Extract testable code and add test.

.github/workflows/pyleco_extras_CI.yml

@@ -29,6 +29,7 @@ jobs:
       - name: Lint with ruff
         uses: chartboost/ruff-action@v1
         with:
+          version: 0.4.10  # ruff-action@v1 is broken in regard to ruff 0.5.0
           args: --extend-select=E9,F63,F7,F82 --show-source
       # - uses: ammaraskar/sphinx-problem-matcher@master
       # - name: Generate docs

pyleco_extras/gui/data_logger/data_logger_base.py

@@ -277,9 +277,10 @@ def get_configuration(self) -> dict[str, Any]:
         config.update(self.get_gui_configuration())
         return config
 
-    def _read_variables_and_units(self) -> None:
-        var_text = self.teVariables.toPlainText().replace(": ", ":").replace(",", " ")
-        raw_vars = var_text.split()
+    @staticmethod
+    def _interpret_variables_and_units_text(var_text: str) -> tuple[list[str], dict[str, str]]:
+        sanitized_text = var_text.replace(": ", ":").replace(",", " ")
+        raw_vars = sanitized_text.split()
         last_name = ""
         variables = []
         units = {}
@@ -297,8 +298,11 @@ def _read_variables_and_units(self) -> None:
             if u is not None:
                 units[v] = u
             variables.append(v)
-        self._variables = variables
-        self._units = units
+        return variables, units
+
+    def _read_variables_and_units(self) -> None:
+        var_text = self.teVariables.toPlainText()
+        self._variables, self._units = self._interpret_variables_and_units_text(var_text=var_text)
 
     def _update_variables_and_units(self) -> None:
         """Update the line with variables and units."""
@@ -342,13 +346,12 @@ def trigger_type(self) -> TriggerTypes:
 
     @trigger_type.setter
     def trigger_type(self, value: TriggerTypes | str) -> None:
-        match value:
-            case TriggerTypes.NONE:
-                self.actionPause.setChecked(True)
-            case TriggerTypes.TIMER:
-                self.cbTimer.setChecked(True)
-            case TriggerTypes.VARIABLE:
-                self.cbTrigger.setChecked(True)
+        if value == TriggerTypes.NONE:
+            self.actionPause.setChecked(True)
+        elif value == TriggerTypes.TIMER:
+            self.cbTimer.setChecked(True)
+        elif value == TriggerTypes.VARIABLE:
+            self.cbTrigger.setChecked(True)
 
     @property
     def trigger_timeout(self) -> float:
@@ -397,7 +400,8 @@ def set_configuration(self, configuration: dict[str, Any]) -> None:
         """Set measurement configuration according to the dict `configuration`."""
         self._set_config(**configuration)
 
-    def read_legacy_units(self, text: str) -> dict[str, str]:
+    @staticmethod
+    def read_legacy_units(text: str) -> dict[str, str]:
         """Interpreting the old units text and returning a corresponding dict."""
         units = {}
         for element in text.split(","):

tests/gui/data_logger/test_data_logger_base.py

@@ -37,3 +37,19 @@ def test_get_y(self, data_logger: DataLoggerBase):
 
 def test_get_data_keys(data_logger: DataLoggerBase):
     assert list(data_logger.get_data_keys()) == ["x", "y"]
+
+
+@pytest.mark.parametrize(
+    "text, vars, units",
+    (
+        ("time:s, random", ["time", "random"], {"time": "s"}),
+        (
+            "time:s,\nSERVER.pub.var, .var2: W",
+            ["time", "SERVER.pub.var", "SERVER.pub.var2"],
+            {"time": "s", "SERVER.pub.var2": "W"},
+        ),
+        ("abc, .def", ["abc", ".def"], {}),
+    ),
+)
+def test_interpret_variables_text(text, vars, units):
+    assert DataLoggerBase._interpret_variables_and_units_text(text) == (vars, units)