5 files changed, 70 insertions, 51 deletions
diff --git a/tests/test_core.py b/tests/test_core.py
index 3eed24c..6d4a8d5 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -1,6 +1,6 @@
 import pytest
 
-from viewstate import ViewState
+from viewstate import *
 
 
 class TestViewState(object):
@@ -9,14 +9,13 @@ class TestViewState(object):
         vs = ViewState()
         assert not vs.is_valid()
 
-    @pytest.mark.skip(reason='Missing test data')
     def test_is_valid(self):
-        with open('samples/ngcs.sample', 'r') as f:
+        with open('tests/samples/ngcs.sample', 'r') as f:
             vs = ViewState(f.read())
-            self.assertTrue(vs.is_valid())
+            assert vs.is_valid() is True
 
     def test_invalid_decode(self):
-        with pytest.raises(Exception):
+        with pytest.raises(ViewStateException):
             vs = ViewState()
             vs.raw = b'\x01\x02'
             vs.decode()
diff --git a/viewstate/__init__.py b/viewstate/__init__.py
index b75cd37..c166e0c 100644
--- a/viewstate/__init__.py
+++ b/viewstate/__init__.py
@@ -1,47 +1,3 @@
-from base64 import b64decode, b64encode
+from .core import ViewState
+from .exceptions import ViewStateException
 
-
-CONSTS = {
-    100: {},
-    101: '',
-    102: 0,
-    103: True,
-    104: False
-}
-
-def parse_const(b):
-    return CONSTS.get(b, None)
-
-def parse(b):
-    assert type(b) == bytes().__class__
-    if len(b) == 1:
-        return parse_const(b[0])
-    return None
-
-
-class ViewState(object):
-
-    def __init__(self, base64=''):
-        self.base64 = base64
-        self.raw = b64decode(self.base64)
-        self.decoded = None
-
-    @property
-    def preamble(self):
-        return self.raw[:2]
-
-    @property
-    def body(self):
-        return self.raw[2:]
-
-    def is_valid(self):
-        format_marker = b'\xff'
-        version_marker = b'\x01'
-        preamble = format_marker + version_marker
-        return self.preamble == preamble
-
-    def decode(self):
-        if not self.is_valid():
-            raise Exception('Cannot decode invalid viewstate, bad preamble')
-        self.decoded = parse(self.body)
-        return self.decoded
diff --git a/viewstate/__main__.py b/viewstate/__main__.py
new file mode 100644
index 0000000..aa2e25d
--- /dev/null
+++ b/viewstate/__main__.py
@@ -0,0 +1,12 @@
+import sys
+
+from .core import ViewState
+
+def main():
+    s = sys.stdin.read()
+    vs = ViewState(s)
+    print('Got: ' + s)
+    print(vs.decode())
+
+if __name__ == '__main__':
+    main()
diff --git a/viewstate/core.py b/viewstate/core.py
new file mode 100644
index 0000000..347ee59
--- /dev/null
+++ b/viewstate/core.py
@@ -0,0 +1,48 @@
+from base64 import b64decode, b64encode
+
+from .exceptions import ViewStateException
+
+CONSTS = {
+    100: {},
+    101: '',
+    102: 0,
+    103: True,
+    104: False
+}
+
+def parse_const(b):
+    return CONSTS.get(b, None)
+
+def parse(b):
+    assert type(b) == bytes().__class__
+    if len(b) == 1:
+        return parse_const(b[0])
+    return None
+
+
+class ViewState(object):
+
+    def __init__(self, base64=''):
+        self.base64 = base64
+        self.raw = b64decode(self.base64)
+        self.decoded = None
+
+    @property
+    def preamble(self):
+        return self.raw[:2]
+
+    @property
+    def body(self):
+        return self.raw[2:]
+
+    def is_valid(self):
+        format_marker = b'\xff'
+        version_marker = b'\x01'
+        preamble = format_marker + version_marker
+        return self.preamble == preamble
+
+    def decode(self):
+        if not self.is_valid():
+            raise ViewStateException('Cannot decode invalid viewstate, bad preamble')
+        self.decoded = parse(self.body)
+        return self.decoded
diff --git a/viewstate/exceptions.py b/viewstate/exceptions.py
new file mode 100644
index 0000000..d9f6eda
--- /dev/null
+++ b/viewstate/exceptions.py
@@ -0,0 +1,4 @@
+
+
+class ViewStateException(Exception):
+    pass