moved tests to atmosphere.py tests

Author: Kurt Rhee

pvlib/tests/conftest.py

@@ -477,18 +477,18 @@ def sapm_module_params():
 
 
 @pytest.fixture(scope='function')
-def spectrum_temperature():
+def tdew_rh_conversion_temperature():
     temperature = pd.Series([20.0, 25.0, 30.0, 15.0, 10.0])
     return temperature
 
 
 @pytest.fixture(scope='function')
-def spectrum_dewpoint():
+def tdew_rh_conversion_dewpoint():
     dewpoint = pd.Series([15.0, 20.0, 25.0, 12.0, 8.0])
     return dewpoint
 
 @pytest.fixture(scope='function')
-def spectrum_relative_humidity():
+def tdew_rh_conversion_relative_humidity():
     relative_humidity = pd.Series([
         72.938767, 73.802512, 74.628205, 82.261353, 87.383237
     ])

pvlib/tests/spectrum/test_magnus_tetens.py

@@ -87,6 +87,43 @@ def test_gueymard94_pw():
 
     assert_allclose(pws, expected, atol=0.01)
 
+# Unit tests
+def test_rh_from_tdew(
+    tdew_rh_conversion_temperature, tdew_rh_conversion_dewpoint,
+    tdew_rh_conversion_relative_humidity
+):
+
+    # Calculate relative humidity
+    rh = atmosphere.rh_from_tdew(
+        temperature=tdew_rh_conversion_temperature,
+        dewpoint=tdew_rh_conversion_dewpoint
+    )
+
+    # test
+    pd.testing.assert_series_equal(
+        rh,
+        tdew_rh_conversion_relative_humidity,
+        check_names=False
+    )
+
+
+# Unit tests
+def test_tdew_from_rh(
+    tdew_rh_conversion_temperature, tdew_rh_conversion_dewpoint,
+    tdew_rh_conversion_relative_humidity
+):
+
+    # Calculate relative humidity
+    dewpoint = atmosphere.tdew_from_rh(
+        temperature=tdew_rh_conversion_temperature,
+        relative_humidity=tdew_rh_conversion_relative_humidity
+    )
+
+    # test
+    pd.testing.assert_series_equal(
+        dewpoint, spectrum_dewpoint, check_names=False
+    )
+
 
 def test_first_solar_spectral_correction_deprecated():
     with pytest.warns(pvlibDeprecationWarning,