Added tests for number of samples and point spacing when determining …

…the sample size

tests/test_sample_size.py

@@ -0,0 +1,31 @@
+import pytest
+
+from AcATaMa.core import config
+
+
+def test_get_n_calculates_correct_samples_simple(plugin, unwrap):
+    # restore
+    input_yml_path = pytest.tests_data_dir / "test_sample_size.yml"
+    config_restore = unwrap(config.restore)
+    config_restore(input_yml_path)
+    sampling_design = plugin.dockwidget.sampling_design_window
+
+    # set values
+    sampling_design.determine_number_samples_dialog_SimpRS.get_n()
+
+    assert sampling_design.determine_number_samples_dialog_SimpRS.NumberOfSamples.text() == "306"
+
+def test_point_spacing_calculates_correct_samples_systematic(plugin, unwrap, monkeypatch):
+    # restore
+    input_yml_path = pytest.tests_data_dir / "test_sample_size.yml"
+    config_restore = unwrap(config.restore)
+    config_restore(input_yml_path)
+    sampling_design = plugin.dockwidget.sampling_design_window
+
+    determine_number_samples_dialog = sampling_design.determine_number_samples_dialog_SystS
+
+    # Replace QDialog.exec_ to always return QDialog.Accepted
+    monkeypatch.setattr(determine_number_samples_dialog, "exec_", lambda: determine_number_samples_dialog.Accepted)
+    sampling_design.determine_number_samples_dialog_SystS.get_n()
+
+    assert sampling_design.PointSpacing_SystS.value() == 1028.9