euicc: Implement EID checksum verification + computation

Change-Id: I2cb342783137ee7e4b1be3b14e9c3747316f1995

tests/test_euicc.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from pySim.euicc import *
+
+class TestEid(unittest.TestCase):
+
+    def test_eid_verify(self):
+        for eid in ['89049032123451234512345678901235', '89086030202200000022000023022943',
+                    '89044045116727494800000004479366', 89044045116727494800000004479366]:
+            self.assertTrue(verify_eid_checksum(eid))
+
+    def test_eid_verify_wrong(self):
+        self.assertFalse(verify_eid_checksum('89049032123451234512345678901234'))
+        self.assertFalse(verify_eid_checksum(89049032123451234512345678901234))
+
+    def test_eid_encode_with_32_digits(self):
+        self.assertEquals(compute_eid_checksum('89049032123451234512345678901200'), '89049032123451234512345678901235')
+        self.assertEquals(compute_eid_checksum('89086030202200000022000023022900'), '89086030202200000022000023022943')
+
+    def test_eid_encode_with_30digits(self):
+        self.assertEquals(compute_eid_checksum('890490321234512345123456789012'), '89049032123451234512345678901235')
+
+    def test_eid_encode_with_wrong_csum(self):
+        # input: EID with wrong checksum
+        self.assertEquals(compute_eid_checksum('89049032123451234512345678901299'), '89049032123451234512345678901235')
+        self.assertEquals(compute_eid_checksum(89049032123451234512345678901299), '89049032123451234512345678901235')
+
+if __name__ == "__main__":
+	unittest.main()