oops

tests/test_lint.py

@@ -483,6 +483,29 @@ def test_check_parameter_df():
         lint.check_parameter_df(df=parameter_df)
 
 
+def test_check_observable_df():
+    """Check that we correctly detect errors in observable table"""
+
+    observable_df = pd.DataFrame(data={
+        OBSERVABLE_ID: ['obs1', 'obs2'],
+        OBSERVABLE_FORMULA: ['x1', 'x2'],
+        NOISE_FORMULA: ['sigma1', 'sigma2']
+    }).set_index(OBSERVABLE_ID)
+
+    lint.check_observable_df(observable_df)
+
+    # Check that duplicated observables ids are detected
+    bad_observable_df = observable_df.copy()
+    bad_observable_df.index = ['obs1', 'obs1']
+    with pytest.raises(AssertionError):
+        lint.check_observable_df(bad_observable_df)
+
+    # Check that missing noiseFormula is detected
+    bad_observable_df = observable_df.copy()
+    bad_observable_df.loc['obs1', NOISE_FORMULA] = nan
+    with pytest.raises(AssertionError):
+        lint.check_observable_df(bad_observable_df)
+
 
 def test_condition_ids_are_unique():
     condition_df = pd.DataFrame(data={