3 files changed, 28 insertions, 5 deletions
diff --git a/lab_control/frequency_response.py b/lab_control/frequency_response.py
index 8d46689..af78840 100644
--- a/lab_control/frequency_response.py
+++ b/lab_control/frequency_response.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from lab_control.function_generator import FunctionGenerator
 from lab_control.oscilloscope import Oscilloscope
 from lab_control.measurement import Measurement, getLinearRange
@@ -23,5 +25,9 @@ class FrequencyResponseMeasurement(Measurement):
 
         self.measurementDone = True
 
-    def saveToCSV(self, path: str) -> None:
-        pass
+    def dumpToCSV(self, path: Path) -> None:
+        with open(path, "w") as f:
+            f.write("Frequency (Hz),Amplitude (V)")
+
+            for entry in self.data:
+                f.write(f"\n{entry[0]},{entry[1]}")
diff --git a/lab_control/measurement.py b/lab_control/measurement.py
index eca228d..18a933c 100644
--- a/lab_control/measurement.py
+++ b/lab_control/measurement.py
@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from lab_control.function_generator import FunctionGenerator
 from lab_control.oscilloscope import Oscilloscope
 
@@ -11,5 +13,5 @@ class Measurement:
     def measure(self, osc: Oscilloscope, fg: FunctionGenerator) -> None:
         pass
 
-    def saveToCSV(self, path: str) -> None:
+    def dumpToCSV(self, path: Path) -> None:
         pass
diff --git a/lab_control/test/frequency_response_test.py b/lab_control/test/frequency_response_test.py
index 014b4f6..ad47d53 100644
--- a/lab_control/test/frequency_response_test.py
+++ b/lab_control/test/frequency_response_test.py
@@ -37,7 +37,7 @@ def test_frequencyResponseDefaults(uut):
     assert uut.functionGeneratorChannel == 1
     assert uut.oscilloscopeChannel == 1
 
-def test_frequencyResponseRamp(mockLab, uut):
+def test_frequencyResponseRamp(uut, mockLab):
     uut.minFrequency = 100.0
     uut.maxFrequency = 200.0
     uut.steps = 11
@@ -49,8 +49,23 @@ def test_frequencyResponseRamp(mockLab, uut):
     assert not uut.measurementDone
     assert uut.data == None
     
-    response = uut.measure(mockLab, mockLab)
+    uut.measure(mockLab, mockLab)
 
     assert uut.measurementDone
     assert uut.data == expectedData
 
+def test_dumpToCSV(uut, mockLab, tmp_path):
+    uut.minFrequency = 10.0
+    uut.maxFrequency = 30.0
+    uut.steps = 5
+
+    expectedData = prepareRampResponse(uut, mockLab)
+    uut.measure(mockLab, mockLab)
+
+    csv = tmp_path / "data.csv"
+    uut.dumpToCSV(csv)
+    savedData = csv.read_text().split("\n")
+
+    assert savedData[0] == "Frequency (Hz),Amplitude (V)"
+    for i, l in enumerate(savedData[1:]):
+        assert l == f"{expectedData[i][0]},{expectedData[i][1]}"