Full coverage for Keithley 2182 & 6220

Added and extended existing tests for these two instruments.

instruments/tests/test_keithley/test_keithley2182.py

@@ -34,6 +34,70 @@ def test_channel_mode():
     ) as inst:
         channel = inst.channel[0]
         assert channel.mode == inst.Mode.voltage_dc
+        with pytest.raises(NotImplementedError):
+            channel.mode = 42
+
+
+def test_channel_trigger_mode():
+    """Raise NotImplementedError when getting / setting trigger mode."""
+    with expected_protocol(
+            ik.keithley.Keithley2182,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        channel = inst.channel[0]
+        with pytest.raises(NotImplementedError):
+            _ = channel.trigger_mode
+        with pytest.raises(NotImplementedError):
+            channel.trigger_mode = 42
+
+
+def test_channel_relative():
+    """Raise NotImplementedError when getting / setting relative."""
+    with expected_protocol(
+            ik.keithley.Keithley2182,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        channel = inst.channel[0]
+        with pytest.raises(NotImplementedError):
+            _ = channel.relative
+        with pytest.raises(NotImplementedError):
+            channel.relative = 42
+
+
+def test_channel_input_range():
+    """Raise NotImplementedError when getting / setting input range."""
+    with expected_protocol(
+            ik.keithley.Keithley2182,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        channel = inst.channel[0]
+        with pytest.raises(NotImplementedError):
+            _ = channel.input_range
+        with pytest.raises(NotImplementedError):
+            channel.input_range = 42
+
+
+def test_channel_measure_mode_not_none():
+    """Raise NotImplementedError measuring with non-None mode."""
+    with expected_protocol(
+            ik.keithley.Keithley2182,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        channel = inst.channel[0]
+        with pytest.raises(NotImplementedError):
+            channel.measure(mode="Some Mode")
 
 
 def test_channel_measure_voltage():
@@ -225,3 +289,18 @@ def test_relative_set_wrong_type():
             []
     ) as inst:
         inst.relative = "derp"
+
+
+def test_input_range():
+    """Raise NotImplementedError when getting / setting input range."""
+    with expected_protocol(
+            ik.keithley.Keithley2182,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        with pytest.raises(NotImplementedError):
+            _ = inst.input_range
+        with pytest.raises(NotImplementedError):
+            inst.input_range = 42

instruments/tests/test_keithley/test_keithley6220.py

@@ -7,6 +7,8 @@
 # IMPORTS #####################################################################
 
 
+import pytest
+
 from instruments.units import ureg as u
 
 import instruments as ik
@@ -20,6 +22,27 @@ def test_channel():
     assert inst.channel[0] == inst
 
 
+def test_voltage():
+    """Raise NotImplementedError when getting / setting voltage."""
+    with expected_protocol(
+            ik.keithley.Keithley6220,
+            [
+            ],
+            [
+            ]
+    ) as inst:
+        with pytest.raises(NotImplementedError) as err_info:
+            _ = inst.voltage
+        err_msg = err_info.value.args[0]
+        assert err_msg == "The Keithley 6220 does not support voltage " \
+                          "settings."
+        with pytest.raises(NotImplementedError) as err_info:
+            inst.voltage = 42
+        err_msg = err_info.value.args[0]
+        assert err_msg == "The Keithley 6220 does not support voltage " \
+                          "settings."
+
+
 def test_current():
     with expected_protocol(
             ik.keithley.Keithley6220,