Added tests.

pyMFD/tests/test_FV.py

+import pytest
+from pyMFD.FV import FV
+
+
+def test_FV():
+    spm_file  = "data/examples/02041411.001" 
+    fv        = FV(spm_file)
+    (comp, _) = fv.summarize()
+    px_size   = fv.get_pixel_size()
+
+    assert fv.tm_defl.shape == (1024, 2, 4096)
+    assert comp.shape       == (64, 64)
+    assert px_size          == pytest.approx(2.34375e-07)
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pyMFD/tests/test_nanoscope.py

+import pytest
+import struct
+from pyMFD.nanoscope import get_fv_data, get_params, save_txt_data
+
+### get_fv_data ###
+# Tests get_fv_data, read_fv_data, convert_fv_data, get_params, read_fv_header, and convert_params
+
+def test_get_fv_data():
+    filename = "data/examples/02041411.001"
+    params   = get_params(filename)
+    data     = get_fv_data(filename, params)
+    assert data is not None and params is not None
+
+def test_get_fv_data_not_exist():
+    with pytest.raises(FileNotFoundError) as e_info:
+        filename = "data/examples/02041411.001"
+        params   = get_params(filename)
+        data     = get_fv_data("this_file_should_not_exist.fn238ty0asd9", params)
+
+def test_get_fv_data_bad_filetype():
+    with pytest.raises(struct.error) as e_info:
+        filename = "data/examples/02041411.001"
+        params   = get_params(filename)
+        data     = get_fv_data("data/examples/02041411.001.json", params)
+

pyMFD/tests/test_scan_params.py

+from pyMFD.scan_params import get_scan_params
+import os
+
+def test_get_scan_params():
+    '''Test loading scan parameters from JSON.'''
+    sc_params = get_scan_params("data/examples/02041411.001.json")
+    
+    assert "name" in sc_params
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