1 files changed, 104 insertions, 0 deletions
diff --git a/tests/test_size_to_str.py b/tests/test_size_to_str.py
new file mode 100644
index 0000000..6320e39
--- /dev/null
+++ b/tests/test_size_to_str.py
@@ -0,0 +1,104 @@
+#!/usr/bin/python3
+
+__author__ = "Barry Warsaw <barry@ubuntu.com>, James Hunt, Michael Vogt"
+
+import unittest
+
+import apt_pkg
+import testcommon
+
+
+class SizeToStrTestCase(testcommon.TestCase):
+    """Test apt_pkg.size_to_str"""
+
+    DATA = {
+        # XXX: note the trailing spaces for some of these entries!
+        10**1: "10 ",
+        10**2: "100 ",
+        10**3: "1000 ",
+        10**4: "10.0 k",
+        10**5: "100 k",
+        10**6: "1000 k",
+        10**7: "10.0 M",
+        10**8: "100 M",
+        10**9: "1000 M",
+        10**10: "10.0 G",
+        10**11: "100 G",
+        10**12: "1000 G",
+        10**13: "10.0 T",
+        10**14: "100 T",
+        10**15: "1000 T",
+        10**16: "10.0 P",
+        10**17: "100 P",
+        10**18: "1000 P",
+        10**19: "10.0 E",
+        10**20: "100 E",
+        10**21: "1000 E",
+        10**22: "10.0 Z",
+        10**23: "100.0 Z",
+        10**24: "1000 Z",
+        # 10 ** 25: "10.0 Y",
+        10**26: "100 Y",
+        10**27: "1000 Y",
+        # That's our limit :)
+        10**28: "10000 Y",
+        0: "0 ",
+        1: "1 ",
+        1024: "1024 ",
+        10240: "10.2 k",
+        102400: "102 k",
+        1024000: "1024 k",
+        10240000: "10.2 M",
+        102400000: "102 M",
+        2147483647: "2147 M",
+        2147483648: "2147 M",
+        1024000000: "1024 M",
+        10240000000: "10.2 G",
+        9: "9 ",
+        99: "99 ",
+        999: "999 ",
+        9999: "9999 ",
+        99999: "100.0 k",
+        999999: "1000 k",
+        9999999: "10000 k",
+        99999999: "100.0 M",
+        999999999: "1000 M",
+        9999999999: "10000 M",
+        99999999999: "100.0 G",
+        999999999999: "1000 G",
+        9999999999999: "10000 G",
+        99999999999999: "100.0 T",
+        999999999999999: "1000 T",
+        9999999999999999: "10.0 P",
+        99999999999999999: "100 P",
+        999999999999999999: "1000 P",
+        9999999999999999999: "10.0 E",
+        99999999999999999999: "100 E",
+        999999999999999999999: "1000 E",
+        9999999999999999999999: "10.0 Z",
+        999999999999999999999999: "1000 Z",
+    }
+
+    def test_from_data(self):
+        for k, v in self.DATA.items():
+            size = apt_pkg.size_to_str(k)
+            msg = f"size_to_str({k}) returned '{size}', expected '{v}'"
+            self.assertEqual(size, v, msg)
+
+    def test_raise_on_unsupported(self):
+        for v in ["hello", None, {}, [], ()]:
+            with self.assertRaises(TypeError):
+                apt_pkg.size_to_str(v)
+
+
+class RegressionTestCase(testcommon.TestCase):
+    """Regression test for LP: #1030278"""
+
+    def test_no_overflow_error(self):
+        # LP: #1030278 produces an overflow error in size_to_str() with a big
+        # value under Python 3.
+        self.assertEqual(apt_pkg.size_to_str(2147483648000000000000), "2147 E")
+
+
+if __name__ == "__main__":
+    unittest.main()