1 files changed, 49 insertions, 0 deletions
diff --git a/testing/setup.js b/testing/setup.js
new file mode 100644
index 0000000..b91a299
--- /dev/null
+++ b/testing/setup.js
@@ -0,0 +1,49 @@
+var is = require('is');
+var path = require('path');
+var fs = require('fs');
+var expect = require('expect');
+
+expect.extend({
+    /**
+        Check that a file is created in a directory:
+
+        expect('myFolder').toHaveFile('hello.md');
+    */
+    toHaveFile: function(fileName) {
+        var filePath = path.join(this.actual, fileName);
+        var exists = fs.existsSync(filePath);
+
+        expect.assert(
+            exists,
+            'expected %s to have file %s',
+            this.actual,
+            fileName
+        );
+        return this;
+    },
+    toNotHaveFile: function(fileName) {
+        var filePath = path.join(this.actual, fileName);
+        var exists = fs.existsSync(filePath);
+
+        expect.assert(
+            !exists,
+            'expected %s to not have file %s',
+            this.actual,
+            fileName
+        );
+        return this;
+    },
+
+    /**
+        Check that a value is defined (not null nor undefined)
+    */
+    toBeDefined: function() {
+        expect.assert(
+            !(is.undefined(this.actual) || is.null(this.actual)),
+            'expected to be defined'
+        );
+        return this;
+    }
+});
+
+global.expect = expect;