diff --git a/.travis.yml b/.travis.yml
index 4cd2b62..1d195d4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,3 +8,4 @@ before_install:
 
 script:
     - npm audit
+    - node_modules/.bin/intern
diff --git a/intern.json b/intern.json
new file mode 100644
index 0000000..5c15e87
--- /dev/null
+++ b/intern.json
@@ -0,0 +1,13 @@
+{
+    "suites": "tests/*.js",
+    "environments": [
+        "node"
+    ],
+    "coverage": [
+        "main/**/*.js",
+        "main/*.js",
+        "browser/js/*.js",
+        "!main/autoupdater.js"
+    ],
+    "reporters+": ["lcov", "runner"]
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 6556f74..40413b7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,32 +10,287 @@
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       "dev": true
     },
+    "@theintern/common": {
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+      "resolved": "https://registry.npmjs.org/@theintern/common/-/common-0.1.3.tgz",
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+      "dev": true,
+      "requires": {
+        "axios": "~0.18.0",
+        "tslib": "~1.9.3"
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+    },
+    "@theintern/digdug": {
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+      "resolved": "https://registry.npmjs.org/@theintern/digdug/-/digdug-2.2.3.tgz",
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+      "dev": true,
+      "requires": {
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+        "command-exists": "~1.2.6",
+        "decompress": "~4.2.0",
+        "semver": "~5.5.0",
+        "tslib": "~1.9.3"
+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
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+          "dev": true
+        }
+      }
+    },
+    "@theintern/leadfoot": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/@theintern/leadfoot/-/leadfoot-2.2.3.tgz",
+      "integrity": "sha512-1RplLnIWjQ+BqliMkfO0Jq7uMyPbExjs9tCQPC/c5ueLYYqHW+r+L92EWuNNRDl6TRJ5Uv3O+lqpzlhDaVn08w==",
+      "dev": true,
+      "requires": {
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+        "jszip": "~3.1.5",
+        "tslib": "~1.9.3"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/@types/babel-types/-/babel-types-7.0.4.tgz",
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+      "requires": {
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+        "@types/mime": "*"
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+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/@types/shell-quote/-/shell-quote-1.6.0.tgz",
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+      "dev": true
+    },
+    "@types/statuses": {
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+      "resolved": "https://registry.npmjs.org/@types/statuses/-/statuses-1.3.0.tgz",
+      "integrity": "sha512-E0QjLIX1q+ThpQ7HLh5SjMtUtPl0tQjxoLMPwJtFDFtH7C0qdXmCgNcBplZ9m24+sOoQBpc0PT/aMW4jlm3K6g==",
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+    },
+    "@types/ws": {
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+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-4.0.2.tgz",
+      "integrity": "sha512-tlDVFHCcJdNqYgjGNDPDCo4tNqhFMymIAdJCcykFbdhYr4X6vD7IlMxY0t3/k6Pfup68YNkMTpRfLKTRuKDmnQ==",
+      "dev": true,
+      "requires": {
+        "@types/events": "*",
+        "@types/node": "*"
+      }
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
       "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
     },
+    "accepts": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
+      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
+      "dev": true,
+      "requires": {
+        "mime-types": "~2.1.18",
+        "negotiator": "0.6.1"
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     "acorn": {
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       "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
@@ -60,14 +315,14 @@
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-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
-      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
+      "version": "6.6.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.6.2.tgz",
+      "integrity": "sha512-FBHEW6Jf5TB9MGBgUUA9XHkTbjXYfAUjY43ACMfmdMRHniyoMHjHjzD50OK8LGDWQwp4rWEsIq5kEqq7rvIM1g==",
       "requires": {
-        "co": "^4.6.0",
-        "fast-deep-equal": "^1.0.0",
+        "fast-deep-equal": "^2.0.1",
         "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.3.0"
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
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     "ajv-keywords": {
@@ -98,12 +353,6 @@
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@@ -216,6 +465,17 @@
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+          "requires": {
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@@ -268,6 +528,26 @@
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           }
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+          "dev": true,
+          "requires": {
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+          }
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+        "fs-extra": {
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+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-6.0.1.tgz",
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+          "dev": true,
+          "requires": {
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+            "jsonfile": "^4.0.0",
+            "universalify": "^0.1.0"
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-      "integrity": "sha1-LCo/n4PmR2L9xF5s6sZRQoZCE9s=",
+      "version": "3.3.5",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
+      "integrity": "sha512-g+dpmgn+XBneLmXXo+sGlW5xQEt4ErkS3mgeN2GFbremYeMBSJKr9Wf2KJplQVaiPY/f7FN6atosWYNm9ovrYg==",
       "requires": {
         "sprintf-js": "^1.0.3",
         "util-deprecate": "^1.0.2"
@@ -7895,13 +9507,13 @@
       }
     },
     "unique-stream": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-2.2.1.tgz",
-      "integrity": "sha1-WqADz76Uxf+GbE59ZouxxNuts2k=",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-2.3.1.tgz",
+      "integrity": "sha512-2nY4TnBE70yoxHkDli7DMazpWiP7xMdCYqU2nBRO0UB+ZpEkGsSija7MvmvnZFUeC+mrgiUfcHSr3LmRFIg4+A==",
       "dev": true,
       "requires": {
-        "json-stable-stringify": "^1.0.0",
-        "through2-filter": "^2.0.0"
+        "json-stable-stringify-without-jsonify": "^1.0.1",
+        "through2-filter": "^3.0.0"
       }
     },
     "unique-string": {
@@ -7914,9 +9526,15 @@
       }
     },
     "universalify": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.1.tgz",
-      "integrity": "sha1-+nG63UQ3r0wUiEHjs7Fl+enlkLc="
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="
+    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=",
+      "dev": true
     },
     "unset-value": {
       "version": "1.0.0",
@@ -8004,17 +9622,8 @@
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
       "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
-      "dev": true,
       "requires": {
         "punycode": "^2.1.0"
-      },
-      "dependencies": {
-        "punycode": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-          "dev": true
-        }
       }
     },
     "urix": {
@@ -8033,13 +9642,10 @@
       }
     },
     "use": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/use/-/use-3.1.0.tgz",
-      "integrity": "sha512-6UJEQM/L+mzC3ZJNM56Q4DFGLX/evKGRg15UJHGB9X5j5Z3AFbgZvjUh2yq/UJUY4U5dh7Fal++XbNg1uzpRAw==",
-      "dev": true,
-      "requires": {
-        "kind-of": "^6.0.2"
-      }
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
+      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
+      "dev": true
     },
     "utf8-byte-length": {
       "version": "1.0.4",
@@ -8052,15 +9658,21 @@
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
+    "utils-merge": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=",
+      "dev": true
+    },
     "uuid": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.2.1.tgz",
-      "integrity": "sha512-jZnMwlb9Iku/O3smGWvZhauCf6cvvpKi4BKRiliS3cxnI+Gz9j5MEpTz2UFuXiKPJocb7gnsLHwiS05ige5BEA=="
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
     },
     "v8flags": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.0.tgz",
-      "integrity": "sha512-0m69VIK2dudEf2Ub0xwLQhZkDZu85OmiOpTw+UGDt56ibviYICHziM/3aE+oVg7IjGPp0c83w3eSVqa+lYZ9UQ==",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.2.tgz",
+      "integrity": "sha512-MtivA7GF24yMPte9Rp/BWGCYQNaUj86zeYxV/x2RRJMKagImbbv3u8iJC57lNhWLPcGLJmHcHmFWkNsplbbLWw==",
       "dev": true,
       "requires": {
         "homedir-polyfill": "^1.0.1"
@@ -8072,13 +9684,13 @@
       "integrity": "sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA="
     },
     "validate-npm-package-license": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.1.tgz",
-      "integrity": "sha1-KAS6vnEq0zeUWaz74kdGqywwP7w=",
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
+      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
       "dev": true,
       "requires": {
-        "spdx-correct": "~1.0.0",
-        "spdx-expression-parse": "~1.0.0"
+        "spdx-correct": "^3.0.0",
+        "spdx-expression-parse": "^3.0.0"
       }
     },
     "value-or-function": {
@@ -8087,6 +9699,12 @@
       "integrity": "sha1-HCQ6ULWVwb5Up1S/7OhWO5/42BM=",
       "dev": true
     },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
+      "dev": true
+    },
     "verror": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
@@ -8098,14 +9716,25 @@
       }
     },
     "vinyl": {
-      "version": "0.5.3",
-      "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.5.3.tgz",
-      "integrity": "sha1-sEVbOPxeDPMNQyUTLkYZcMIJHN4=",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.2.0.tgz",
+      "integrity": "sha512-MBH+yP0kC/GQ5GwBqrTPTzEfiiLjta7hTtvQtbxBgTeSXsmKQRQecjibMbxIXzVT3Y9KJK+drOz1/k+vsu8Nkg==",
       "dev": true,
       "requires": {
-        "clone": "^1.0.0",
-        "clone-stats": "^0.0.1",
-        "replace-ext": "0.0.1"
+        "clone": "^2.1.1",
+        "clone-buffer": "^1.0.0",
+        "clone-stats": "^1.0.0",
+        "cloneable-readable": "^1.0.0",
+        "remove-trailing-separator": "^1.0.1",
+        "replace-ext": "^1.0.0"
+      },
+      "dependencies": {
+        "clone": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
+          "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18=",
+          "dev": true
+        }
       }
     },
     "vinyl-fs": {
@@ -8133,18 +9762,6 @@
         "vinyl-sourcemap": "^1.1.0"
       },
       "dependencies": {
-        "clone": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.1.tgz",
-          "integrity": "sha1-0hfR6WERjjrJpLi7oyhVU79kfNs=",
-          "dev": true
-        },
-        "clone-stats": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
-          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
-          "dev": true
-        },
         "isarray": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
@@ -8166,12 +9783,6 @@
             "util-deprecate": "~1.0.1"
           }
         },
-        "replace-ext": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
-          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs=",
-          "dev": true
-        },
         "string_decoder": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -8182,29 +9793,15 @@
           }
         },
         "through2": {
-          "version": "2.0.3",
-          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
-          "integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=",
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
           "dev": true,
           "requires": {
-            "readable-stream": "^2.1.5",
+            "readable-stream": "~2.3.6",
             "xtend": "~4.0.1"
           }
         },
-        "vinyl": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.1.0.tgz",
-          "integrity": "sha1-Ah+cLPlR1rk5lDyJ617lrdT9kkw=",
-          "dev": true,
-          "requires": {
-            "clone": "^2.1.1",
-            "clone-buffer": "^1.0.0",
-            "clone-stats": "^1.0.0",
-            "cloneable-readable": "^1.0.0",
-            "remove-trailing-separator": "^1.0.1",
-            "replace-ext": "^1.0.0"
-          }
-        },
         "xtend": {
           "version": "4.0.1",
           "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -8228,36 +9825,13 @@
         "vinyl": "^2.0.0"
       },
       "dependencies": {
-        "clone": {
+        "normalize-path": {
           "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.1.tgz",
-          "integrity": "sha1-0hfR6WERjjrJpLi7oyhVU79kfNs=",
-          "dev": true
-        },
-        "clone-stats": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-1.0.0.tgz",
-          "integrity": "sha1-s3gt/4u1R04Yuba/D9/ngvh3doA=",
-          "dev": true
-        },
-        "replace-ext": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-1.0.0.tgz",
-          "integrity": "sha1-3mMSg3P8v3w8z6TeWkgMRaZ5WOs=",
-          "dev": true
-        },
-        "vinyl": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-2.1.0.tgz",
-          "integrity": "sha1-Ah+cLPlR1rk5lDyJ617lrdT9kkw=",
+          "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
+          "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
           "dev": true,
           "requires": {
-            "clone": "^2.1.1",
-            "clone-buffer": "^1.0.0",
-            "clone-stats": "^1.0.0",
-            "cloneable-readable": "^1.0.0",
-            "remove-trailing-separator": "^1.0.1",
-            "replace-ext": "^1.0.0"
+            "remove-trailing-separator": "^1.0.1"
           }
         }
       }
@@ -8269,9 +9843,9 @@
       "dev": true
     },
     "which": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
-      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "requires": {
         "isexe": "^2.0.0"
       }
@@ -8373,21 +9947,24 @@
         "signal-exit": "^3.0.2"
       }
     },
+    "ws": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-5.1.1.tgz",
+      "integrity": "sha512-bOusvpCb09TOBLbpMKszd45WKC2KPtxiyiHanv+H2DE3Az+1db5a/L7sVJZVDPUC1Br8f0SKRr1KjLpD1U/IAw==",
+      "dev": true,
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    },
     "xdg-basedir": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
       "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ=",
       "dev": true
     },
-    "xml-char-classes": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/xml-char-classes/-/xml-char-classes-1.0.0.tgz",
-      "integrity": "sha1-ZGV4SKIP/F31g6Qq2KJ3tFErvE0=",
-      "dev": true
-    },
     "xmlbuilder": {
       "version": "8.2.2",
-      "resolved": "http://registry.npmjs.org/xmlbuilder/-/xmlbuilder-8.2.2.tgz",
+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-8.2.2.tgz",
       "integrity": "sha1-aSSGc0ELS6QuGmE2VR0pIjNap3M=",
       "dev": true
     },
@@ -8407,9 +9984,9 @@
       }
     },
     "y18n": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
     "yallist": {
diff --git a/package.json b/package.json
index 9b47d4f..03c7daa 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "start": "gulp build && electron .",
     "pack": "gulp build && build --dir",
-    "dist": "gulp build && build -mwl --x64"
+    "dist": "gulp build && build -mwl --x64",
+    "test": "intern"
   },
   "repository": {
     "type": "git",
@@ -39,7 +40,9 @@
     "gulp": "^4.0.0",
     "gulp-htmlmin": "^4.0.0",
     "gulp-pug": "^3.3.0",
-    "jstransformer-markdown-it": "^2.0.0"
+    "intern": "^4.3.3",
+    "jstransformer-markdown-it": "^2.0.0",
+    "testdouble": "^3.9.1"
   },
   "build": {
     "publish": [
diff --git a/tests/instagram.js b/tests/instagram.js
new file mode 100644
index 0000000..e69de29
diff --git a/tests/main.js b/tests/main.js
new file mode 100644
index 0000000..e69de29
diff --git a/tests/utils.js b/tests/utils.js
new file mode 100644
index 0000000..63e8fe2
--- /dev/null
+++ b/tests/utils.js
@@ -0,0 +1,113 @@
+const { assert } = intern.getPlugin('chai');
+const { registerSuite } = intern.getPlugin('interface.object');
+const Client = require('instagram-private-api').V1;
+const td = require('testdouble');
+
+registerSuite('utils', () => {
+  let fs; let app; let utils; let Helpers;
+  const fakePath = 'C:\\SomeFakeFolder';
+  const electronMock = {
+    app: {
+      getPath: () => fakePath,
+    },
+  };
+
+  return {
+    beforeEach() {
+      app = td.replace('electron', electronMock).app;
+      fs = td.replace('fs');
+      utils = require('../main/utils');
+    },
+
+    afterEach() {
+      td.reset();
+    },
+
+    tests: {
+      canUseFileStorage: {
+        whenPathExistsReturnsTrue: () => {
+          td.when(fs.accessSync(`${app.getPath('userData')}/`, fs.W_OK)).thenReturn(true);
+
+          const canUseFileStorage = utils.canUseFileStorage();
+
+          assert.equal(canUseFileStorage, true);
+        },
+        whenPathRestrictedReturnsFalse: () => {
+          td.when(fs.accessSync(`${app.getPath('userData')}/`, fs.W_OK)).thenThrow(new Error('Something went awry'));
+
+          const canUseFileStorage = utils.canUseFileStorage();
+
+          assert.equal(canUseFileStorage, false);
+        },
+      },
+
+      guessUsername: {
+        whenFsAccessReturnsName: () => {
+          // we don't want to create the directory so assume it's there
+          td.when(fs.existsSync(`${fakePath}/session-cookie`)).thenReturn(true);
+          td.when(fs.readdirSync(`${fakePath}/session-cookie`)).thenReturn(['testUser.json']);
+
+          const userName = utils.guessUsername();
+
+          assert.equal(userName, 'testUser');
+        },
+        whenNoPrevUserNameReturnsEmpty: () => {
+          td.when(fs.existsSync(`${fakePath}/session-cookie`)).thenReturn(true);
+          td.when(fs.readdirSync(`${fakePath}/session-cookie`)).thenReturn([]);
+
+          const userName = utils.guessUsername();
+
+          assert.equal(userName, undefined);
+        },
+        whenNoFsAccessReturnsEmpty: () => {
+          td.when(fs.accessSync(`${app.getPath('userData')}/`, fs.W_OK)).thenThrow(new Error('Something went awry'));
+
+          const userName = utils.guessUsername();
+
+          assert.equal(userName, undefined);
+        },
+      },
+
+      getCookieStorage: {
+        whenFsAccessAndFileNameReturnsNewFileStorage: () => {
+          // TODO: I have no idea how to properly handle this as we'd have to mock touch. Maybe provide fake data?
+        },
+        whenNoFilePathAndNoUserNameReturnsEmpty: () => {
+          td.when(fs.existsSync(`${fakePath}/session-cookie`)).thenReturn(true);
+          td.when(fs.accessSync(`${fakePath}/session-cookie`)).thenReturn(true);
+          td.when(fs.readdirSync(`${fakePath}/session-cookie`)).thenReturn([]);
+
+          const storage = utils.guessUsername();
+          
+          // TODO: Is this expected behaviour? This should be handled just in case right?
+          assert.equal(storage, undefined);
+        },
+        whenNoFsAccessReturnsNewMemoryStorage: () => {
+          td.when(fs.accessSync(`${app.getPath('userData')}/`, fs.W_OK)).thenThrow(new Error('Something went awry'));
+
+          const storage = utils.getCookieStorage();
+
+          assert.equal(storage instanceof Client.CookieMemoryStorage, true);
+        },
+      },
+
+      getDevice: {
+        whenNoUserNameReturnsEmpty: () => {
+          td.when(fs.existsSync(`${fakePath}/session-cookie`)).thenReturn(true);
+          td.when(fs.readdirSync(`${fakePath}/session-cookie`)).thenReturn([]);
+
+          const device = utils.getDevice();
+          
+          assert.equal(device, undefined);
+        },
+        whenUserNameReturnsNewDevice: () => {
+          td.when(fs.existsSync(`${fakePath}/session-cookie`)).thenReturn(true);
+
+          const device = utils.getDevice('testDevice');
+          
+          assert.equal(device instanceof Client.Device, true);
+        },
+      },
+    },
+  };
+});