1 files changed, 38 insertions, 0 deletions
diff --git a/cli/tests/test_range_request.py b/cli/tests/test_range_request.py
new file mode 100644
index 00000000..83bc9c9f
--- /dev/null
+++ b/cli/tests/test_range_request.py
@@ -0,0 +1,38 @@
+import pytest
+from werkzeug.exceptions import RequestedRangeNotSatisfiable
+
+from onionshare_cli.web.share_mode import parse_range_header
+
+
+VALID_RANGES = [
+    (None, 500, [(0, 499)]),
+    ("bytes=0", 500, [(0, 499)]),
+    ("bytes=100", 500, [(100, 499)]),
+    ("bytes=100-", 500, [(100, 499)]),  # not in the RFC, but how curl sends
+    ("bytes=0-99", 500, [(0, 99)]),
+    ("bytes=0-599", 500, [(0, 499)]),
+    ("bytes=0-0", 500, [(0, 0)]),
+    ("bytes=-100", 500, [(400, 499)]),
+    ("bytes=0-99,100-199", 500, [(0, 199)]),
+    ("bytes=0-100,100-199", 500, [(0, 199)]),
+    ("bytes=0-99,101-199", 500, [(0, 99), (101, 199)]),
+    ("bytes=0-199,100-299", 500, [(0, 299)]),
+    ("bytes=0-99,200-299", 500, [(0, 99), (200, 299)]),
+]
+
+
+INVALID_RANGES = [
+    "bytes=200-100",
+    "bytes=0-100,300-200",
+]
+
+
+def test_parse_ranges():
+    for case in VALID_RANGES:
+        (header, target_size, expected) = case
+        parsed = parse_range_header(header, target_size)
+        assert parsed == expected, case
+
+    for invalid in INVALID_RANGES:
+        with pytest.raises(RequestedRangeNotSatisfiable):
+            parse_range_header(invalid, 500)