Make progress bar cursor draggable

tests/fake_spotify.py

@@ -1,10 +1,11 @@
-"""Stand-in Spotify Web API: just enough of /api/token, .../player/devices
-and .../player to test spotify.py against, the same way fakes.py stands in
+"""Stand-in Spotify Web API: just enough of /api/token, .../player/devices,
+.../player and .../player/seek to test spotify.py against, the same way fakes.py stands in
 for real HEOS hardware."""
 
 import json
 import threading
 from http.server import BaseHTTPRequestHandler, HTTPServer
+from urllib.parse import parse_qs, urlparse
 
 
 class FakeSpotify(threading.Thread):
@@ -21,6 +22,7 @@ class FakeSpotify(threading.Thread):
         self.valid_token = None
         self.tokens_issued = 0
         self.transfers = []            # every PUT /v1/me/player body
+        self.seeks = []                # every PUT /v1/me/player/seek's position_ms
         self.reject_refresh = False    # simulate a revoked refresh token
         self.player = None             # GET /v1/me/player's body; None is no session (204)
 
@@ -63,6 +65,21 @@ class FakeSpotify(threading.Thread):
                     self.send_response(204)
                     self.end_headers()
                     return
+                if self.path.startswith("/v1/me/player/seek?"):
+                    if not self._authorized():
+                        self._send(401, {"error": {"message": "The access token expired"}})
+                        return
+                    query = parse_qs(urlparse(self.path).query)
+                    fake.seeks.append(int(query["position_ms"][0]))
+                    # The real one answers some player commands with a
+                    # non-JSON body rather than an empty 204.
+                    body = b"a1b2c3d4"
+                    self.send_response(200)
+                    self.send_header("Content-Type", "text/plain")
+                    self.send_header("Content-Length", str(len(body)))
+                    self.end_headers()
+                    self.wfile.write(body)
+                    return
                 self._send(404, {"error": {"message": "not found"}})
 
             def do_GET(self):