Add unit tests

docs/includes/pairlists.md

@@ -2,7 +2,7 @@
 
 Pairlist Handlers define the list of pairs (pairlist) that the bot should trade. They are configured in the `pairlists` section of the configuration settings.
 
-In your configuration, you can use Static Pairlist (defined by the [`StaticPairList`](#static-pair-list) Pairlist Handler), Dynamic Pairlist (defined by the [`VolumePairList`](#volume-pair-list) Pairlist Handler).
+In your configuration, you can use Static Pairlist (defined by the [`StaticPairList`](#static-pair-list) Pairlist Handler) and Dynamic Pairlist (defined by the [`VolumePairList`](#volume-pair-list) Pairlist Handler).
 
 Additionally, [`AgeFilter`](#agefilter), [`PrecisionFilter`](#precisionfilter), [`PriceFilter`](#pricefilter), [`ShuffleFilter`](#shufflefilter), [`SpreadFilter`](#spreadfilter) and [`VolatilityFilter`](#volatilityfilter) act as Pairlist Filters, removing certain pairs and/or moving their positions in the pairlist.
 

freqtrade/plugins/pairlist/RemotePairList.py

@@ -74,18 +74,19 @@ class RemotePairList(IPairList):
         info = "Pairlist"
 
         try:
-            with requests.get(self._pairlist_url, headers=headers,
+            response = requests.get(self._pairlist_url, headers=headers,
-                              timeout=self._read_timeout) as response:
+                                    timeout=self._read_timeout)
             content_type = response.headers.get('content-type')
             time_elapsed = response.elapsed.total_seconds()
 
+            print(response)
+
             if "application/json" in str(content_type):
                 jsonparse = response.json()
                 pairlist = jsonparse['pairs']
-                    info = jsonparse.get('info', '')[:1000]
+                info = jsonparse.get('info', '')
             else:
-                    raise OperationalException(
+                raise OperationalException('RemotePairList is not of type JSON abort ')
-                        'Remotepairlist is not of type JSON abort')
 
             self._refresh_period = jsonparse.get('refresh_period', self._refresh_period)
             self._pair_cache = TTLCache(maxsize=1, ttl=self._refresh_period)
@@ -127,7 +128,7 @@ class RemotePairList(IPairList):
                         # Load the JSON data into a dictionary
                         jsonparse = json.load(json_file)
                         pairlist = jsonparse['pairs']
-                        info = jsonparse.get('info', '')[:1000]
+                        info = jsonparse.get('info', '')
                         self._refresh_period = jsonparse.get('refresh_period', self._refresh_period)
                         self._pair_cache = TTLCache(maxsize=1, ttl=self._refresh_period)
 

tests/plugins/test_remotepairlist.py

@@ -0,0 +1,123 @@
+from unittest.mock import MagicMock
+
+import pytest
+
+from freqtrade.exceptions import OperationalException
+from freqtrade.plugins.pairlist.RemotePairList import RemotePairList
+from freqtrade.plugins.pairlistmanager import PairListManager
+from tests.conftest import get_patched_exchange, get_patched_freqtradebot
+
+
+@pytest.fixture(scope="function")
+def rpl_config(default_conf):
+    default_conf['stake_currency'] = 'USDT'
+
+    default_conf['exchange']['pair_whitelist'] = [
+        'ETH/USDT',
+        'BTC/USDT',
+    ]
+    default_conf['exchange']['pair_blacklist'] = [
+        'BLK/USDT'
+    ]
+    return default_conf
+
+
+def test_fetch_pairlist_mock_response_html(mocker, rpl_config):
+    mock_response = MagicMock()
+    mock_response.headers = {'content-type': 'text/html'}
+    mocker.patch('requests.get', return_value=mock_response)
+
+    rpl_config['pairlists'] = [
+        {
+            "method": "RemotePairList",
+            "pairlist_url": "http://example.com/pairlist",
+            "number_assets": 10,
+            "read_timeout": 10,
+            "keep_pairlist_on_failure": True,
+        }
+    ]
+
+    exchange = get_patched_exchange(mocker, rpl_config)
+    pairlistmanager = PairListManager(exchange, rpl_config)
+
+    mocker.patch("freqtrade.plugins.pairlist.RemotePairList.requests.get",
+                 return_value=mock_response)
+    remote_pairlist = RemotePairList(exchange, pairlistmanager, rpl_config,
+                                     rpl_config['pairlists'][0], 0)
+
+    with pytest.raises(OperationalException, match='RemotePairList is not of type JSON abort'):
+        remote_pairlist.fetch_pairlist()
+
+
+def test_remote_pairlist_init_no_pairlist_url(mocker, rpl_config):
+
+    rpl_config['pairlists'] = [
+        {
+            "method": "RemotePairList",
+            "number_assets": 10,
+            "keep_pairlist_on_failure": True,
+        }
+    ]
+
+    get_patched_exchange(mocker, rpl_config)
+    with pytest.raises(OperationalException, match=r'`pairlist_url` not specified.'
+                       r' Please check your configuration for "pairlist.config.pairlist_url"'):
+        get_patched_freqtradebot(mocker, rpl_config)
+
+
+def test_remote_pairlist_init_no_number_assets(mocker, rpl_config):
+
+    rpl_config['pairlists'] = [
+        {
+            "method": "RemotePairList",
+            "pairlist_url": "http://example.com/pairlist",
+            "keep_pairlist_on_failure": True,
+        }
+    ]
+
+    get_patched_exchange(mocker, rpl_config)
+
+    with pytest.raises(OperationalException, match=r'`number_assets` not specified. '
+                       'Please check your configuration for "pairlist.config.number_assets"'):
+        get_patched_freqtradebot(mocker, rpl_config)
+
+
+def test_fetch_pairlist_mock_response_valid(mocker, rpl_config):
+
+    rpl_config['pairlists'] = [
+        {
+            "method": "RemotePairList",
+            "pairlist_url": "http://example.com/pairlist",
+            "number_assets": 10,
+            "refresh_period": 10,
+            "read_timeout": 10,
+            "keep_pairlist_on_failure": True,
+        }
+    ]
+
+    mock_response = MagicMock()
+
+    mock_response.json.return_value = {
+        "pairs": ["ETH/BTC", "XRP/BTC", "LTC/BTC", "EOS/BTC"],
+        "info": "Mock pairlist response",
+        "refresh_period": 60
+    }
+
+    mock_response.headers = {
+        "content-type": "application/json"
+    }
+
+    mock_response.elapsed.total_seconds.return_value = 0.4
+    mocker.patch("freqtrade.plugins.pairlist.RemotePairList.requests.get",
+                 return_value=mock_response)
+
+    exchange = get_patched_exchange(mocker, rpl_config)
+    pairlistmanager = PairListManager(exchange, rpl_config)
+    remote_pairlist = RemotePairList(exchange, pairlistmanager, rpl_config,
+                                     rpl_config['pairlists'][0], 0)
+    pairs, time_elapsed, info = remote_pairlist.fetch_pairlist()
+
+    assert pairs == ["ETH/BTC", "XRP/BTC", "LTC/BTC", "EOS/BTC"]
+    assert time_elapsed == 0.4
+    assert info == "Mock pairlist response"
+    assert remote_pairlist._refresh_period == 60