add

ccxt/pro/test/Exchange/test_watch_tickers.py

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+import os
+import sys
+
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))))
+sys.path.append(root)
+
+# ----------------------------------------------------------------------------
+
+# PLEASE DO NOT EDIT THIS FILE, IT IS GENERATED AND WILL BE OVERWRITTEN:
+# https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-contribute-code
+
+# ----------------------------------------------------------------------------
+# -*- coding: utf-8 -*-
+
+import asyncio
+from ccxt.base.errors import ArgumentsRequired  # noqa E402
+from ccxt.test.exchange.base import test_ticker  # noqa E402
+from ccxt.test.exchange.base import test_shared_methods  # noqa E402
+
+async def test_watch_tickers(exchange, skipped_properties, symbol):
+    without_symbol = test_watch_tickers_helper(exchange, skipped_properties, None)
+    with_symbol = test_watch_tickers_helper(exchange, skipped_properties, [symbol])
+    await asyncio.gather(*[with_symbol, without_symbol])
+
+
+async def test_watch_tickers_helper(exchange, skipped_properties, arg_symbols, arg_params={}):
+    method = 'watchTickers'
+    now = exchange.milliseconds()
+    ends = now + 15000
+    while now < ends:
+        response = None
+        success = True
+        should_return = False
+        try:
+            response = await exchange.watch_tickers(arg_symbols, arg_params)
+        except Exception as e:
+            # for some exchanges, specifically watchTickers method not subscribe
+            # to "all tickers" itself, and it requires symbols to be set
+            # so, in such case, if it's arguments-required exception, we don't
+            # mark tests as failed, but just skip them
+            if (isinstance(e, ArgumentsRequired)) and (arg_symbols is None or len(arg_symbols) == 0):
+                # todo: provide random symbols to try
+                # return;
+                # return false;
+                should_return = True
+            elif not test_shared_methods.is_temporary_failure(e):
+                raise e
+            now = exchange.milliseconds()
+            # continue;
+            success = False
+        if should_return:
+            return False
+        if success:
+            assert isinstance(response, dict), exchange.id + ' ' + method + ' ' + exchange.json(arg_symbols) + ' must return an object. ' + exchange.json(response)
+            values = list(response.values())
+            checked_symbol = None
+            if arg_symbols is not None and len(arg_symbols) == 1:
+                checked_symbol = arg_symbols[0]
+            test_shared_methods.assert_non_emtpy_array(exchange, skipped_properties, method, values, checked_symbol)
+            for i in range(0, len(values)):
+                ticker = values[i]
+                test_ticker(exchange, skipped_properties, method, ticker, checked_symbol)
+            now = exchange.milliseconds()
+    return True