add

ccxt/test/base/test_extend.py

@@ -0,0 +1,82 @@
+import os
+import sys
+
+root = 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 ccxt  # noqa: F402
+
+def test_extend():
+    exchange = ccxt.Exchange({
+        'id': 'regirock',
+    })
+    obj1 = {
+        'a': 1,
+        'b': [1, 2],
+        'c': [{
+    'test1': 1,
+    'test2': 1,
+}],
+        'd': None,
+        'e': 'not_undefined',
+        'sub': {
+            'a': 1,
+            'b': [1, 2],
+            'c': [{
+    'test1': 1,
+    'test2': 2,
+}],
+            'd': None,
+            'e': 'not_undefined',
+            'other1': 'x',
+        },
+        'other1': 'x',
+    }
+    obj2 = {
+        'a': 2,
+        'b': [3, 4],
+        'c': [{
+    'test1': 2,
+    'test3': 3,
+}],
+        'd': 'not_undefined',
+        'e': None,
+        'sub': {
+            'a': 2,
+            'b': [3, 4],
+            'c': [{
+    'test1': 2,
+    'test3': 3,
+}],
+            'd': 'not_undefined',
+            'e': None,
+            'other2': 'y',
+        },
+        'other2': 'y',
+    }
+    # extend
+    extended = exchange.extend(obj1, obj2)
+    tbfe_check_extended(extended, True)
+
+
+def tbfe_check_extended(extended, has_sub):
+    assert extended['a'] == 2
+    assert extended['b'][0] == 3
+    assert extended['b'][1] == 4
+    assert extended['c'][0]['test1'] == 2
+    assert not ('test2' in extended['c'][0])
+    assert extended['c'][0]['test3'] == 3
+    assert extended['d'] == 'not_undefined'
+    assert extended['e'] is None
+    assert extended['other1'] == 'x'
+    assert extended['other2'] == 'y'
+    if has_sub:
+        assert 'sub' in extended