- Beginning of writting of test_fit_sdm_desoto. Coverage around 90-95…

…% I think
pvlib · cwhanse · Oct 31, 2019 · Aug 21, 2019 · Aug 21, 2019 · Aug 22, 2019
commit 485dae6e92d0a3422c07deba2574d8969c711476
diff --git a/pvlib/test/test_ivtools.py b/pvlib/test/test_ivtools.py
@@ -28,6 +28,14 @@ def get_cec_params_cansol_cs5p_220p():
                        'R_sh_ref': 837.51, 'R_s': 1.004, 'Adjust': 2.3}}
 
 
+@pytest.fixture
+def get_test_specs_params():
+    """Specifications of module Kyocera KU270-6MCA"""
+    return {'celltype': 'polysi', 'v_mp': 31.0, 'i_mp': 8.71,
+            'v_oc': 38.3, 'i_sc': 9.43, 'alpha_sc': 0.06, 'beta_voc': -0.36,
+            'cells_in_series': 60}
+
+
 @requires_scipy
 def test_fit_sde_sandia(get_test_iv_params, get_bad_iv_curves):
     test_params = get_test_iv_params
@@ -102,6 +110,19 @@ def test_fit_sdm_cec_sam(get_cec_params_cansol_cs5p_220p):
                 cells_in_series=1, temp_ref=25)
 
 
+@requires_scipy
+def test_fit_sdm_desoto(get_test_specs_params):
+    result = pvlib.ivtools.fit_sdm_desoto(**get_test_specs_params)
+    result_expected = {'I_L_ref': 9.452306515003592,
+                       'I_o_ref': 3.244967717785086e-10,
+                       'a_ref': 1.59170284124638,
+                       'R_sh_ref': 125.85822206469133,
+                       'R_s': 0.2977156014170881,
+                       'alpha_sc': 0.005658}
+    assert np.allclose(pd.Series(result), pd.Series(result_expected),
+                       rtol=5e-2)
+
+
 @pytest.fixture
 def get_bad_iv_curves():
     # v1, i1 produces a bad value for I0_voc