Added tests.

Author: whitie

barcode/__init__.py

@@ -20,7 +20,7 @@
 __description__ = ('Create standard barcodes with Python. No external '
                    'modules needed (optional PIL support included).')
 __version__ = '0.8'
-__release__ = '{version}beta1'.format(version=__version__)
+__release__ = '{version}'.format(version=__version__)
 __license__ = 'MIT'
 __url__ = 'https://bitbucket.org/whitie/python-barcode/'
 __classifiers__ = [
@@ -88,9 +88,11 @@ def get_class(name):
 
 
 def generate(name, code, writer=None, output=None, writer_options=None,
-             text=None):
+             text=None, pil=False):
     options = writer_options or {}
-    barcode = get_barcode(name, code, writer)
+    barcode = get(name, code, writer)
+    if pil:
+        return barcode.render(writer_options, text)
     if isinstance(output, _strbase):
         fullname = barcode.save(output, options, text)
         return fullname

barcode/codex.py

@@ -79,7 +79,7 @@ def render(self, writer_options, text=None):
         return Barcode.render(self, options, text)
 
 
-class PZN(Code39):
+class PZN7(Code39):
     """Initializes new German number for pharmaceutical products.
 
     :parameters:
@@ -117,6 +117,12 @@ def calculate_checksum(self):
             return checksum
 
 
+class PZN8(PZN7):
+    """Will be fully added in v0.9."""
+
+    digits = 7
+
+
 class Code128(Barcode):
     """Initializes a new Code128 instance. The checksum is added automatically
     when building the bars.
@@ -250,3 +256,7 @@ def render(self, writer_options, text=None):
         options = dict(module_width=MIN_SIZE, quiet_zone=MIN_QUIET_ZONE)
         options.update(writer_options or {})
         return Barcode.render(self, options, text)
+
+
+# For pre 0.8 compatibility
+PZN = PZN7

barcode/ean.py

@@ -75,8 +75,8 @@ def calculate_checksum(self):
         :rtype: Integer
         """
         def sum_(x, y): return int(x) + int(y)
-        evensum = reduce(sum_, self.ean[::2])
-        oddsum = reduce(sum_, self.ean[1::2])
+        evensum = reduce(sum_, self.ean[-2::-2])
+        oddsum = reduce(sum_, self.ean[-1::-2])
         return (10 - ((evensum + oddsum * 3) % 10)) % 10
 
     def build(self):

barcode/isxn.py

@@ -48,6 +48,9 @@ def __init__(self, isbn, writer=None):
         self.isbn13 = isbn
         if isbn[:3] not in ('978', '979'):
             raise WrongCountryCodeError('ISBN must start with 978 or 979.')
+        if isbn[:3] == '979':
+            if isbn[3:5] not in ('10', '11'):
+                raise BarcodeError('ISBN must start with 97910 or 97911.')
         EuropeanArticleNumber13.__init__(self, isbn, writer)
 
 

test.py

@@ -115,8 +115,45 @@ def test_ean8(self):
         self.assertEqual(ref, bc[0])
 
 
+class TestChecksums(unittest.TestCase):
+
+    def test_code39(self):
+        code39 = get_barcode('code39', 'Code39')
+        self.assertEqual('CODE39W', code39.get_fullcode())
+
+    def test_pzn(self):
+        pzn = get_barcode('pzn', '103940')
+        self.assertEqual('PZN-1039406', pzn.get_fullcode())
+
+    def test_ean13(self):
+        ean = get_barcode('ean13', '400614457735')
+        self.assertEqual('4006144577350', ean.get_fullcode())
+
+    def test_ean8(self):
+        ean = get_barcode('ean8', '6032299')
+        self.assertEqual('60322999', ean.get_fullcode())
+
+    def test_jan(self):
+        jan = get_barcode('jan', '491400614457')
+        self.assertEqual('4914006144575', jan.get_fullcode())
+
+    def test_ean14(self):
+        ean = get_barcode('ean14', '1234567891258')
+        self.assertEqual('12345678912589', ean.get_fullcode())
+
+    def test_isbn10(self):
+        isbn = get_barcode('isbn10', '376926085')
+        self.assertEqual('3769260856', isbn.isbn10)
+
+    def test_isbn13(self):
+        isbn = get_barcode('isbn13', '978376926085')
+        self.assertEqual('9783769260854', isbn.get_fullcode())
+
+
 if __name__ == '__main__':
     test()
     print('\nNow open {htmlfile} in your browser.'.format(htmlfile=HTMLFILE))
+    if '-v' not in sys.argv:
+        sys.argv.append('-v')
     unittest.main()