test: add tests for reading vignette parameters in ZemaxFileReader

tests/test_fileio.py

@@ -239,6 +239,36 @@ def test_read_surf_param(self, zemax_file_reader):
         val = zemax_file_reader._current_surf_data['param_0']
         assert val == 2
 
+    def test_read_vignette_decenter_x(self, zemax_file_reader):
+        data = ['VDXN', '1', '2']
+        zemax_file_reader._read_vignette_decenter_x(data)
+        val = zemax_file_reader.data['fields']['vignette_decenter_x']
+        assert val == [1, 2]
+
+    def test_read_vignette_decenter_y(self, zemax_file_reader):
+        data = ['VDYN', '1', '2']
+        zemax_file_reader._read_vignette_decenter_y(data)
+        val = zemax_file_reader.data['fields']['vignette_decenter_y']
+        assert val == [1, 2]
+
+    def test_read_vignette_compress_x(self, zemax_file_reader):
+        data = ['VCXN', '1', '2']
+        zemax_file_reader._read_vignette_compress_x(data)
+        val = zemax_file_reader.data['fields']['vignette_compress_x']
+        assert val == [1, 2]
+
+    def test_read_vignette_compress_y(self, zemax_file_reader):
+        data = ['VCYN', '1', '2']
+        zemax_file_reader._read_vignette_compress_y(data)
+        val = zemax_file_reader.data['fields']['vignette_compress_y']
+        assert val == [1, 2]
+
+    def test_read_vignette_tangent_angle(self, zemax_file_reader):
+        data = ['VANN', '1', '2']
+        zemax_file_reader._read_vignette_tangent_angle(data)
+        val = zemax_file_reader.data['fields']['vignette_tangent_angle']
+        assert val == [1, 2]
+
 
 class TestZemaxToOpticConverter:
     def test_generate_lens(self, zemax_file_reader):