Allow user to update testdata files with parameter --refresh-pairs-cached (#174)

freqtrade/tests/test_misc.py

@@ -95,7 +95,12 @@ def test_parse_args_backtesting_invalid():
 
 def test_parse_args_backtesting_custom(mocker):
     backtesting_mock = mocker.patch('freqtrade.optimize.backtesting.start', MagicMock())
-    args = parse_args(['-c', 'test_conf.json', 'backtesting', '--live', '--ticker-interval', '1'])
+    args = parse_args([
+        '-c', 'test_conf.json',
+        'backtesting',
+        '--live',
+        '--ticker-interval', '1',
+        '--refresh-pairs-cached'])
     assert args is None
     assert backtesting_mock.call_count == 1
 
@@ -106,6 +111,7 @@ def test_parse_args_backtesting_custom(mocker):
     assert call_args.subparser == 'backtesting'
     assert call_args.func is not None
     assert call_args.ticker_interval == 1
+    assert call_args.refresh_pairs is True
 
 
 def test_parse_args_hyperopt(mocker):

freqtrade/tests/test_optimize_backtesting.py

@@ -4,6 +4,8 @@
 from freqtrade import exchange, optimize
 from freqtrade.exchange import Bittrex
 from freqtrade.optimize.backtesting import backtest
+from freqtrade.optimize.__init__ import testdata_path, download_pairs, download_backtesting_testdata
+import os
 
 import pytest
 
@@ -13,8 +15,8 @@ def test_backtest(default_conf, mocker):
 
     data = optimize.load_data(ticker_interval=5, pairs=['BTC_ETH'])
     results = backtest(default_conf, optimize.preprocess(data), 10, True)
-    num_resutls = len(results)
-    assert num_resutls > 0
+    num_results = len(results)
+    assert num_results > 0
 
 
 def test_1min_ticker_interval(default_conf, mocker):
@@ -26,7 +28,69 @@ def test_1min_ticker_interval(default_conf, mocker):
     results = backtest(default_conf, optimize.preprocess(data), 1, True)
     assert len(results) > 0
 
-    # Run a backtesting for 5min ticker_interval
-    with pytest.raises(FileNotFoundError):
-        data = optimize.load_data(ticker_interval=5, pairs=['BTC_UNITEST'])
-        results = backtest(default_conf, optimize.preprocess(data), 1, True)
+def test_backtest_with_new_pair(default_conf, mocker):
+    mocker.patch.dict('freqtrade.main._CONF', default_conf)
+    exchange._API = Bittrex({'key': '', 'secret': ''})
+
+    optimize.load_data(ticker_interval=1, pairs=['BTC_MEME'])
+    file = 'freqtrade/tests/testdata/BTC_MEME-1.json'
+    assert os.path.isfile(file) is True
+
+    # delete file freshly downloaded
+    if os.path.isfile(file):
+        os.remove(file)
+
+
+def test_testdata_path():
+    assert str('freqtrade/optimize/../tests/testdata') in testdata_path()
+
+
+def test_download_pairs(default_conf, mocker):
+    mocker.patch.dict('freqtrade.main._CONF', default_conf)
+    exchange._API = Bittrex({'key': '', 'secret': ''})
+
+    file1_1 = 'freqtrade/tests/testdata/BTC_MEME-1.json'
+    file1_5 = 'freqtrade/tests/testdata/BTC_MEME-5.json'
+    file2_1 = 'freqtrade/tests/testdata/BTC_CFI-1.json'
+    file2_5 = 'freqtrade/tests/testdata/BTC_CFI-5.json'
+
+    assert download_pairs(pairs = ['BTC-MEME', 'BTC-CFI']) is True
+
+    assert os.path.isfile(file1_1) is True
+    assert os.path.isfile(file1_5) is True
+    assert os.path.isfile(file2_1) is True
+    assert os.path.isfile(file2_5) is True
+
+    # delete files freshly downloaded
+    if os.path.isfile(file1_1):
+        os.remove(file1_1)
+
+    if os.path.isfile(file1_5):
+        os.remove(file1_5)
+
+    if os.path.isfile(file2_1):
+        os.remove(file2_1)
+
+    if os.path.isfile(file2_5):
+        os.remove(file2_5)
+
+
+def test_download_backtesting_testdata(default_conf, mocker):
+    mocker.patch.dict('freqtrade.main._CONF', default_conf)
+    exchange._API = Bittrex({'key': '', 'secret': ''})
+
+    # Download a 1 min ticker file
+    file1 = 'freqtrade/tests/testdata/BTC_XEL-1.json'
+    download_backtesting_testdata(pair = "BTC-XEL", interval = 1)
+    assert os.path.isfile(file1) is True
+
+    if os.path.isfile(file1):
+        os.remove(file1)
+
+    # Download a 5 min ticker file
+    file2 = 'freqtrade/tests/testdata/BTC_STORJ-5.json'
+    download_backtesting_testdata(pair = "BTC-STORJ", interval = 5)
+    assert os.path.isfile(file2) is True
+
+    if os.path.isfile(file2):
+        os.remove(file2)