Add unit tests

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