Add tests

jsignature/tests/forms.py

@@ -0,0 +1,26 @@
+import json
+import django
+from django.test import SimpleTestCase
+from django.core.exceptions import ValidationError
+
+from ..widgets import JSignatureWidget
+from ..forms import JSignatureField
+
+
+class JSignatureFormFieldTest(SimpleTestCase):
+
+    def test_widget(self):
+        f = JSignatureField()
+        self.assertIsInstance(f.widget, JSignatureWidget)
+
+    def test_to_python(self):
+        f = JSignatureField()
+        # Empty values
+        for val in ['', [], '[]']:
+            self.assertIsNone(f.to_python(val))
+        # Correct values
+        val = '[{"x":[1,2], "y":[3,4]}]'
+        self.assertEquals([{'x':[1,2], 'y':[3,4]}], f.to_python(val))
+        # Incorrect values
+        val = 'foo'
+        self.assertRaises(ValidationError, f.to_python, val)