diff --git a/devops_test.py b/devops_test.py
index 0ba4358..8adcb5f 100644
--- a/devops_test.py
+++ b/devops_test.py
@@ -4,8 +4,7 @@ import re
 
 def init_project():
     # validate_values()
-    version = Version('build.gradle')
-    version.parse()
+    version = Version.from_file('build.gradle')
     version.increment(ReleaseLevel.SNAPSHOT)
     version.write()
 
@@ -23,11 +22,17 @@ class ReleaseLevel(Enum):
 
 class Version():
 
-    def __init__(self, config_file_path):
-        self.version = []
-        self.is_snapshot = False
-        self.config_file_path = config_file_path
-        self.config_file_type = config_file_path.split('.')[-1]
+    def __init__(self, version, is_snapshot):
+        self.version = version
+        self.is_snapshot = is_snapshot
+
+    @classmethod
+    def from_file(cls, config_file_path):
+        ret_cls = cls(None, False)
+        ret_cls.config_file_path = config_file_path
+        ret_cls.config_file_type = config_file_path.split('.')[-1]
+        ret_cls.parse()
+        return ret_cls
 
     def parse(self):
         match self.config_file_type:
@@ -35,6 +40,8 @@ class Version():
                 self.__parse_json()
             case 'gradle':
                 self.__parse_gradle()
+            case _:
+                raise Exception(f'The file type "{self.config_file_type}" is not implemented')
 
     def __parse_json(self):
         with open(self.config_file_path, 'r') as json_file:
@@ -51,7 +58,7 @@ class Version():
             if version_line is None:
                 raise Exception("Version not found in gradle file")
             version_line = version_line.group()
-            version_string = re.search('[0-9]*\.[0-9]*\.[0-9]*(-SNAPSHOT)?', version_line)
+            version_string = re.search('[0-9]*\\.[0-9]*\\.[0-9]*(-SNAPSHOT)?', version_line)
             if version_string is None:
                 raise Exception("Version not found in gradle file")
             
diff --git a/test/test_version.py b/test/test_version.py
new file mode 100644
index 0000000..d72416b
--- /dev/null
+++ b/test/test_version.py
@@ -0,0 +1,25 @@
+from devops_test import Version, ReleaseLevel
+
+def test_version():
+    version = Version([1, 2, 3], False)
+
+    version.increment(ReleaseLevel.SNAPSHOT)
+    assert version.get() == "1.2.3-SNAPSHOT"
+    assert version.version == [1, 2, 3]
+    assert version.is_snapshot
+
+    version.increment(ReleaseLevel.PATCH)
+    assert version.get() == "1.2.4"
+    assert version.version == [1, 2, 4]
+    assert not version.is_snapshot
+
+    version.increment(ReleaseLevel.SNAPSHOT)
+    assert version.get() == "1.2.4-SNAPSHOT"
+    version.increment(ReleaseLevel.SNAPSHOT)
+    assert version.get() == "1.2.4-SNAPSHOT"
+
+    version.increment(ReleaseLevel.MINOR)
+    assert version.get() == "1.3.0"
+
+    version.increment(ReleaseLevel.MAJOR)
+    assert version.get() == "2.0.0"
\ No newline at end of file