diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..c1c28af
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,17 @@
+version: 2
+jobs:
+  test:
+    macos:
+      xcode: "10.1.0"
+    shell: /bin/bash --login -eo pipefail
+    steps:
+      - checkout
+      - run:
+          name: Run tests
+          command: swift test -Xswiftc "-target" -Xswiftc "x86_64-apple-macosx10.13"
+
+workflows:
+  version: 2
+  build-test-lint:
+    jobs:
+      - test
diff --git a/README.md b/README.md
index 53c08b1..8e59644 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 Manage the Xcodes installed on your Mac
 
+[![CircleCI](https://circleci.com/gh/RobotsAndPencils/xcodes.svg?style=svg)](https://circleci.com/gh/RobotsAndPencils/xcodes)
+
 ## Installation
 
 ### Homebrew (Preferred)
diff --git a/Tests/XcodesKitTests/Environment+Mock.swift b/Tests/XcodesKitTests/Environment+Mock.swift
index ef46e53..6564ea4 100644
--- a/Tests/XcodesKitTests/Environment+Mock.swift
+++ b/Tests/XcodesKitTests/Environment+Mock.swift
@@ -36,6 +36,7 @@ extension Files {
             let url = URL(fileURLWithPath: "Stub.plist", relativeTo: URL(fileURLWithPath: #file).deletingLastPathComponent())
             return try? Data(contentsOf: url)
         },
-        removeItem: { _ in }
+        removeItem: { _ in },
+        createFile: { _, _, _ in return true }
     )
 }
\ No newline at end of file