tests + automated testing with CI

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.12", "3.13"]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install uv and set the python version
+        uses: astral-sh/setup-uv@v5
+        with:
+          version: "0.5.16"
+          python-version: ${{ matrix.python-version }}
+      - name: Install the project
+        run: uv sync
+      - name: Run tests
+        run: uv run pytest tests

.gitignore

@@ -6,4 +6,7 @@
 *.venv
 logs_tensorboard
 *.hdf5
-*.lock
+*.lock
+.python-version
+.DS_Store
+.idea

PtyLab/ExperimentalData/ExperimentalData.py

@@ -98,6 +98,22 @@ def loadData(self, filename=None):
         """
         import os
 
+        if str(filename) == "test:nodata":
+            self.filename = filename
+            # Set minimal stub data so the object is usable without a file
+            self.ptychogram = np.zeros((1, 16, 16), dtype=np.float32)
+            self.encoder = np.zeros((1, 2), dtype=np.float64)
+            self.wavelength = 500e-9
+            self.dxd = 6.5e-6
+            self.zo = 0.1
+            # optional fields
+            self.entrancePupilDiameter = None
+            self.spectralDensity = None
+            self.theta = None
+            self.emptyBeam = None
+            self._setData()
+            return
+
         if not os.path.exists(filename) and str(filename).startswith("example:"):
             self.filename = filename
             from PtyLab.io.readExample import examplePath