Add unit tests

tests/data/config/py_base.py

@@ -0,0 +1,7 @@
+_base_ = ['./l1.py', './l2.yaml', './l3.json', './l4.py']
+item2 = dict(b=[5, 6])
+item3 = False
+item4 = 'test'
+item6[0] = dict(c=0)
+item8 = '{{fileBasename}}'
+item9, item10, item11 = item7['b']['c']

tests/data/config/py_nested_base.py

@@ -0,0 +1,10 @@
+_base_ = ['./py_base.py']
+item12 = item8
+item13 = item9
+item14 = item1
+item15 = dict(
+    a=dict(b=item2),
+    b=[item3],
+    c=[item4],
+    d=[[dict(e=item5['a'])], item6],
+    e=item1)

tests/test_utils/test_config.py

@@ -536,3 +536,59 @@ def test_deprecation():
         with pytest.warns(DeprecationWarning):
             cfg = Config.fromfile(cfg_file)
         assert cfg.item1 == 'expected'
+
+
+def test_py_base_variables():
+    file = 'py_base.py'
+    cfg_file = osp.join(data_path, f'config/{file}')
+    cfg = Config.fromfile(cfg_file)
+    assert isinstance(cfg, Config)
+    assert cfg.filename == cfg_file
+    # cfg.field
+    assert cfg.item1 == [1, 2]
+    assert cfg.item2.a == 0
+    assert cfg.item2.b == [5, 6]
+    assert cfg.item3 is False
+    assert cfg.item4 == 'test'
+    assert cfg.item5 == dict(a=0, b=1)
+    assert cfg.item6 == [dict(c=0), dict(b=1)]
+    assert cfg.item7 == dict(a=[0, 1, 2], b=dict(c=[3.1, 4.2, 5.3]))
+    assert cfg.item8 == file
+    assert cfg.item9 == 3.1
+    assert cfg.item10 == 4.2
+    assert cfg.item11 == 5.3
+
+    # test nested base
+    file = 'py_nested_base.py'
+    cfg_file = osp.join(data_path, f'config/{file}')
+    cfg = Config.fromfile(cfg_file)
+    assert isinstance(cfg, Config)
+    assert cfg.filename == cfg_file
+    # cfg.field
+    assert cfg.item1 == [1, 2]
+    assert cfg.item2.a == 0
+    assert cfg.item2.b == [5, 6]
+    assert cfg.item3 is False
+    assert cfg.item4 == 'test'
+    assert cfg.item5 == dict(a=0, b=1)
+    assert cfg.item6 == [dict(c=0), dict(b=1)]
+    assert cfg.item7 == dict(a=[0, 1, 2], b=dict(c=[3.1, 4.2, 5.3]))
+    assert cfg.item8 == 'py_base.py'
+    assert cfg.item9 == 3.1
+    assert cfg.item10 == 4.2
+    assert cfg.item11 == 5.3
+    assert cfg.item12 == 'py_base.py'
+    assert cfg.item13 == 3.1
+    assert cfg.item14 == [1, 2]
+    assert cfg.item15 == dict(
+        a=dict(b=dict(a=0, b=[5, 6])),
+        b=[False],
+        c=['test'],
+        d=[[{
+            'e': 0
+        }], [{
+            'c': 0
+        }, {
+            'b': 1
+        }]],
+        e=[1, 2])