diff --git a/requirements.txt b/requirements.txt
index 636925a..8e800f0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ enzyme>=0.4.1
 click>=6.7
 langdetect>=1.0.7
 titlecase>=0.12.0
+pytest>=5.3.5
diff --git a/test/__init__.py b/test/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/test/test_import.py b/test/test_import.py
new file mode 100644
index 0000000..dedea7c
--- /dev/null
+++ b/test/test_import.py
@@ -0,0 +1,6 @@
+import sys, os
+sys.path.append(os.path.realpath(os.path.dirname(__file__)+"/../src"))
+
+def test_import_env_variables():
+  import env_variables as env 
+  assert env.logfile == 'conf/output.log'
diff --git a/test/test_square.py b/test/test_square.py
new file mode 100644
index 0000000..419c80b
--- /dev/null
+++ b/test/test_square.py
@@ -0,0 +1,9 @@
+
+def square(x):
+  return x * x
+
+def test_square():
+  assert square(2) == 4
+
+def test_square_negative():
+  assert square(-2) == 4