fix(remote): keep vault keys when a relayed licence is refused

proxy_license now raises ClickException instead of RemoteError (a SystemExit), so dl falls back to the track's vault key; licence messages name the track ("video 360p DV (592464997)").

tests/remote/unit/test_progress_sink.py

@@ -12,6 +12,7 @@ import pytest
 from unshackle.core.api.progress import (
     DOWNLOAD_PROGRESS_CEILING,
     build_job_progress_callables,
+    track_log_label,
     track_progress_label,
     track_progress_weight,
 )
@@ -48,6 +49,13 @@ def noop(**kwargs):
     pass
 
 
+def test_track_log_label_adds_the_track_id():
+    video = Video(2160, "DV")
+    video.id = "592464997"
+
+    assert track_log_label(video) == "video 2160p DV (592464997)"
+
+
 def test_track_progress_label():
     assert track_progress_label(Video(2160, "DV")) == "video 2160p DV"
     assert track_progress_label(Video(1080, "HDR10+")) == "video 1080p HDR10+"

tests/remote/unit/test_remote_service_server_cdm_license.py

@@ -96,3 +96,22 @@ def test_proxy_mode_keeps_the_callers_type():
     assert licence == b"lic"
     assert svc.client.posts[0]["drm_type"] == "playready"
     assert svc.client.posts[0]["pssh"] == "PR"
+
+
+def test_a_refused_relayed_licence_raises_a_click_exception_with_the_server_message():
+    import click
+
+    from unshackle.core.remote_service import RemoteError
+
+    svc = _service("widevine", {})
+    svc._server_cdm = False
+    svc.drain_server_logs = lambda: None
+
+    def refuse(endpoint, payload, expect=()):
+        raise RemoteError("Licence request failed: refused", "SERVICE_ERROR")
+
+    svc.client.post = refuse
+    track = SimpleNamespace(id="vid", drm=[_PlayReady()])
+
+    with pytest.raises(click.ClickException, match="^Licence request failed: refused$"):
+        svc.proxy_license(b"chal", track, "playready")

tests/remote/unit/test_server_cdm_key_verification.py

@@ -182,7 +182,7 @@ def test_resolve_server_keys_does_not_warn_for_clear_tracks(monkeypatch):
 
     svc.resolve_server_keys(SimpleNamespace(tracks=Tracks([video_track, audio_track])))
 
-    assert warnings == ["Server CDM returned no content keys for track v-1"]
+    assert warnings == ["Server CDM returned no content keys for track simplenamespace (v-1)"]
 
 
 def resolve(manifest_drm, drm_type="widevine"):