e)) {
         // reraise any unanticipated error
         throw e;
@@ -403,6 +426,7 @@ function _prepareTmpFileRemoveCallback(name, fd, opts) {
     }
   }, [fd, name]);
 
+  /* istanbul ignore else */
   if (!opts.keep) {
     _removeObjects.unshift(removeCallback);
   }
@@ -422,6 +446,7 @@ function _prepareTmpDirRemoveCallback(name, opts) {
   const removeFunction = opts.unsafeCleanup ? _rmdirRecursiveSync : fs.rmdirSync.bind(fs);
   const removeCallback = _prepareRemoveCallback(removeFunction, name);
 
+  /* istanbul ignore else */
   if (!opts.keep) {
     _removeObjects.unshift(removeCallback);
   }
@@ -441,8 +466,10 @@ function _prepareRemoveCallback(removeFunction, arg) {
   var called = false;
 
   return function _cleanupCallback(next) {
+    /* istanbul ignore else */
     if (!called) {
       const index = _removeObjects.indexOf(_cleanupCallback);
+      /* istanbul ignore else */
       if (index >= 0) {
         _removeObjects.splice(index, 1);
       }
@@ -451,6 +478,7 @@ function _prepareRemoveCallback(removeFunction, arg) {
       removeFunction(arg);
     }
 
+    /* istanbul ignore else */
     if (next) next(null);
   };
 }
@@ -461,6 +489,7 @@ function _prepareRemoveCallback(removeFunction, arg) {
  * @private
  */
 function _garbageCollector() {
+  /* istanbul ignore else */
   if (!_gracefulCleanup) {
     return;
   }
@@ -541,13 +570,16 @@ function _safely_install_listener() {
   var existingListeners = [];
   for (var i = 0, length = listeners.length; i < length; i++) {
     var lstnr = listeners[i];
+    /* istanbul ignore else */
     if (lstnr.name == '_tmp$safe_listener' || _is_legacy_listener(lstnr)) {
+      /* istanbul ignore else */
       if (lstnr.name != '_uncaughtExceptionThrown') existingListeners.push(lstnr);
       process.removeListener(EVENT, lstnr);
     }
   }
 
   process.addListener(EVENT, function _tmp$safe_listener(data) {
+    /* istanbul ignore else */
     if (existingListeners.length) {
       for (var i = 0, length = existingListeners.length; i < length; i++) {
         existingListeners[i](data);
diff --git a/package-lock.json b/package-lock.json
index 136640c..8432e64 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,15 +1,117 @@
 {
   "name": "tmp",
-  "version": "0.0.33",
+  "version": "0.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "abbrev": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
+      "integrity": "sha1-kbR5JYinc4wl813W9jdSovh3YTU=",
+      "dev": true
+    },
+    "align-text": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
+      "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
+      "dev": true,
+      "requires": {
+        "kind-of": "3.2.2",
+        "longest": "1.0.1",
+        "repeat-string": "1.6.1"
+      }
+    },
+    "amdefine": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
+      "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
+      "dev": true
+    },
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
+    },
+    "argparse": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
+      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "1.0.3"
+      }
+    },
+    "asn1": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
+      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
+      "dev": true
+    },
+    "assert-plus": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
+      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
+      "dev": true
+    },
+    "async": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+      "dev": true
+    },
+    "aws-sign2": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
+      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
+      "dev": true
+    },
+    "aws4": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.6.0.tgz",
+      "integrity": "sha1-g+9cqGCysy5KDe7e6MdxudtXRx4=",
+      "dev": true
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
+    "bcrypt-pbkdf": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
+      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "tweetnacl": "0.14.5"
+      }
+    },
+    "bl": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-1.1.2.tgz",
+      "integrity": "sha1-/cqHGplxOqANGeO7ukHER4emU5g=",
+      "dev": true,
+      "requires": {
+        "readable-stream": "2.0.6"
+      }
+    },
+    "boom": {
+      "version": "2.10.1",
+      "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
+      "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "dev": true,
+      "requires": {
+        "hoek": "2.16.3"
+      }
+    },
     "brace-expansion": {
       "version": "1.1.8",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
@@ -26,6 +128,93 @@
       "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
       "dev": true
     },
+    "camelcase": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
+      "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
+      "dev": true,
+      "optional": true
+    },
+    "caseless": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.11.0.tgz",
+      "integrity": "sha1-cVuW6phBWTzDMGeSP17GDr2k99c=",
+      "dev": true
+    },
+    "center-align": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/center-align/-/center-align-0.1.3.tgz",
+      "integrity": "sha1-qg0yYptu6XIgBBHL1EYckHvCt60=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "align-text": "0.1.4",
+        "lazy-cache": "1.0.4"
+      }
+    },
+    "chalk": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "2.2.1",
+        "escape-string-regexp": "1.0.5",
+        "has-ansi": "2.0.0",
+        "strip-ansi": "3.0.1",
+        "supports-color": "2.0.0"
+      },
+      "dependencies": {
+        "supports-color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+          "dev": true
+        }
+      }
+    },
+    "cliui": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-2.1.0.tgz",
+      "integrity": "sha1-S0dXYP+AJkx2LDoXGQMukcf+oNE=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "center-align": "0.1.3",
+        "right-align": "0.1.3",
+        "wordwrap": "0.0.2"
+      },
+      "dependencies": {
+        "wordwrap": {
+          "version": "0.0.2",
+          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
+          "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
+          "dev": true,
+          "optional": true
+        }
+      }
+    },
+    "codeclimate-test-reporter": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/codeclimate-test-reporter/-/codeclimate-test-reporter-0.4.1.tgz",
+      "integrity": "sha1-nyD22C02qrmdIKvk9sc3L0xtGRU=",
+      "dev": true,
+      "requires": {
+        "async": "1.5.2",
+        "commander": "2.9.0",
+        "lcov-parse": "0.0.10",
+        "request": "2.74.0"
+      }
+    },
+    "combined-stream": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.5.tgz",
+      "integrity": "sha1-k4NwpXtKUd6ix3wV1cX9+JUWQAk=",
+      "dev": true,
+      "requires": {
+        "delayed-stream": "1.0.0"
+      }
+    },
     "commander": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
@@ -41,6 +230,38 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "dev": true
+    },
+    "cryptiles": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-2.0.5.tgz",
+      "integrity": "sha1-O9/s3GCBR8HGcgL6KR59ylnqo7g=",
+      "dev": true,
+      "requires": {
+        "boom": "2.10.1"
+      }
+    },
+    "dashdash": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
+      "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0"
+      },
+      "dependencies": {
+        "assert-plus": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+          "dev": true
+        }
+      }
+    },
     "debug": {
       "version": "2.6.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.0.tgz",
@@ -50,24 +271,162 @@
         "ms": "0.7.2"
       }
     },
+    "decamelize": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+      "dev": true,
+      "optional": true
+    },
+    "deep-is": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
+      "dev": true
+    },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
+      "dev": true
+    },
     "diff": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/diff/-/diff-3.2.0.tgz",
       "integrity": "sha1-yc45Okt8vQsFinJck98pkCeGj/k=",
       "dev": true
     },
+    "ecc-jsbn": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz",
+      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "jsbn": "0.1.1"
+      }
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
       "dev": true
     },
+    "escodegen": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.8.1.tgz",
+      "integrity": "sha1-WltTr0aTEQvrsIZ6o0MN07cKEBg=",
+      "dev": true,
+      "requires": {
+        "esprima": "2.7.3",
+        "estraverse": "1.9.3",
+        "esutils": "2.0.2",
+        "optionator": "0.8.2",
+        "source-map": "0.2.0"
+      }
+    },
+    "esprima": {
+      "version": "2.7.3",
+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
+      "integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
+      "dev": true
+    },
+    "estraverse": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-1.9.3.tgz",
+      "integrity": "sha1-r2fy3JIlgkFZUJJgkaQAXSnJu0Q=",
+      "dev": true
+    },
+    "esutils": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
+      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
+      "dev": true
+    },
+    "extend": {
+      "version": "3.0.1",
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+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
+      "integrity": "sha1-j5A0HmilPMySh4jaz80Rs265t44=",
+      "dev": true,
+      "requires": {
+        "core-util-is": "1.0.2",
+        "inherits": "2.0.3",
+        "isarray": "1.0.0",
+        "process-nextick-args": "1.0.7",
+        "string_decoder": "0.10.31",
+        "util-deprecate": "1.0.2"
+      }
+    },
+    "repeat-string": {
+      "version": "1.6.1",
+      "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
+      "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
+      "dev": true
+    },
+    "request": {
+      "version": "2.74.0",
+      "resolved": "https://registry.npmjs.org/request/-/request-2.74.0.tgz",
+      "integrity": "sha1-dpPKdou7DqXIzgjAhKRe+gW4kqs=",
+      "dev": true,
+      "requires": {
+        "aws-sign2": "0.6.0",
+        "aws4": "1.6.0",
+        "bl": "1.1.2",
+        "caseless": "0.11.0",
+        "combined-stream": "1.0.5",
+        "extend": "3.0.1",
+        "forever-agent": "0.6.1",
+        "form-data": "1.0.1",
+        "har-validator": "2.0.6",
+        "hawk": "3.1.3",
+        "http-signature": "1.1.1",
+        "is-typedarray": "1.0.0",
+        "isstream": "0.1.2",
+        "json-stringify-safe": "5.0.1",
+        "mime-types": "2.1.17",
+        "node-uuid": "1.4.8",
+        "oauth-sign": "0.8.2",
+        "qs": "6.2.3",
+        "stringstream": "0.0.5",
+        "tough-cookie": "2.3.3",
+        "tunnel-agent": "0.4.3"
+      }
+    },
+    "resolve": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
+      "integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
+      "dev": true
+    },
+    "right-align": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/right-align/-/right-align-0.1.3.tgz",
+      "integrity": "sha1-YTObci/mo1FWiSENJOFMlhSGE+8=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "align-text": "0.1.4"
+      }
+    },
+    "sntp": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/sntp/-/sntp-1.0.9.tgz",
+      "integrity": "sha1-ZUEYTMkK7qbG57NeJlkIJEPGYZg=",
+      "dev": true,
+      "requires": {
+        "hoek": "2.16.3"
+      }
+    },
+    "source-map": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.2.0.tgz",
+      "integrity": "sha1-2rc/vPwrqBm03gO9b26qSBZLP50=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "amdefine": "1.0.1"
+      }
+    },
+    "sprintf-js": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
+    },
+    "sshpk": {
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.13.1.tgz",
+      "integrity": "sha1-US322mKHFEMW3EwY/hzx2UBzm+M=",
+      "dev": true,
+      "requires": {
+        "asn1": "0.2.3",
+        "assert-plus": "1.0.0",
+        "bcrypt-pbkdf": "1.0.1",
+        "dashdash": "1.14.1",
+        "ecc-jsbn": "0.1.1",
+        "getpass": "0.1.7",
+        "jsbn": "0.1.1",
+        "tweetnacl": "0.14.5"
+      },
+      "dependencies": {
+        "assert-plus": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+          "dev": true
+        }
+      }
+    },
+    "string_decoder": {
+      "version": "0.10.31",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+      "dev": true
+    },
+    "stringstream": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
+      "integrity": "sha1-TkhM1N5aC7vuGORjB3EKioFiGHg=",
+      "dev": true
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "2.1.1"
+      }
+    },
     "supports-color": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.1.2.tgz",
@@ -268,11 +1134,136 @@
         "has-flag": "1.0.0"
       }
     },
+    "tough-cookie": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.3.tgz",
+      "integrity": "sha1-C2GKVWW23qkL80JdBNVe3EdadWE=",
+      "dev": true,
+      "requires": {
+        "punycode": "1.4.1"
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.4.3.tgz",
+      "integrity": "sha1-Y3PbdpCf5XDgjXNYM2Xtgop07us=",
+      "dev": true
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "dev": true,
+      "optional": true
+    },
+    "type-check": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
+      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "dev": true,
+      "requires": {
+        "prelude-ls": "1.1.2"
+      }
+    },
+    "uglify-js": {
+      "version": "2.8.29",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-2.8.29.tgz",
+      "integrity": "sha1-KcVzMUgFe7Th913zW3qcty5qWd0=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "source-map": "0.5.7",
+        "uglify-to-browserify": "1.0.2",
+        "yargs": "3.10.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.5.7",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+          "dev": true,
+          "optional": true
+        }
+      }
+    },
+    "uglify-to-browserify": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
+      "integrity": "sha1-bgkk1r2mta/jSeOabWMoUKD4grc=",
+      "dev": true,
+      "optional": true
+    },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "dev": true
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "1.3.0"
+      },
+      "dependencies": {
+        "assert-plus": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+          "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+          "dev": true
+        }
+      }
+    },
+    "which": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
+      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "dev": true,
+      "requires": {
+        "isexe": "2.0.0"
+      }
+    },
+    "window-size": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
+      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
+      "dev": true,
+      "optional": true
+    },
+    "wordwrap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
+    },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
+    },
+    "yargs": {
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+      "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "camelcase": "1.2.1",
+        "cliui": "2.1.0",
+        "decamelize": "1.2.0",
+        "window-size": "0.1.0"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index ddee70e..31bb3aa 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,8 @@
     "os-tmpdir": "~1.0.2"
   },
   "devDependencies": {
+    "codeclimate-test-reporter": "~0.4.0",
+    "istanbul": "~0.4.5",
     "mocha": "~3.4.2"
   },
   "main": "lib/tmp.js",
@@ -32,7 +34,8 @@
     "lib/"
   ],
   "scripts": {
-    "test": "mocha test/*-test.js",
+    "clean": "rm -Rf ./coverage",
+    "test": "istanbul cover ./node_modules/mocha/bin/_mocha --report none --print none --dir ./coverage/json -u exports -R test/*-test.js && istanbul report --root ./coverage/json html && istanbul report text-summary",
     "doc": "jsdoc -c .jsdoc.json"
   }
 }
diff --git a/test/child-process.js b/test/child-process.js
index 20c6c02..0f8faeb 100644
--- a/test/child-process.js
+++ b/test/child-process.js
@@ -41,6 +41,15 @@ function _do_spawn(command_args, cb) {
     stderrDone = false,
     stdoutDone = false;
 
+  if (process.env.running_under_istanbul) {
+    var
+      istanbul_path = path.join(__dirname, '..', 'node_modules', 'istanbul', 'lib', 'cli.js');
+    command_args = [
+      istanbul_path, 'cover', '--report' , 'none', '--print', 'none',
+      '--dir', path.join('coverage', 'json'), '--include-pid',
+      command_args[0], '--', command_args[1]
+    ];
+  }
   // spawn doesn’t have the quoting problems that exec does,
   // especially when going for Windows portability.
   child = spawn(node_path, command_args);