test: added test for synaptic gains getter method

hnn_core/tests/test_network.py

@@ -895,8 +895,8 @@ def test_network_mesh():
     _ = law_2021_model(mesh_shape=mesh_shape)
 
 
-def test_synaptic_gains():
-    """Test synaptic gains update"""
+def test_set_synaptic_gains():
+    """Test synaptic gains setter"""
     net = jones_2009_model()
     nb_base = NetworkBuilder(net)
     e_cell_names = ['L2_pyramidal', 'L5_pyramidal']
@@ -963,6 +963,16 @@ def _get_weight(nb, conn_name, idx=0):
             _get_weight(nb_base, 'L2Pyr_L5Basket_ampa')) == 1
 
 
+def test_get_synaptic_gains():
+    """Test synaptic gains getter."""
+    net = jones_2009_model()
+    assert net.get_synaptic_gains() == {'e_e': 1.0, 'e_i': 1.0,
+                                        'i_e': 1.0, 'i_i': 1.0}
+    new_gains = {'e_e': 0.5, 'e_i': 1.5, 'i_e': 0.75, 'i_i': 1.0}
+    net.set_synaptic_gains(**new_gains)
+    assert net.get_synaptic_gains() == new_gains
+
+
 class TestPickConnection:
     """Tests for the pick_connection function."""
     @pytest.mark.parametrize("arg_name",